Goto didn't work well on imports in __init__.py files.

Fixes #956.

jedi/evaluate/finder.py

@@ -30,13 +30,14 @@ from jedi.evaluate import analysis
 from jedi.evaluate import flow_analysis
 from jedi.evaluate import param
 from jedi.evaluate import helpers
-from jedi.evaluate.filters import get_global_filters
+from jedi.evaluate.filters import get_global_filters, TreeNameDefinition
 from jedi.evaluate.context import ContextualizedName, ContextualizedNode
 from jedi.parser_utils import is_scope, get_parent_scope
 
 
 class NameFinder(object):
-    def __init__(self, evaluator, context, name_context, name_or_str, position=None):
+    def __init__(self, evaluator, context, name_context, name_or_str,
+                 position=None, analysis_errors=True):
         self._evaluator = evaluator
         # Make sure that it's not just a syntax tree node.
         self._context = context
@@ -48,6 +49,7 @@ class NameFinder(object):
             self._string_name = name_or_str
         self._position = position
         self._found_predefined_types = None
+        self._analysis_errors = analysis_errors
 
     @debug.increase_indent
     def find(self, filters, attribute_lookup):
@@ -65,7 +67,7 @@ class NameFinder(object):
 
         types = self._names_to_types(names, attribute_lookup)
 
-        if not names and not types \
+        if not names and self._analysis_errors and not types \
                 and not (isinstance(self._name, tree.Name) and
                          isinstance(self._name.parent.parent, tree.Param)):
             if isinstance(self._name, tree.Name):
@@ -122,7 +124,19 @@ class NameFinder(object):
         for filter in filters:
             names = filter.get(self._string_name)
             if names:
+                if len(names) == 1:
+                    n, = names
+                    if isinstance(n, TreeNameDefinition):
+                        # Something somewhere went terribly wrong. This
+                        # typically happens when using goto on an import in an
+                        # __init__ file. I think we need a better solution, but
+                        # it's kind of hard, because for Jedi it's not clear
+                        # that that name has not been defined, yet.
+                        if n.tree_name == self._name:
+                            if self._name.get_definition().type == 'import_from':
+                                continue
                 break
+
         debug.dbg('finder.filter_name "%s" in (%s): %s@%s', self._string_name,
                   self._context, names, self._position)
         return list(names)