Allow files for get_default_project, fixes #1552

jedi/_compatibility.py

@@ -339,6 +339,13 @@ try:
 except NameError:
     PermissionError = IOError
 
+try:
+    NotADirectoryError = NotADirectoryError
+except NameError:
+    class NotADirectoryError(Exception):
+        # Don't implement this for Python 2 anymore.
+        pass
+
 
 def no_unicode_pprint(dct):
     """

jedi/api/project.py

@@ -13,7 +13,7 @@ import json
 import sys
 
 from jedi._compatibility import FileNotFoundError, PermissionError, \
-    IsADirectoryError
+    IsADirectoryError, NotADirectoryError
 from jedi import debug
 from jedi.api.environment import get_cached_default_environment, create_environment
 from jedi.api.exceptions import WrongVersion
@@ -383,6 +383,8 @@ def get_default_project(path=None):
             return Project.load(dir)
         except (FileNotFoundError, IsADirectoryError, PermissionError):
             pass
+        except NotADirectoryError:
+            continue
 
         if first_no_init_file is None:
             if os.path.exists(os.path.join(dir, '__init__.py')):

test/test_api/test_project.py

@@ -20,6 +20,12 @@ def test_django_default_project(Script):
     assert script._inference_state.project._django is True
 
 
+def test_django_default_project_of_file(Script):
+    project = get_default_project(__file__)
+    d = os.path.dirname
+    assert project._path == d(d(d(__file__)))
+
+
 def test_interpreter_project_path():
     # Run from anywhere it should be the cwd.
     dir = os.path.join(root_dir, 'test')