Add ParamDefinition.kind, fixes #1361

jedi/api/classes.py

@@ -4,10 +4,9 @@ These classes are the much bigger part of the whole API, because they contain
 the interesting information about completion and goto operations.
 """
 import re
+import sys
 import warnings
 
-from parso.python.tree import search_ancestor
-
 from jedi import settings
 from jedi import debug
 from jedi.evaluate.utils import unite
@@ -681,6 +680,20 @@ class ParamDefinition(Definition):
     def to_string(self):
         return self._name.to_string()
 
+    @property
+    def kind(self):
+        """
+        Returns an enum instance. Returns the same values as the builtin
+        :py:attr:`inspect.Parameter.kind`.
+
+        No support for Python 2 anymore.
+        """
+        if sys.version_info[0] < 3:
+            raise NotImplementedError(
+                'Python 2 is end-of-life, the new feature is not available for it'
+            )
+        return self._name.get_kind()
+
 
 def _format_signatures(context):
     return '\n'.join(

test/test_api/test_signatures.py

@@ -51,8 +51,11 @@ def test_param_default(Script, code, expected_params):
 
 @pytest.mark.parametrize(
     'code, index, param_code, kind', [
-        ('def f(x=1): ...\nf', 0, 'x=1', ...),
-        ('def f(*args:int): ...\nf', 0, '*args: int', ...),
+        ('def f(x=1): ...\nf', 0, 'x=1', 'POSITIONAL_OR_KEYWORD'),
+        ('def f(*args:int): ...\nf', 0, '*args: int', 'VAR_POSITIONAL'),
+        ('def f(**kwargs: List[x]): ...\nf', 0, '**kwargs: List[x]', 'VAR_KEYWORD'),
+        ('def f(*, x:int=5): ...\nf', 0, 'x: int=5', 'KEYWORD_ONLY'),
+        ('def f(*args, x): ...\nf', 1, 'x', 'KEYWORD_ONLY'),
     ]
 )
 def test_param_kind_and_name(code, index, param_code, kind, Script, skip_python2):
@@ -60,3 +63,4 @@ def test_param_kind_and_name(code, index, param_code, kind, Script, skip_python2
     sig, = func.get_signatures()
     param = sig.params[index]
     assert param.to_string() == param_code
+    assert param.kind.name == kind