Prepare the v0.14.1 release

This commit changes how params starting with __ are viewed as positional only params

AUTHORS.txt

@@ -51,5 +51,6 @@ Maksim Novikov (@m-novikov) <mnovikov.work@gmail.com>
 Tobias Rzepka (@TobiasRzepka)
 micbou (@micbou)
 Dima Gerasimov (@karlicoss) <karlicoss@gmail.com>
+Max Woerner Chase (@mwchase) <max.chase@gmail.com>
 
 Note: (@user) means a github user name.

CHANGELOG.rst

@@ -3,6 +3,12 @@
 Changelog
 ---------
 
+0.14.1 (2019-07-13)
++++++++++++++++++++
+
+- CallSignature.index should now be working a lot better
+- A couple of smaller bugfixes
+
 0.14.0 (2019-06-20)
 +++++++++++++++++++
 

README.rst

@@ -203,7 +203,7 @@ Acknowledgements
 
 
 .. _jedi-vim: https://github.com/davidhalter/jedi-vim
-.. _youcompleteme: https://valloric.github.io/YouCompleteMe/
+.. _youcompleteme: https://github.com/ycm-core/YouCompleteMe
 .. _deoplete-jedi: https://github.com/zchee/deoplete-jedi
 .. _completor.vim: https://github.com/maralla/completor.vim
 .. _Jedi.el: https://github.com/tkf/emacs-jedi

conftest.py

@@ -105,6 +105,11 @@ def Script(environment):
     return partial(jedi.Script, environment=environment)
 
 
+@pytest.fixture(scope='session')
+def names(environment):
+    return partial(jedi.names, environment=environment)
+
+
 @pytest.fixture(scope='session')
 def has_typing(environment):
     if environment.version_info >= (3, 5, 0):
@@ -127,3 +132,11 @@ def skip_python2(environment):
         # This if is just needed to avoid that tests ever skip way more than
         # they should for all Python versions.
         pytest.skip()
+
+
+@pytest.fixture()
+def skip_pre_python38(environment):
+    if environment.version_info < (3, 8):
+        # This if is just needed to avoid that tests ever skip way more than
+        # they should for all Python versions.
+        pytest.skip()

jedi/__init__.py

@@ -33,7 +33,7 @@ As you see Jedi is pretty simple and allows you to concentrate on writing a
 good text editor, while still having very good IDE features for Python.
 """
 
-__version__ = '0.14.0'
+__version__ = '0.14.1'
 
 from jedi.api import Script, Interpreter, set_debug_function, \
     preload_module, names

jedi/_compatibility.py

@@ -361,9 +361,9 @@ except NameError:
     FileNotFoundError = IOError
 
 try:
-    NotADirectoryError = NotADirectoryError
+    IsADirectoryError = IsADirectoryError
 except NameError:
-    NotADirectoryError = IOError
+    IsADirectoryError = IOError
 
 try:
     PermissionError = PermissionError

jedi/api/__init__.py

@@ -365,19 +365,18 @@ class Script(object):
 
         :rtype: list of :class:`classes.CallSignature`
         """
-        call_signature_details = \
-            helpers.get_call_signature_details(self._module_node, self._pos)
-        if call_signature_details is None:
+        call_details = helpers.get_call_signature_details(self._module_node, self._pos)
+        if call_details is None:
             return []
 
         context = self._evaluator.create_context(
             self._get_module(),
-            call_signature_details.bracket_leaf
+            call_details.bracket_leaf
         )
         definitions = helpers.cache_call_signatures(
             self._evaluator,
             context,
-            call_signature_details.bracket_leaf,
+            call_details.bracket_leaf,
             self._code_lines,
             self._pos
         )
@@ -385,10 +384,7 @@ class Script(object):
 
         # TODO here we use stubs instead of the actual contexts. We should use
         # the signatures from stubs, but the actual contexts, probably?!
-        return [classes.CallSignature(self._evaluator, signature,
-                                      call_signature_details.bracket_leaf.start_pos,
-                                      call_signature_details.call_index,
-                                      call_signature_details.keyword_name_str)
+        return [classes.CallSignature(self._evaluator, signature, call_details)
                 for signature in definitions.get_signatures()]
 
     def _analysis(self):

jedi/api/classes.py

@@ -358,9 +358,10 @@ class BaseDefinition(object):
         return Definition(self._evaluator, context.name)
 
     def __repr__(self):
-        return "<%s full_name=%r, description=%r>" % (
+        return "<%s %sname=%r, description=%r>" % (
             self.__class__.__name__,
-            self.full_name,
+            'full_' if self.full_name else '',
+            self.full_name or self.name,
             self.description,
         )
 
@@ -529,17 +530,13 @@ class Definition(BaseDefinition):
         """
         typ = self.type
         tree_name = self._name.tree_name
+        if typ == 'param':
+            return typ + ' ' + self._name.to_string()
         if typ in ('function', 'class', 'module', 'instance') or tree_name is None:
             if typ == 'function':
                 # For the description we want a short and a pythonic way.
                 typ = 'def'
             return typ + ' ' + self._name.string_name
-        elif typ == 'param':
-            code = search_ancestor(tree_name, 'param').get_code(
-                include_prefix=False,
-                include_comma=False
-            )
-            return typ + ' ' + code
 
         definition = tree_name.get_definition() or tree_name
         # Remove the prefix, because that's not what we want for get_code
@@ -607,11 +604,9 @@ class CallSignature(Definition):
     It knows what functions you are currently in. e.g. `isinstance(` would
     return the `isinstance` function. without `(` it would return nothing.
     """
-    def __init__(self, evaluator, signature, bracket_start_pos, index, key_name_str):
+    def __init__(self, evaluator, signature, call_details):
         super(CallSignature, self).__init__(evaluator, signature.name)
-        self._index = index
-        self._key_name_str = key_name_str
-        self._bracket_start_pos = bracket_start_pos
+        self._call_details = call_details
         self._signature = signature
 
     @property
@@ -620,26 +615,7 @@ class CallSignature(Definition):
         The Param index of the current call.
         Returns None if the index cannot be found in the curent call.
         """
-        if self._key_name_str is not None:
-            for i, param in enumerate(self.params):
-                if self._key_name_str == param.name:
-                    return i
-            if self.params:
-                param_name = self.params[-1]._name
-                if param_name.tree_name is not None:
-                    if param_name.tree_name.get_definition().star_count == 2:
-                        return i
-            return None
-
-        if self._index >= len(self.params):
-            for i, param in enumerate(self.params):
-                tree_name = param._name.tree_name
-                if tree_name is not None:
-                    # *args case
-                    if tree_name.get_definition().star_count == 1:
-                        return i
-            return None
-        return self._index
+        return self._call_details.calculate_index(self._signature.get_param_names())
 
     @property
     def params(self):
@@ -651,7 +627,7 @@ class CallSignature(Definition):
         The indent of the bracket that is responsible for the last function
         call.
         """
-        return self._bracket_start_pos
+        return self._call_details.bracket_leaf.start_pos
 
     @property
     def _params_str(self):
@@ -662,7 +638,7 @@ class CallSignature(Definition):
         return '<%s: %s index=%r params=[%s]>' % (
             type(self).__name__,
             self._name.string_name,
-            self._index,
+            self.index,
             self._params_str,
         )
 

jedi/api/completion.py

@@ -171,7 +171,10 @@ class Completion:
                         elif type_ == 'for_stmt':
                             allowed_transitions.append('else')
 
-        completion_names = list(self._get_keyword_completion_names(allowed_transitions))
+        completion_names = []
+        current_line = self._code_lines[self._position[0] - 1][:self._position[1]]
+        if not current_line or current_line[-1] in ' \t.;':
+            completion_names += self._get_keyword_completion_names(allowed_transitions)
 
         if any(t in allowed_transitions for t in (PythonTokenTypes.NAME,
                                                   PythonTokenTypes.INDENT)):

jedi/api/helpers.py

@@ -8,7 +8,7 @@ from textwrap import dedent
 from parso.python.parser import Parser
 from parso.python import tree
 
-from jedi._compatibility import u
+from jedi._compatibility import u, Parameter
 from jedi.evaluate.base_context import NO_CONTEXTS
 from jedi.evaluate.syntax_tree import eval_atom
 from jedi.evaluate.helpers import evaluate_call_of_leaf
@@ -159,10 +159,139 @@ def evaluate_goto_definition(evaluator, context, leaf):
     return definitions
 
 
-CallSignatureDetails = namedtuple(
-    'CallSignatureDetails',
+class CallDetails(object):
+    def __init__(self, bracket_leaf, children, position):
         ['bracket_leaf', 'call_index', 'keyword_name_str']
-)
+        self.bracket_leaf = bracket_leaf
+        self._children = children
+        self._position = position
+
+    @property
+    def index(self):
+        return _get_index_and_key(self._children, self._position)[0]
+
+    @property
+    def keyword_name_str(self):
+        return _get_index_and_key(self._children, self._position)[1]
+
+    def calculate_index(self, param_names):
+        positional_count = 0
+        used_names = set()
+        star_count = -1
+        args = list(_iter_arguments(self._children, self._position))
+        if not args:
+            if param_names:
+                return 0
+            else:
+                return None
+
+        is_kwarg = False
+        for i, (star_count, key_start, had_equal) in enumerate(args):
+            is_kwarg |= had_equal | (star_count == 2)
+            if star_count:
+                pass  # For now do nothing, we don't know what's in there here.
+            else:
+                if i + 1 != len(args):  # Not last
+                    if had_equal:
+                        used_names.add(key_start)
+                    else:
+                        positional_count += 1
+
+        for i, param_name in enumerate(param_names):
+            kind = param_name.get_kind()
+
+            if not is_kwarg:
+                if kind == Parameter.VAR_POSITIONAL:
+                    return i
+                if kind in (Parameter.POSITIONAL_OR_KEYWORD, Parameter.POSITIONAL_ONLY):
+                    if i == positional_count:
+                        return i
+
+            if key_start is not None and not star_count == 1 or star_count == 2:
+                if param_name.string_name not in used_names \
+                        and (kind == Parameter.KEYWORD_ONLY
+                             or kind == Parameter.POSITIONAL_OR_KEYWORD
+                             and positional_count <= i):
+                    if star_count:
+                        return i
+                    if had_equal:
+                        if param_name.string_name == key_start:
+                            return i
+                    else:
+                        if param_name.string_name.startswith(key_start):
+                            return i
+
+                if kind == Parameter.VAR_KEYWORD:
+                    return i
+        return None
+
+
+def _iter_arguments(nodes, position):
+    def remove_after_pos(name):
+        if name.type != 'name':
+            return None
+        return name.value[:position[1] - name.start_pos[1]]
+
+    # Returns Generator[Tuple[star_count, Optional[key_start: str], had_equal]]
+    nodes_before = [c for c in nodes if c.start_pos < position]
+    if nodes_before[-1].type == 'arglist':
+        for x in _iter_arguments(nodes_before[-1].children, position):
+            yield x  # Python 2 :(
+        return
+
+    previous_node_yielded = False
+    stars_seen = 0
+    for i, node in enumerate(nodes_before):
+        if node.type == 'argument':
+            previous_node_yielded = True
+            first = node.children[0]
+            second = node.children[1]
+            if second == '=':
+                if second.start_pos < position:
+                    yield 0, first.value, True
+                else:
+                    yield 0, remove_after_pos(first), False
+            elif first in ('*', '**'):
+                yield len(first.value), remove_after_pos(second), False
+            else:
+                # Must be a Comprehension
+                first_leaf = node.get_first_leaf()
+                if first_leaf.type == 'name' and first_leaf.start_pos >= position:
+                    yield 0, remove_after_pos(first_leaf), False
+                else:
+                    yield 0, None, False
+            stars_seen = 0
+        elif node.type in ('testlist', 'testlist_star_expr'):  # testlist is Python 2
+            for n in node.children[::2]:
+                if n.type == 'star_expr':
+                    stars_seen = 1
+                    n = n.children[1]
+                yield stars_seen, remove_after_pos(n), False
+                stars_seen = 0
+            # The count of children is even if there's a comma at the end.
+            previous_node_yielded = bool(len(node.children) % 2)
+        elif isinstance(node, tree.PythonLeaf) and node.value == ',':
+            if not previous_node_yielded:
+                yield stars_seen, '', False
+                stars_seen = 0
+            previous_node_yielded = False
+        elif isinstance(node, tree.PythonLeaf) and node.value in ('*', '**'):
+            stars_seen = len(node.value)
+        elif node == '=' and nodes_before[-1]:
+            previous_node_yielded = True
+            before = nodes_before[i - 1]
+            if before.type == 'name':
+                yield 0, before.value, True
+            else:
+                yield 0, None, False
+            # Just ignore the star that is probably a syntax error.
+            stars_seen = 0
+
+    if not previous_node_yielded:
+        if nodes_before[-1].type == 'name':
+            yield stars_seen, remove_after_pos(nodes_before[-1]), False
+        else:
+            yield stars_seen, '', False
 
 
 def _get_index_and_key(nodes, position):
@@ -171,11 +300,10 @@ def _get_index_and_key(nodes, position):
     """
     nodes_before = [c for c in nodes if c.start_pos < position]
     if nodes_before[-1].type == 'arglist':
-        nodes_before = [c for c in nodes_before[-1].children if c.start_pos < position]
+        return _get_index_and_key(nodes_before[-1].children, position)
 
     key_str = None
 
-    if nodes_before:
     last = nodes_before[-1]
     if last.type == 'argument' and last.children[1] == '=' \
             and last.children[1].end_pos <= position:
@@ -187,7 +315,7 @@ def _get_index_and_key(nodes, position):
     return nodes_before.count(','), key_str
 
 
-def _get_call_signature_details_from_error_node(node, position):
+def _get_call_signature_details_from_error_node(node, additional_children, position):
     for index, element in reversed(list(enumerate(node.children))):
         # `index > 0` means that it's a trailer and not an atom.
         if element == '(' and element.end_pos <= position and index > 0:
@@ -198,10 +326,7 @@ def _get_call_signature_details_from_error_node(node, position):
             if name is None:
                 continue
             if name.type == 'name' or name.parent.type in ('trailer', 'atom'):
-                return CallSignatureDetails(
-                    element,
-                    *_get_index_and_key(children, position)
-                )
+                return CallDetails(element, children + additional_children, position)
 
 
 def get_call_signature_details(module, position):
@@ -213,6 +338,7 @@ def get_call_signature_details(module, position):
             return None
 
     if leaf == ')':
+        # TODO is this ok?
         if leaf.end_pos == position:
             leaf = leaf.get_next_leaf()
 
@@ -225,18 +351,25 @@ def get_call_signature_details(module, position):
             # makes it feel strange to have a call signature.
             return None
 
-        for n in node.children[::-1]:
-            if n.start_pos < position and n.type == 'error_node':
-                result = _get_call_signature_details_from_error_node(n, position)
+        additional_children = []
+        for n in reversed(node.children):
+            if n.start_pos < position:
+                if n.type == 'error_node':
+                    result = _get_call_signature_details_from_error_node(
+                        n, additional_children, position
+                    )
                     if result is not None:
                         return result
 
+                    additional_children[0:0] = n.children
+                    continue
+                additional_children.insert(0, n)
+
         if node.type == 'trailer' and node.children[0] == '(':
             leaf = node.get_previous_leaf()
             if leaf is None:
                 return None
-            return CallSignatureDetails(
-                node.children[0], *_get_index_and_key(node.children, position))
+            return CallDetails(node.children[0], node.children, position)
 
         node = node.parent
 

jedi/api/project.py

@@ -1,7 +1,7 @@
 import os
 import json
 
-from jedi._compatibility import FileNotFoundError, NotADirectoryError, PermissionError
+from jedi._compatibility import FileNotFoundError, PermissionError, IsADirectoryError
 from jedi.api.environment import SameEnvironment, \
     get_cached_default_environment
 from jedi.api.exceptions import WrongVersion
@@ -153,7 +153,7 @@ def _is_django_path(directory):
     try:
         with open(os.path.join(directory, 'manage.py'), 'rb') as f:
             return b"DJANGO_SETTINGS_MODULE" in f.read()
-    except (FileNotFoundError, NotADirectoryError, PermissionError):
+    except (FileNotFoundError, IsADirectoryError, PermissionError):
         return False
 
     return False
@@ -169,7 +169,7 @@ def get_default_project(path=None):
     for dir in traverse_parents(check, include_current=True):
         try:
             return Project.load(dir)
-        except (FileNotFoundError, NotADirectoryError, PermissionError):
+        except (FileNotFoundError, IsADirectoryError, PermissionError):
             pass
 
         if first_no_init_file is None:

jedi/evaluate/__init__.py

@@ -318,11 +318,11 @@ class Evaluator(object):
                     return [TreeNameDefinition(context, name)]
             elif type_ == 'param':
                 return [ParamName(context, name)]
-            elif type_ in ('funcdef', 'classdef'):
-                return [TreeNameDefinition(context, name)]
             elif type_ in ('import_from', 'import_name'):
                 module_names = imports.infer_import(context, name, is_goto=True)
                 return module_names
+            else:
+                return [TreeNameDefinition(context, name)]
         else:
             contexts = self._follow_error_node_imports_if_possible(context, name)
             if contexts is not None:

jedi/evaluate/base_context.py

@@ -241,7 +241,7 @@ class _ContextWrapperBase(HelperContextMixin):
         return cls(*args, **kwargs)
 
     def __getattr__(self, name):
-        assert name != '_wrapped_context'
+        assert name != '_wrapped_context', 'Problem with _get_wrapped_context'
         return getattr(self._wrapped_context, name)
 
 

jedi/evaluate/compiled/access.py

@@ -412,7 +412,7 @@ class DirectObjectAccess(object):
                 name=p.name,
                 has_default=p.default is not p.empty,
                 default=self._create_access_path(p.default),
-                default_string=str(p.default),
+                default_string=repr(p.default),
                 has_annotation=p.annotation is not p.empty,
                 annotation=self._create_access_path(p.annotation),
                 annotation_string=str(p.default),
@@ -448,6 +448,17 @@ class DirectObjectAccess(object):
             # the signature. In that case we just want a simple escape for now.
             raise ValueError
 
+    def get_return_annotation(self):
+        try:
+            o = self._obj.__annotations__.get('return')
+        except AttributeError:
+            return None
+
+        if o is None:
+            return None
+
+        return self._create_access_path(o)
+
     def negate(self):
         return self._create_access_path(-self._obj)
 

jedi/evaluate/compiled/context.py

@@ -46,6 +46,11 @@ class CompiledObject(Context):
         self.access_handle = access_handle
 
     def py__call__(self, arguments):
+        return_annotation = self.access_handle.get_return_annotation()
+        if return_annotation is not None:
+            # TODO the return annotation may also be a string.
+            return create_from_access_path(self.evaluator, return_annotation).execute_annotation()
+
         try:
             self.access_handle.getattr_paths(u'__call__')
         except AttributeError:
@@ -122,6 +127,9 @@ class CompiledObject(Context):
             signature_params = self.access_handle.get_signature_params()
         except ValueError:  # Has no signature
             params_str, ret = self._parse_function_doc()
+            if not params_str:
+                tokens = []
+            else:
                 tokens = params_str.split(',')
             if self.access_handle.ismethoddescriptor():
                 tokens.insert(0, 'self')
@@ -276,7 +284,11 @@ class CompiledName(AbstractNameDefinition):
 
     @property
     def api_type(self):
-        return next(iter(self.infer())).api_type
+        api = self.infer()
+        # If we can't find the type, assume it is an instance variable
+        if not api:
+            return "instance"
+        return next(iter(api)).api_type
 
     @underscore_memoization
     def infer(self):
@@ -285,9 +297,7 @@ class CompiledName(AbstractNameDefinition):
         )])
 
 
-class SignatureParamName(AbstractNameDefinition, ParamNameInterface):
-    api_type = u'param'
-
+class SignatureParamName(ParamNameInterface, AbstractNameDefinition):
     def __init__(self, compiled_obj, signature_param):
         self.parent_context = compiled_obj.parent_context
         self._signature_param = signature_param
@@ -297,7 +307,7 @@ class SignatureParamName(AbstractNameDefinition, ParamNameInterface):
         return self._signature_param.name
 
     def to_string(self):
-        s = self.string_name
+        s = self._kind_string() + self.string_name
         if self._signature_param.has_annotation:
             s += ': ' + self._signature_param.annotation_string
         if self._signature_param.has_default:
@@ -322,9 +332,7 @@ class SignatureParamName(AbstractNameDefinition, ParamNameInterface):
         return contexts
 
 
-class UnresolvableParamName(AbstractNameDefinition, ParamNameInterface):
-    api_type = u'param'
-
+class UnresolvableParamName(ParamNameInterface, AbstractNameDefinition):
     def __init__(self, compiled_obj, name, default):
         self.parent_context = compiled_obj.parent_context
         self.string_name = name

jedi/evaluate/compiled/mixed.py

@@ -4,6 +4,7 @@ Used only for REPL Completion.
 
 import inspect
 import os
+import sys
 
 from jedi.parser_utils import get_cached_code_lines
 
@@ -131,6 +132,9 @@ def _load_module(evaluator, path):
 
 def _get_object_to_check(python_object):
     """Check if inspect.getfile has a chance to find the source."""
+    if sys.version_info[0] > 2:
+        python_object = inspect.unwrap(python_object)
+
     if (inspect.ismodule(python_object) or
             inspect.isclass(python_object) or
             inspect.ismethod(python_object) or
@@ -146,10 +150,7 @@ def _get_object_to_check(python_object):
         raise TypeError  # Prevents computation of `repr` within inspect.
 
 
-def _find_syntax_node_name(evaluator, access_handle):
-    # TODO accessing this is bad, but it probably doesn't matter that much,
-    # because we're working with interpreteters only here.
-    python_object = access_handle.access._obj
+def _find_syntax_node_name(evaluator, python_object):
     try:
         python_object = _get_object_to_check(python_object)
         path = inspect.getsourcefile(python_object)
@@ -224,10 +225,12 @@ def _create(evaluator, access_handle, parent_context, *args):
         parent_context=parent_context and parent_context.compiled_object
     )
 
-    result = _find_syntax_node_name(evaluator, access_handle)
+    # TODO accessing this is bad, but it probably doesn't matter that much,
+    # because we're working with interpreteters only here.
+    python_object = access_handle.access._obj
+    result = _find_syntax_node_name(evaluator, python_object)
     if result is None:
         # TODO Care about generics from stuff like `[1]` and don't return like this.
-        python_object = access_handle.access._obj
         if type(python_object) in (dict, list, tuple):
             return ContextSet({compiled_object})
 

jedi/evaluate/context/function.py

@@ -64,8 +64,9 @@ class FunctionMixin(object):
                 origin_scope=origin_scope
             )
         else:
-            scope = self.py__class__()
-            for filter in scope.get_filters(search_global=False, origin_scope=origin_scope):
+            cls = self.py__class__()
+            for instance in cls.execute_evaluated():
+                for filter in instance.get_filters(search_global=False, origin_scope=origin_scope):
                     yield filter
 
     def py__get__(self, instance, class_context):

jedi/evaluate/context/instance.py

@@ -462,12 +462,13 @@ class InstanceClassFilter(AbstractFilter):
             origin_scope=origin_scope,
             is_instance=True,
         ))
+        assert isinstance(self._class_filter, ClassFilter), self._class_filter
 
     def get(self, name):
-        return self._convert(self._class_filter.get(name))
+        return self._convert(self._class_filter.get(name, from_instance=True))
 
     def values(self):
-        return self._convert(self._class_filter.values())
+        return self._convert(self._class_filter.values(from_instance=True))
 
     def _convert(self, names):
         return [LazyInstanceClassName(self._instance, self._class_context, n) for n in names]
@@ -503,7 +504,7 @@ class SelfAttributeFilter(ClassFilter):
             if trailer.type == 'trailer' \
                     and len(trailer.parent.children) == 2 \
                     and trailer.children[0] == '.':
-                if name.is_definition() and self._access_possible(name):
+                if name.is_definition() and self._access_possible(name, from_instance=True):
                     # TODO filter non-self assignments.
                     yield name
 

jedi/evaluate/context/klass.py

@@ -45,7 +45,7 @@ from jedi.evaluate import compiled
 from jedi.evaluate.lazy_context import LazyKnownContexts
 from jedi.evaluate.filters import ParserTreeFilter
 from jedi.evaluate.names import TreeNameDefinition, ContextName
-from jedi.evaluate.arguments import unpack_arglist
+from jedi.evaluate.arguments import unpack_arglist, ValuesArguments
 from jedi.evaluate.base_context import ContextSet, iterator_to_context_set, \
     NO_CONTEXTS
 from jedi.evaluate.context.function import FunctionAndClassBase
@@ -109,13 +109,27 @@ class ClassFilter(ParserTreeFilter):
             node = get_cached_parent_scope(self._used_names, node)
         return False
 
-    def _access_possible(self, name):
+    def _access_possible(self, name, from_instance=False):
+        # Filter for ClassVar variables
+        # TODO this is not properly done, yet. It just checks for the string
+        # ClassVar in the annotation, which can be quite imprecise. If we
+        # wanted to do this correct, we would have to resolve the ClassVar.
+        if not from_instance:
+            expr_stmt = name.get_definition()
+            if expr_stmt is not None and expr_stmt.type == 'expr_stmt':
+                annassign = expr_stmt.children[1]
+                if annassign.type == 'annassign':
+                    # TODO this is not proper matching
+                    if 'ClassVar' not in annassign.children[1].get_code():
+                        return False
+
+        # Filter for name mangling of private variables like __foo
         return not name.value.startswith('__') or name.value.endswith('__') \
             or self._equals_origin_scope()
 
-    def _filter(self, names):
+    def _filter(self, names, from_instance=False):
         names = super(ClassFilter, self)._filter(names)
-        return [name for name in names if self._access_possible(name)]
+        return [name for name in names if self._access_possible(name, from_instance)]
 
 
 class ClassMixin(object):
@@ -198,8 +212,14 @@ class ClassMixin(object):
         if not is_instance:
             from jedi.evaluate.compiled import builtin_from_name
             type_ = builtin_from_name(self.evaluator, u'type')
+            assert isinstance(type_, ClassContext)
             if type_ != self:
-                yield next(type_.get_filters())
+                for instance in type_.py__call__(ValuesArguments([])):
+                    instance_filters = instance.get_filters()
+                    # Filter out self filters
+                    next(instance_filters)
+                    next(instance_filters)
+                    yield next(instance_filters)
 
 
 class ClassContext(use_metaclass(CachedMetaClass, ClassMixin, FunctionAndClassBase)):

jedi/evaluate/context/module.py

@@ -145,13 +145,18 @@ class ModuleMixin(SubModuleDictMixin):
     # to push the star imports into Evaluator.module_cache, if we reenable this.
     @evaluator_method_cache([])
     def star_imports(self):
-        from jedi.evaluate.imports import infer_import
+        from jedi.evaluate.imports import Importer
 
         modules = []
         for i in self.tree_node.iter_imports():
             if i.is_star_import():
-                name = i.get_paths()[-1][-1]
-                new = infer_import(self, name)
+                new = Importer(
+                    self.evaluator,
+                    import_path=i.get_paths()[-1],
+                    module_context=self,
+                    level=i.level
+                ).follow()
+
                 for module in new:
                     if isinstance(module, ModuleContext):
                         modules += module.star_imports()

jedi/evaluate/filters.py

@@ -74,20 +74,22 @@ class AbstractUsedNamesFilter(AbstractFilter):
         self._used_names = self._module_node.get_used_names()
         self.context = context
 
-    def get(self, name):
+    def get(self, name, **filter_kwargs):
         return self._convert_names(self._filter(
-            _get_definition_names(self._used_names, name)
+            _get_definition_names(self._used_names, name),
+            **filter_kwargs
         ))
 
     def _convert_names(self, names):
         return [self.name_class(self.context, name) for name in names]
 
-    def values(self):
+    def values(self, **filter_kwargs):
         return self._convert_names(
             name
             for name_key in self._used_names
             for name in self._filter(
-                _get_definition_names(self._used_names, name_key)
+                _get_definition_names(self._used_names, name_key),
+                **filter_kwargs
             )
         )
 

jedi/evaluate/gradual/typing.py

@@ -19,7 +19,7 @@ from jedi.evaluate.filters import FilterWrapper
 from jedi.evaluate.names import NameWrapper, AbstractTreeName, \
     AbstractNameDefinition, ContextName
 from jedi.evaluate.helpers import is_string
-from jedi.evaluate.context.klass import ClassMixin
+from jedi.evaluate.context.klass import ClassMixin, ClassFilter
 
 _PROXY_CLASS_TYPES = 'Tuple Generic Protocol Callable Type'.split()
 _TYPE_ALIAS_TYPES = {
@@ -54,12 +54,15 @@ class _BaseTypingContext(Context):
         return self._tree_name
 
     def get_filters(self, *args, **kwargs):
-        # TODO this is obviously wrong.
-        class EmptyFilter():
-            def get(self, name):
+        # TODO this is obviously wrong. Is it though?
+        class EmptyFilter(ClassFilter):
+            def __init__(self):
+                pass
+
+            def get(self, name, **kwargs):
                 return []
 
-            def values(self):
+            def values(self, **kwargs):
                 return []
 
         yield EmptyFilter()
@@ -112,6 +115,8 @@ class TypingModuleName(NameWrapper):
             yield builtin_from_name(evaluator, u'True')
         elif name == 'overload':
             yield OverloadFunction.create_cached(evaluator, self.parent_context, self.tree_name)
+        elif name == 'NewType':
+            yield NewTypeFunction.create_cached(evaluator, self.parent_context, self.tree_name)
         elif name == 'cast':
             # TODO implement cast
             yield CastFunction.create_cached(evaluator, self.parent_context, self.tree_name)
@@ -456,6 +461,32 @@ class OverloadFunction(_BaseTypingContext):
         return func_context_set
 
 
+class NewTypeFunction(_BaseTypingContext):
+    def py__call__(self, arguments):
+        ordered_args = arguments.unpack()
+        next(ordered_args, (None, None))
+        _, second_arg = next(ordered_args, (None, None))
+        if second_arg is None:
+            return NO_CONTEXTS
+        return ContextSet(
+            NewType(
+                self.evaluator,
+                contextualized_node.context,
+                contextualized_node.node,
+                second_arg.infer(),
+            ) for contextualized_node in arguments.get_calling_nodes())
+
+
+class NewType(Context):
+    def __init__(self, evaluator, parent_context, tree_node, type_context_set):
+        super(NewType, self).__init__(evaluator, parent_context)
+        self._type_context_set = type_context_set
+        self.tree_node = tree_node
+
+    def py__call__(self, arguments):
+        return self._type_context_set.execute_annotation()
+
+
 class CastFunction(_BaseTypingContext):
     @repack_with_argument_clinic('type, object, /')
     def py__call__(self, type_context_set, object_context_set):

jedi/evaluate/names.py

@@ -151,6 +151,16 @@ class TreeNameDefinition(AbstractTreeName):
 
 
 class ParamNameInterface(object):
+    api_type = u'param'
+
+    def _kind_string(self):
+        kind = self.get_kind()
+        if kind == Parameter.VAR_POSITIONAL:  # *args
+            return '*'
+        if kind == Parameter.VAR_KEYWORD:  # **kwargs
+            return '**'
+        return ''
+
     def get_kind(self):
         raise NotImplementedError
 
@@ -158,9 +168,7 @@ class ParamNameInterface(object):
         raise NotImplementedError
 
 
-class ParamName(AbstractTreeName, ParamNameInterface):
-    api_type = u'param'
-
+class ParamName(ParamNameInterface, AbstractTreeName):
     def __init__(self, parent_context, tree_name):
         self.parent_context = parent_context
         self.tree_name = tree_name
@@ -168,6 +176,15 @@ class ParamName(AbstractTreeName, ParamNameInterface):
     def _get_param_node(self):
         return search_ancestor(self.tree_name, 'param')
 
+    @property
+    def string_name(self):
+        name = self.tree_name.value
+        if name.startswith('__'):
+            # Params starting with __ are an equivalent to positional only
+            # variables in typeshed.
+            name = name[2:]
+        return name
+
     def get_kind(self):
         tree_param = self._get_param_node()
         if tree_param.star_count == 1:  # *args
@@ -175,17 +192,29 @@ class ParamName(AbstractTreeName, ParamNameInterface):
         if tree_param.star_count == 2:  # **kwargs
             return Parameter.VAR_KEYWORD
 
+        # Params starting with __ are an equivalent to positional only
+        # variables in typeshed.
+        if tree_param.name.value.startswith('__'):
+            return Parameter.POSITIONAL_ONLY
+
         parent = tree_param.parent
+        param_appeared = False
         for p in parent.children:
+            if param_appeared:
+                if p == '/':
+                    return Parameter.POSITIONAL_ONLY
+            else:
+                if p == '*':
+                    return Parameter.KEYWORD_ONLY
                 if p.type == 'param':
                     if p.star_count:
                         return Parameter.KEYWORD_ONLY
                     if p == tree_param:
-                    break
+                        param_appeared = True
         return Parameter.POSITIONAL_OR_KEYWORD
 
     def to_string(self):
-        output = self.string_name
+        output = self._kind_string() + self.string_name
         param_node = self._get_param_node()
         if param_node.annotation is not None:
             output += ': ' + param_node.annotation.get_code(include_prefix=False)

jedi/evaluate/signature.py

@@ -25,7 +25,9 @@ class AbstractSignature(object):
                     yield '/'
                     is_positional = False
 
-                if kind == Parameter.KEYWORD_ONLY and not is_kw_only:
+                if kind == Parameter.VAR_POSITIONAL:
+                    is_kw_only = True
+                elif kind == Parameter.KEYWORD_ONLY and not is_kw_only:
                     yield '*'
                     is_kw_only = True
 

jedi/plugins/stdlib.py

@@ -19,10 +19,9 @@ from jedi.evaluate.arguments import ValuesArguments, \
     repack_with_argument_clinic, AbstractArguments, TreeArgumentsWrapper
 from jedi.evaluate import analysis
 from jedi.evaluate import compiled
-from jedi.evaluate.context.instance import \
-    AbstractInstanceContext, BoundMethod, InstanceArguments
+from jedi.evaluate.context.instance import BoundMethod, InstanceArguments
 from jedi.evaluate.base_context import ContextualizedNode, \
-    NO_CONTEXTS, ContextSet, ContextWrapper
+    NO_CONTEXTS, ContextSet, ContextWrapper, LazyContextWrapper
 from jedi.evaluate.context import ClassContext, ModuleContext, \
     FunctionExecutionContext
 from jedi.evaluate.context import iterable
@@ -230,20 +229,38 @@ def builtins_type(objects, bases, dicts):
         return objects.py__class__()
 
 
-class SuperInstance(AbstractInstanceContext):
+class SuperInstance(LazyContextWrapper):
     """To be used like the object ``super`` returns."""
-    def __init__(self, evaluator, cls):
-        su = cls.py_mro()[1]
-        super().__init__(evaluator, su and su[0] or self)
+    def __init__(self, evaluator, instance):
+        self.evaluator = evaluator
+        self._instance = instance  # Corresponds to super().__self__
+
+    def _get_bases(self):
+        return self._instance.py__class__().py__bases__()
+
+    def _get_wrapped_context(self):
+        objs = self._get_bases()[0].infer().execute_evaluated()
+        if not objs:
+            # This is just a fallback and will only be used, if it's not
+            # possible to find a class
+            return self._instance
+        return next(iter(objs))
+
+    def get_filters(self, search_global=False, until_position=None, origin_scope=None):
+        for b in self._get_bases():
+            for obj in b.infer().execute_evaluated():
+                for f in obj.get_filters():
+                    yield f
 
 
 @argument_clinic('[type[, obj]], /', want_context=True)
 def builtins_super(types, objects, context):
-    # TODO make this able to detect multiple inheritance super
     if isinstance(context, FunctionExecutionContext):
         if isinstance(context.var_args, InstanceArguments):
-            su = context.var_args.instance.py__class__().py__bases__()
-            return su[0].infer().execute_evaluated()
+            instance = context.var_args.instance
+            # TODO if a class is given it doesn't have to be the direct super
+            #      class, it can be an anecestor from long ago.
+            return ContextSet({SuperInstance(instance.evaluator, instance)})
 
     return NO_CONTEXTS
 
@@ -582,4 +599,8 @@ _implemented = {
         # being used instead. This only matters for 3.7+.
         '_alias': lambda obj, arguments: NO_CONTEXTS,
     },
+    'dataclasses': {
+        # For now this works at least better than Jedi trying to understand it.
+        'dataclass': lambda obj, arguments: NO_CONTEXTS,
+    },
 }

requirements.txt

@@ -1 +1 @@
-parso>=0.3.0
+parso>=0.5.0

setup.py

@@ -37,7 +37,8 @@ setup(name='jedi',
       install_requires=install_requires,
       extras_require={
           'testing': [
-              'pytest>=3.1.0',
+              # Pytest 5 doesn't support Python 2 and Python 3.4 anymore.
+              'pytest>=3.1.0,<5.0.0',
               # docopt for sith doctests
               'docopt',
               # coloroma for colored debug output
@@ -60,6 +61,7 @@ setup(name='jedi',
           'Programming Language :: Python :: 3.5',
           'Programming Language :: Python :: 3.6',
           'Programming Language :: Python :: 3.7',
+          'Programming Language :: Python :: 3.8',
           'Topic :: Software Development :: Libraries :: Python Modules',
           'Topic :: Text Editors :: Integrated Development Environments (IDE)',
           'Topic :: Utilities',

test/completion/basic.py

@@ -18,8 +18,10 @@ int(str)
 str..
 #? []
 a(0):.
-#? 2 ['and', 'or', 'if', 'is', 'in', 'not']
+#? 2 []
 0x0
+#? []
+1j
 #? ['and', 'or', 'if', 'is', 'in', 'not']
 1j 
 x = None()

test/completion/decorators.py

@@ -310,11 +310,14 @@ follow_statement(1)
 # class decorators should just be ignored
 @should_ignore
 class A():
+    x = 3
     def ret(self):
         return 1
 
 #? int()
 A().ret()
+#? int()
+A().x
 
 
 # -----------------

test/completion/goto.py

@@ -109,6 +109,23 @@ class X():
 #! 3 []
 X(foo=x)
 
+
+# Multiple inheritance
+class Foo:
+    def foo(self):
+        print("foo")
+class Bar:
+    def bar(self):
+        print("bar")
+class Baz(Foo, Bar):
+    def baz(self):
+        #! ['def foo']
+        super().foo
+        #! ['def bar']
+        super().bar
+        #! ['instance Foo']
+        super()
+
 # -----------------
 # imports
 # -----------------
@@ -203,9 +220,10 @@ for key, value in [(1,2)]:
     #! ['for key, value in [(1,2)]: key']
     key
 
-for i in []:
-    #! ['for i in []: i']
-    i
+#! 4 ['for y in [1]: y']
+for y in [1]:
+    #! ['for y in [1]: y']
+    y
 
 # -----------------
 # decorator

test/completion/pep0484_typing.py

@@ -256,6 +256,31 @@ for key in x.keys():
 for value in x.values():
     #? int()
     value
+
+WrappingType = typing.NewType('WrappingType', str) # Chosen arbitrarily
+y = WrappingType(0) # Per https://github.com/davidhalter/jedi/issues/1015#issuecomment-355795929
+#? str()
+y
+
+def testnewtype(y):
+    """
+    :type y: WrappingType
+    """
+    #? str()
+    y
+    #? ["upper"]
+    y.u
+
+WrappingType2 = typing.NewType()
+
+def testnewtype2(y):
+    """
+    :type y: WrappingType2
+    """
+    #?
+    y
+    #? []
+    y.
 # python >= 3.4
 
 class TestDefaultDict(typing.DefaultDict[str, int]):
@@ -295,7 +320,6 @@ import typing as t
 def union2(x: t.Union[int, str]):
     #? int() str()
     x
-
 from typing import Union
 def union3(x: Union[int, str]):
     #? int() str()

test/completion/pep0526_variables.py

@@ -38,12 +38,16 @@ for char in NOT_DEFINED:
     char
 
 
+# -------------------------
+# instance/class vars
+# -------------------------
+
 class Foo():
     bar: int
     baz: typing.ClassVar[str]
 
 
-#? int()
+#?
 Foo.bar
 #? int()
 Foo().bar
@@ -51,3 +55,61 @@ Foo().bar
 Foo.baz
 #? str()
 Foo().baz
+
+class VarClass:
+    var_instance1: int = 1
+    var_instance2: float
+    var_class1: typing.ClassVar[str] = 1
+    var_class2: typing.ClassVar[bytes]
+
+    def __init__(self):
+        #? int()
+        d.var_instance1
+        #? float()
+        d.var_instance2
+        #? str()
+        d.var_class1
+        #? bytes()
+        d.var_class2
+        #? []
+        d.int
+        #? ['var_class1', 'var_class2', 'var_instance1', 'var_instance2']
+        self.var_
+
+
+#? ['var_class1', 'var_class2']
+VarClass.var_
+#?
+VarClass.var_instance1
+#?
+VarClass.var_instance2
+#? str()
+VarClass.var_class1
+#? bytes()
+VarClass.var_class2
+#? []
+VarClass.int
+
+d = VarClass()
+#? ['var_class1', 'var_class2', 'var_instance1', 'var_instance2']
+d.var_
+#? int()
+d.var_instance1
+#? float()
+d.var_instance2
+#? str()
+d.var_class1
+#? bytes()
+d.var_class2
+#? []
+d.int
+
+
+
+import dataclasses
+@dataclasses.dataclass
+class DC:
+    name: int = 1
+
+#? int()
+DC().name

test/test_api/test_api.py

@@ -73,7 +73,7 @@ def _check_number(Script, source, result='float'):
 
 def test_completion_on_number_literals(Script):
     # No completions on an int literal (is a float).
-    assert [c.name for c in Script('1.').completions()] \
+    assert [c.name for c in Script('1. ').completions()] \
         == ['and', 'if', 'in', 'is', 'not', 'or']
 
     # Multiple points after an int literal basically mean that there's a float
@@ -109,9 +109,12 @@ def test_completion_on_complex_literals(Script):
     _check_number(Script, '1j.', 'complex')
     _check_number(Script, '44.j.', 'complex')
     _check_number(Script, '4.0j.', 'complex')
-    # No dot no completion - I thought, but 4j is actually a literall after
+    # No dot no completion - I thought, but 4j is actually a literal after
     # which a keyword like or is allowed. Good times, haha!
-    assert ({c.name for c in Script('4j').completions()} ==
+    # However this has been disabled again, because it apparently annoyed
+    # users. So no completion after j without a space :)
+    assert not Script('4j').completions()
+    assert ({c.name for c in Script('4j ').completions()} ==
             {'if', 'and', 'in', 'is', 'not', 'or'})
 
 

test/test_api/test_call_signatures.py

@@ -1,12 +1,13 @@
+import sys
 from textwrap import dedent
 import inspect
-import warnings
 
 import pytest
 
 from ..helpers import TestCase
 from jedi import cache
 from jedi.parser_utils import get_call_signature
+from jedi import Interpreter
 
 
 def assert_signature(Script, source, expected_name, expected_index=0, line=None, column=None):
@@ -43,7 +44,7 @@ class TestCallSignatures(TestCase):
         run(s1, 'sorted', 0, 7)
         run(s1, 'sorted', 1, 9)
         run(s1, 'sorted', 1, 10)
-        run(s1, 'sorted', 1, 11)
+        run(s1, 'sorted', None, 11)
         run(s1, 'bool', 0, 15)
 
         s2 = "abs(), "
@@ -272,6 +273,13 @@ def test_int_params(Script):
     assert sig2.params[0].name == 'x'
 
 
+def test_pow_params(Script):
+    # See Github #1357.
+    for sig in Script('pow(').call_signatures():
+        param_names = [p.name for p in sig.params]
+        assert param_names in (['x', 'y'], ['x', 'y', 'z'])
+
+
 def test_param_name(Script):
     sigs = Script('open(something,').call_signatures()
     for sig in sigs:
@@ -394,6 +402,148 @@ def test_keyword_argument_index(Script, environment):
     assert get(both + 'foo(a, b, c').index == 0
 
 
+code1 = 'def f(u, /, v=3, *, abc, abd, xyz): pass'
+code2 = 'def g(u, /, v=3, *, abc, abd, xyz, **kwargs): pass'
+code3 = 'def h(u, /, v, *args, x=1, y): pass'
+code4 = 'def i(u, /, v, *args, x=1, y, **kwargs): pass'
+
+
+_calls = [
+    # No *args, **kwargs
+    (code1, 'f(', 0),
+    (code1, 'f(a', 0),
+    (code1, 'f(a,', 1),
+    (code1, 'f(a,b', 1),
+    (code1, 'f(a,b,', 2),
+    (code1, 'f(a,b,c', None),
+    (code1, 'f(a,b,a', 2),
+    (code1, 'f(a,b,a=', None),
+    (code1, 'f(a,b,abc', 2),
+    (code1, 'f(a,b,abc=(', 2),
+    (code1, 'f(a,b,abc=(f,1,2,3', 2),
+    (code1, 'f(a,b,abd', 3),
+    (code1, 'f(a,b,x', 4),
+    (code1, 'f(a,b,xy', 4),
+    (code1, 'f(a,b,xyz=', 4),
+    (code1, 'f(a,b,xy=', None),
+    (code1, 'f(u=', (0, None)),
+    (code1, 'f(v=', 1),
+
+    # **kwargs
+    (code2, 'g(a,b,a', 2),
+    (code2, 'g(a,b,abc', 2),
+    (code2, 'g(a,b,abd', 3),
+    (code2, 'g(a,b,arr', 5),
+    (code2, 'g(a,b,xy', 4),
+    (code2, 'g(a,b,xyz=', 4),
+    (code2, 'g(a,b,xy=', 5),
+    (code2, 'g(a,b,abc=1,abd=4,', 4),
+    (code2, 'g(a,b,abc=1,xyz=3,abd=4,', 5),
+    (code2, 'g(a,b,abc=1,abd=4,lala', 5),
+    (code2, 'g(a,b,abc=1,abd=4,lala=', 5),
+    (code2, 'g(a,b,abc=1,abd=4,abd=', 5),
+    (code2, 'g(a,b,kw', 5),
+    (code2, 'g(a,b,kwargs=', 5),
+    (code2, 'g(u=', (0, 5)),
+    (code2, 'g(v=', 1),
+
+    # *args
+    (code3, 'h(a,b,c', 2),
+    (code3, 'h(a,b,c,', 2),
+    (code3, 'h(a,b,c,d', 2),
+    (code3, 'h(a,b,c,d[', 2),
+    (code3, 'h(a,b,c,(3,', 2),
+    (code3, 'h(a,b,c,(3,)', 2),
+    (code3, 'h(a,b,args=', None),
+    (code3, 'h(u,v=', 1),
+    (code3, 'h(u=', (0, None)),
+    (code3, 'h(u,*xxx', 1),
+    (code3, 'h(u,*xxx,*yyy', 1),
+    (code3, 'h(u,*[]', 1),
+    (code3, 'h(u,*', 1),
+    (code3, 'h(u,*, *', 1),
+    (code3, 'h(u,1,**', 3),
+    (code3, 'h(u,**y', 1),
+    (code3, 'h(u,x=2,**', 1),
+    (code3, 'h(u,x=2,**y', 1),
+    (code3, 'h(u,v=2,**y', 3),
+    (code3, 'h(u,x=2,**vv', 1),
+
+    # *args, **kwargs
+    (code4, 'i(a,b,c,d', 2),
+    (code4, 'i(a,b,c,d,e', 2),
+    (code4, 'i(a,b,c,d,e=', 5),
+    (code4, 'i(a,b,c,d,e=3', 5),
+    (code4, 'i(a,b,c,d=,x=', 3),
+    (code4, 'i(a,b,c,d=5,x=4', 3),
+    (code4, 'i(a,b,c,d=5,x=4,y', 4),
+    (code4, 'i(a,b,c,d=5,x=4,y=3,', 5),
+    (code4, 'i(a,b,c,d=5,y=4,x=3,', 5),
+    (code4, 'i(a,b,c,d=4,', 3),
+    (code4, 'i(a,b,c,x=1,d=,', 4),
+
+    # Error nodes
+    (code4, 'i(1, [a,b', 1),
+    (code4, 'i(1, [a,b=,', 2),
+    (code4, 'i(1, [a?b,', 2),
+    (code4, 'i(1, [a?b,*', 2),
+    (code4, 'i(?b,*r,c', 1),
+    (code4, 'i(?*', 0),
+    (code4, 'i(?**', (0, 1)),
+]
+
+
+@pytest.mark.parametrize('ending', ['', ')'])
+@pytest.mark.parametrize('code, call, expected_index', _calls)
+def test_signature_index(skip_python2, Script, environment, code, call, expected_index, ending):
+    if isinstance(expected_index, tuple):
+        expected_index = expected_index[environment.version_info > (3, 8)]
+    if environment.version_info < (3, 8):
+        code = code.replace('/,', '')
+
+    sig, = Script(code + '\n' + call + ending, column=len(call)).call_signatures()
+    index = sig.index
+    assert expected_index == index
+
+
+@pytest.mark.skipif(sys.version_info[0] == 2, reason="Python 2 doesn't support __signature__")
+@pytest.mark.parametrize('code', ['foo', 'instance.foo'])
+def test_arg_defaults(Script, environment, code):
+    def foo(arg="bla", arg1=1):
+        pass
+
+    class Klass:
+        def foo(self, arg="bla", arg1=1):
+            pass
+
+    instance = Klass()
+
+    src = dedent("""
+        def foo2(arg="bla", arg1=1):
+            pass
+
+        class Klass2:
+            def foo2(self, arg="bla", arg1=1):
+                pass
+
+        instance = Klass2()
+        """)
+
+    executed_locals = dict()
+    exec(src, None, executed_locals)
+    locals_ = locals()
+
+    def iter_scripts():
+        yield Interpreter(code + '(', namespaces=[locals_])
+        yield Script(src + code + "2(")
+        yield Interpreter(code + '2(', namespaces=[executed_locals])
+
+    for script in iter_scripts():
+        signatures = script.call_signatures()
+        assert signatures[0].params[0].description in ('param arg="bla"', "param arg='bla'")
+        assert signatures[0].params[1].description == 'param arg1=1'
+
+
 def test_bracket_start(Script):
     def bracket_start(src):
         signatures = Script(src).call_signatures()

test/test_api/test_classes.py

@@ -7,19 +7,16 @@ from inspect import cleandoc
 import pytest
 
 import jedi
-from jedi import __doc__ as jedi_doc, names
-from ..helpers import TestCase
+from jedi import __doc__ as jedi_doc
 from jedi.evaluate.compiled import CompiledContextName
 
 
 def test_is_keyword(Script):
-    #results = Script('import ', 1, 1, None).goto_definitions()
-    #assert len(results) == 1 and results[0].is_keyword is True
     results = Script('str', 1, 1, None).goto_definitions()
     assert len(results) == 1 and results[0].is_keyword is False
 
 
-def test_basedefinition_type(Script, environment):
+def test_basedefinition_type(Script, names):
     def make_definitions():
         """
         Return a list of definitions for parametrized tests.
@@ -44,7 +41,7 @@ def test_basedefinition_type(Script, environment):
         """)
 
         definitions = []
-        definitions += names(source, environment=environment)
+        definitions += names(source)
 
         source += dedent("""
         variable = sys or C or x or f or g or g() or h""")
@@ -102,8 +99,8 @@ def test_function_call_signature_in_doc(Script):
     assert "f(x, y=1, z='a')" in str(doc)
 
 
-def test_param_docstring():
-    param = jedi.names("def test(parameter): pass", all_scopes=True)[1]
+def test_param_docstring(names):
+    param = names("def test(parameter): pass", all_scopes=True)[1]
     assert param.name == 'parameter'
     assert param.docstring() == ''
 
@@ -140,28 +137,32 @@ def test_completion_docstring(Script, jedi_path):
 
     docstr('abcd=3;abcd', '')
     docstr('"hello"\nabcd=3\nabcd', '')
-    docstr(dedent('''
+    docstr(
+        dedent('''
         def x():
             "hello"
             0
         x'''),
         'hello'
     )
-    docstr(dedent('''
+    docstr(
+        dedent('''
         def x():
             "hello";0
         x'''),
         'hello'
     )
     # Shouldn't work with a tuple.
-    docstr(dedent('''
+    docstr(
+        dedent('''
         def x():
             "hello",0
         x'''),
         ''
     )
     # Should also not work if we rename something.
-    docstr(dedent('''
+    docstr(
+        dedent('''
         def x():
             "hello"
         y = x
@@ -216,62 +217,47 @@ def test_param_endings(Script):
     assert [p.description for p in sig.params] == ['param a', 'param b=5', 'param c=""']
 
 
-class TestIsDefinition(TestCase):
-    @pytest.fixture(autouse=True)
-    def init(self, environment):
-        self.environment = environment
-
-    def _def(self, source, index=-1):
-        return names(
-            dedent(source),
+@pytest.mark.parametrize(
+    'code, index, name, is_definition', [
+        ('name', 0, 'name', False),
+        ('a = f(x)', 0, 'a', True),
+        ('a = f(x)', 1, 'f', False),
+        ('a = f(x)', 2, 'x', False),
+    ]
+)
+def test_is_definition(names, code, index, name, is_definition):
+    d = names(
+        dedent(code),
         references=True,
         all_scopes=True,
-            environment=self.environment
     )[index]
+    assert d.name == name
+    assert d.is_definition() == is_definition
 
-    def _bool_is_definitions(self, source):
-        ns = names(dedent(source), references=True, all_scopes=True)
+
+@pytest.mark.parametrize(
+    'code, expected', (
+        ('import x as a', [False, True]),
+        ('from x import y', [False, True]),
+        ('from x.z import y', [False, False, True]),
+    )
+)
+def test_is_definition_import(names, code, expected):
+    ns = names(dedent(code), references=True, all_scopes=True)
     # Assure that names are definitely sorted.
     ns = sorted(ns, key=lambda name: (name.line, name.column))
-        return [name.is_definition() for name in ns]
-
-    def test_name(self):
-        d = self._def('name')
-        assert d.name == 'name'
-        assert not d.is_definition()
-
-    def test_stmt(self):
-        src = 'a = f(x)'
-        d = self._def(src, 0)
-        assert d.name == 'a'
-        assert d.is_definition()
-        d = self._def(src, 1)
-        assert d.name == 'f'
-        assert not d.is_definition()
-        d = self._def(src)
-        assert d.name == 'x'
-        assert not d.is_definition()
-
-    def test_import(self):
-        assert self._bool_is_definitions('import x as a') == [False, True]
-        assert self._bool_is_definitions('from x import y') == [False, True]
-        assert self._bool_is_definitions('from x.z import y') == [False, False, True]
+    assert [name.is_definition() for name in ns] == expected
 
 
-class TestParent(TestCase):
-    @pytest.fixture(autouse=True)
-    def init(self, Script):
-        self.Script = Script
-
-    def _parent(self, source, line=None, column=None):
-        def_, = self.Script(dedent(source), line, column).goto_assignments()
+def test_parent(Script):
+    def _parent(source, line=None, column=None):
+        def_, = Script(dedent(source), line, column).goto_assignments()
         return def_.parent()
 
-    def test_parent(self):
-        parent = self._parent('foo=1\nfoo')
+    parent = _parent('foo=1\nfoo')
     assert parent.type == 'module'
 
-        parent = self._parent('''
+    parent = _parent('''
         def spam():
             if 1:
                 y=1
@@ -279,10 +265,11 @@ class TestParent(TestCase):
     assert parent.name == 'spam'
     assert parent.parent().type == 'module'
 
-    def test_on_function(self):
-        parent = self._parent('''\
-            def spam():
-                pass''', 1, len('def spam'))
+
+def test_parent_on_function(Script):
+    code = 'def spam():\n pass'
+    def_, = Script(code, line=1, column=len('def spam')).goto_assignments()
+    parent = def_.parent()
     assert parent.name == ''
     assert parent.type == 'module'
 
@@ -331,8 +318,8 @@ different as an implementation.
 """
 
 
-def test_goto_assignment_repetition(environment):
-    defs = names('a = 1; a', references=True, definitions=False, environment=environment)
+def test_goto_assignment_repetition(names):
+    defs = names('a = 1; a', references=True, definitions=False)
     # Repeat on the same variable. Shouldn't change once we're on a
     # definition.
     for _ in range(3):
@@ -341,34 +328,34 @@ def test_goto_assignment_repetition(environment):
         assert ass[0].description == 'a = 1'
 
 
-def test_goto_assignments_named_params(environment):
+def test_goto_assignments_named_params(names):
     src = """\
             def foo(a=1, bar=2):
                 pass
             foo(bar=1)
           """
-    bar = names(dedent(src), references=True, environment=environment)[-1]
+    bar = names(dedent(src), references=True)[-1]
     param = bar.goto_assignments()[0]
     assert (param.line, param.column) == (1, 13)
     assert param.type == 'param'
 
 
-def test_class_call(environment):
+def test_class_call(names):
     src = 'from threading import Thread; Thread(group=1)'
-    n = names(src, references=True, environment=environment)[-1]
+    n = names(src, references=True)[-1]
     assert n.name == 'group'
     param_def = n.goto_assignments()[0]
     assert param_def.name == 'group'
     assert param_def.type == 'param'
 
 
-def test_parentheses(environment):
-    n = names('("").upper', references=True, environment=environment)[-1]
+def test_parentheses(names):
+    n = names('("").upper', references=True)[-1]
     assert n.goto_assignments()[0].name == 'upper'
 
 
-def test_import(environment):
-    nms = names('from json import load', references=True, environment=environment)
+def test_import(names):
+    nms = names('from json import load', references=True)
     assert nms[0].name == 'json'
     assert nms[0].type == 'module'
     n = nms[0].goto_assignments()[0]
@@ -381,7 +368,7 @@ def test_import(environment):
     assert n.name == 'load'
     assert n.type == 'function'
 
-    nms = names('import os; os.path', references=True, environment=environment)
+    nms = names('import os; os.path', references=True)
     assert nms[0].name == 'os'
     assert nms[0].type == 'module'
     n = nms[0].goto_assignments()[0]
@@ -392,7 +379,7 @@ def test_import(environment):
     assert n.name == 'path'
     assert n.type == 'module'
 
-    nms = names('import os.path', references=True, environment=environment)
+    nms = names('import os.path', references=True)
     n = nms[0].goto_assignments()[0]
     assert n.name == 'os'
     assert n.type == 'module'
@@ -403,8 +390,8 @@ def test_import(environment):
     assert n.type == 'module'
 
 
-def test_import_alias(environment):
-    nms = names('import json as foo', references=True, environment=environment)
+def test_import_alias(names):
+    nms = names('import json as foo', references=True)
     assert nms[0].name == 'json'
     assert nms[0].type == 'module'
     assert nms[0]._name.tree_name.parent.type == 'dotted_as_name'

test/test_api/test_completion.py

@@ -119,7 +119,8 @@ def test_generator(Script):
 
 def test_in_comment(Script):
     assert Script(" # Comment").completions()
-    assert Script("max_attr_value = int(2) # Cast to int for spe").completions()
+    # TODO this is a bit ugly, that the behaviors in comments are different.
+    assert not Script("max_attr_value = int(2) # Cast to int for spe").completions()
 
 
 def test_async(Script, environment):
@@ -140,3 +141,18 @@ def test_async(Script, environment):
 
 def test_with_stmt_error_recovery(Script):
     assert Script('with open('') as foo: foo.\na', line=1).completions()
+
+
+@pytest.mark.parametrize(
+    'code, has_keywords', (
+        ('', True),
+        ('x;', True),
+        ('1', False),
+        ('1 ', True),
+        ('1\t', True),
+        ('1\n', True),
+        ('1\\\n', True),
+    )
+)
+def test_keyword_completion(Script, code, has_keywords):
+    assert has_keywords == any(x.is_keyword for x in Script(code).completions())

test/test_api/test_defined_names.py

@@ -1,30 +1,22 @@
 """
-Tests for `api.defined_names`.
+Tests for `api.names`.
 """
 
 from textwrap import dedent
 
-import pytest
 
-from jedi import names
-from ..helpers import TestCase
-
-
-class TestDefinedNames(TestCase):
-    @pytest.fixture(autouse=True)
-    def init(self, environment):
-        self.environment = environment
-
-    def assert_definition_names(self, definitions, names_):
+def _assert_definition_names(definitions, names_):
     assert [d.name for d in definitions] == names_
 
-    def check_defined_names(self, source, names_):
-        definitions = names(dedent(source), environment=self.environment)
-        self.assert_definition_names(definitions, names_)
+
+def _check_names(names, source, names_):
+    definitions = names(dedent(source))
+    _assert_definition_names(definitions, names_)
     return definitions
 
-    def test_get_definitions_flat(self):
-        self.check_defined_names("""
+
+def test_get_definitions_flat(names):
+    _check_names(names, """
         import module
         class Class:
             pass
@@ -33,25 +25,27 @@ class TestDefinedNames(TestCase):
         data = None
         """, ['module', 'Class', 'func', 'data'])
 
-    def test_dotted_assignment(self):
-        self.check_defined_names("""
+
+def test_dotted_assignment(names):
+    _check_names(names, """
     x = Class()
     x.y.z = None
     """, ['x', 'z'])  # TODO is this behavior what we want?
 
-    def test_multiple_assignment(self):
-        self.check_defined_names("""
-        x = y = None
-        """, ['x', 'y'])
 
-    def test_multiple_imports(self):
-        self.check_defined_names("""
+def test_multiple_assignment(names):
+    _check_names(names, "x = y = None", ['x', 'y'])
+
+
+def test_multiple_imports(names):
+    _check_names(names, """
     from module import a, b
     from another_module import *
     """, ['a', 'b'])
 
-    def test_nested_definitions(self):
-        definitions = self.check_defined_names("""
+
+def test_nested_definitions(names):
+    definitions = _check_names(names, """
     class Class:
         def f():
             pass
@@ -59,12 +53,12 @@ class TestDefinedNames(TestCase):
             pass
     """, ['Class'])
     subdefinitions = definitions[0].defined_names()
-        self.assert_definition_names(subdefinitions, ['f', 'g'])
-        self.assertEqual([d.full_name for d in subdefinitions],
-                         ['__main__.Class.f', '__main__.Class.g'])
+    _assert_definition_names(subdefinitions, ['f', 'g'])
+    assert [d.full_name for d in subdefinitions] == ['__main__.Class.f', '__main__.Class.g']
 
-    def test_nested_class(self):
-        definitions = self.check_defined_names("""
+
+def test_nested_class(names):
+    definitions = _check_names(names, """
     class L1:
         class L2:
             class L3:
@@ -75,12 +69,13 @@ class TestDefinedNames(TestCase):
     """, ['L1', 'f'])
     subdefs = definitions[0].defined_names()
     subsubdefs = subdefs[0].defined_names()
-        self.assert_definition_names(subdefs, ['L2', 'f'])
-        self.assert_definition_names(subsubdefs, ['L3', 'f'])
-        self.assert_definition_names(subsubdefs[0].defined_names(), ['f'])
+    _assert_definition_names(subdefs, ['L2', 'f'])
+    _assert_definition_names(subsubdefs, ['L3', 'f'])
+    _assert_definition_names(subsubdefs[0].defined_names(), ['f'])
 
-    def test_class_fields_with_all_scopes_false(self):
-        definitions = self.check_defined_names("""
+
+def test_class_fields_with_all_scopes_false(names):
+    definitions = _check_names(names, """
     from module import f
     g = f(f)
     class C:
@@ -92,11 +87,12 @@ class TestDefinedNames(TestCase):
     """, ['f', 'g', 'C', 'foo'])
     C_subdefs = definitions[-2].defined_names()
     foo_subdefs = definitions[-1].defined_names()
-        self.assert_definition_names(C_subdefs, ['h'])
-        self.assert_definition_names(foo_subdefs, ['x', 'bar'])
+    _assert_definition_names(C_subdefs, ['h'])
+    _assert_definition_names(foo_subdefs, ['x', 'bar'])
 
-    def test_async_stmt_with_all_scopes_false(self):
-        definitions = self.check_defined_names("""
+
+def test_async_stmt_with_all_scopes_false(names):
+    definitions = _check_names(names, """
     from module import f
     import asyncio
 
@@ -127,36 +123,37 @@ class TestDefinedNames(TestCase):
     foo_subdefs = definitions[4].defined_names()
     async_foo_subdefs = definitions[5].defined_names()
     cinst_subdefs = definitions[6].defined_names()
-        self.assert_definition_names(C_subdefs, ['h', '__init__', '__aenter__'])
-        self.assert_definition_names(foo_subdefs, ['x', 'bar'])
-        self.assert_definition_names(async_foo_subdefs, ['duration', 'wait', 'i'])
+    _assert_definition_names(C_subdefs, ['h', '__init__', '__aenter__'])
+    _assert_definition_names(foo_subdefs, ['x', 'bar'])
+    _assert_definition_names(async_foo_subdefs, ['duration', 'wait', 'i'])
     # We treat d as a name outside `async with` block
-        self.assert_definition_names(cinst_subdefs, [])
+    _assert_definition_names(cinst_subdefs, [])
 
-def test_follow_imports(environment):
+
+def test_follow_imports(names):
     # github issue #344
-    imp = names('import datetime', environment=environment)[0]
+    imp = names('import datetime')[0]
     assert imp.name == 'datetime'
     datetime_names = [str(d.name) for d in imp.defined_names()]
     assert 'timedelta' in datetime_names
 
 
-def test_names_twice(environment):
+def test_names_twice(names):
     source = dedent('''
     def lol():
         pass
     ''')
 
-    defs = names(source=source, environment=environment)
+    defs = names(source=source)
     assert defs[0].defined_names() == []
 
 
-def test_simple_name(environment):
-    defs = names('foo', references=True, environment=environment)
+def test_simple_name(names):
+    defs = names('foo', references=True)
     assert not defs[0]._name.infer()
 
 
-def test_no_error(environment):
+def test_no_error(names):
     code = dedent("""
         def foo(a, b):
             if a == 10:

test/test_api/test_interpreter.py

@@ -262,7 +262,7 @@ def test_completion_params():
 def test_completion_param_annotations():
     # Need to define this function not directly in Python. Otherwise Jedi is to
     # clever and uses the Python code instead of the signature object.
-    code = 'def foo(a: 1, b: str, c: int = 1.0): pass'
+    code = 'def foo(a: 1, b: str, c: int = 1.0) -> bytes: pass'
     exec_(code, locals())
     script = jedi.Interpreter('foo', [locals()])
     c, = script.completions()
@@ -271,6 +271,9 @@ def test_completion_param_annotations():
     assert [d.name for d in b.infer()] == ['str']
     assert {d.name for d in c.infer()} == {'int', 'float'}
 
+    d, = jedi.Interpreter('foo()', [locals()]).goto_definitions()
+    assert d.name == 'bytes'
+
 
 def test_keyword_argument():
     def f(some_keyword_argument):
@@ -423,3 +426,16 @@ def test_simple_completions(code, completions):
 
     defs = jedi.Interpreter(code, [locals()]).completions()
     assert [d.name for d in defs] == completions
+
+
+@pytest.mark.skipif(sys.version_info[0] == 2, reason="Python 2 doesn't have lru_cache")
+def test__wrapped__():
+    from functools import lru_cache
+
+    @lru_cache(maxsize=128)
+    def syslogs_to_df():
+            pass
+
+    c, = jedi.Interpreter('syslogs_to_df', [locals()]).completions()
+    # Apparently the function starts on the line where the decorator starts.
+    assert c.line == syslogs_to_df.__wrapped__.__code__.co_firstlineno + 1

test/test_evaluate/test_imports.py

@@ -462,3 +462,16 @@ def test_import_with_semicolon(Script):
     names = [c.name for c in Script('xzy; from abc import ').completions()]
     assert 'ABCMeta' in names
     assert 'abc' not in names
+
+
+def test_relative_import_star(Script):
+    # Coming from github #1235
+    import jedi
+
+    source = """
+    from . import *
+    furl.c
+    """
+    script = jedi.Script(source,3,len("furl.c"), 'export.py')
+
+    assert script.completions()

test/test_evaluate/test_signature.py

@@ -32,3 +32,31 @@ def test_compiled_signature(Script, environment, code, sig, names, op, version):
     signature, = compiled.get_signatures()
     assert signature.to_string() == sig
     assert [n.string_name for n in signature.get_param_names()] == names
+
+
+@pytest.mark.parametrize(
+    'code, expected', [
+        ('def f(a, * args, x): pass\n f(', 'f(a, *args, x)'),
+        ('def f(a, *, x): pass\n f(', 'f(a, *, x)'),
+        ('def f(*, x= 3,**kwargs): pass\n f(', 'f(*, x=3, **kwargs)'),
+        ('def f(x,/,y,* ,z): pass\n f(', 'f(x, /, y, *, z)'),
+        ('def f(a, /, *, x=3, **kwargs): pass\n f(', 'f(a, /, *, x=3, **kwargs)'),
+    ]
+)
+def test_tree_signature(Script, environment, code, expected):
+    # Only test this in the latest version, because of /
+    if environment.version_info < (3, 8):
+        pytest.skip()
+
+    sig, = Script(code).call_signatures()
+    assert expected == sig._signature.to_string()
+
+
+def test_pow_signature(Script):
+    # See github #1357
+    sigs = Script('pow(').call_signatures()
+    strings = {sig._signature.to_string() for sig in sigs}
+    assert strings == {'pow(x: float, y: float, z: float, /) -> float',
+                       'pow(x: float, y: float, /) -> float',
+                       'pow(x: int, y: int, z: int, /) -> Any',
+                       'pow(x: int, y: int, /) -> Any'}