Don't emit no-member for classes with unknown bases.

Since we don't know what those bases might add, we simply ignore
the error in this case.

4 files changed, 26 insertions, 8 deletions

diff --git a/ChangeLog b/ChangeLog
index 025e922..8b356b1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -63,7 +63,12 @@ ChangeLog for Pylint
       Since the __new__ comes from builtins, it will not have attached any
       information regarding what parameters it expects, so the check
       will be useless. Retrieving __init__ in that case will at least
-      detect a couple of false negatives. Closes issue #429. 
+      detect a couple of false negatives. Closes issue #429.
+
+    * Don't emit no-member for classes with unknown bases.
+
+      Since we don't know what those bases might add, we simply ignore
+      the error in this case. 
 
 
 2015-03-14 -- 1.4.3
diff --git a/pylint/checkers/typecheck.py b/pylint/checkers/typecheck.py
index 784ca1d..ed3c901 100644
--- a/pylint/checkers/typecheck.py
+++ b/pylint/checkers/typecheck.py
@@ -28,7 +28,7 @@ from pylint.checkers import BaseChecker
 from pylint.checkers.utils import (
     safe_infer, is_super,
     check_messages, decorated_with_property,
-    decorated_with)
+    decorated_with, has_known_bases)
 
 MSGS = {
     'E1101': ('%s %r has no %r member',
@@ -112,8 +112,9 @@ def _emit_no_member(owner, owner_name, attrname,
         return False
     if isinstance(owner, astroid.Function) and owner.decorators:
         return False
-    if isinstance(owner, Instance) and owner.has_dynamic_getattr():
-        return False
+    if isinstance(owner, Instance):
+        if owner.has_dynamic_getattr() or not has_known_bases(owner):
+            return False
     # explicit skipping of module member access
     if owner.root().name in ignored_modules:
         return False
diff --git a/pylint/test/functional/class_members_py27.py b/pylint/test/functional/class_members_py27.py
index 40423b1..5bbbb65 100644
--- a/pylint/test/functional/class_members_py27.py
+++ b/pylint/test/functional/class_members_py27.py
@@ -1,6 +1,6 @@
 """ Various tests for class members access. """

-# pylint: disable=R0903,print-statement,no-absolute-import, metaclass-assignment

-

+# pylint: disable=R0903,print-statement,no-absolute-import, metaclass-assignment,import-error,no-init

+from missing import Missing

 class MyClass(object):

     """class docstring"""

 

@@ -49,3 +49,9 @@ TestMetaclass.register(int)
 UsingMetaclass.test()

 TestMetaclass().register(int) # [no-member]

 UsingMetaclass().test() # [no-member]

+

+

+class NoKnownBases(Missing):

+    """Don't emit no-member if we don't know the bases of a class."""

+

+NoKnownBases().lalala()

diff --git a/pylint/test/functional/class_members_py30.py b/pylint/test/functional/class_members_py30.py
index cf0e7bd..b8bc109 100644
--- a/pylint/test/functional/class_members_py30.py
+++ b/pylint/test/functional/class_members_py30.py
@@ -1,6 +1,6 @@
 """ Various tests for class members access. """

-# pylint: disable=R0903

-

+# pylint: disable=R0903,import-error,no-init

+from missing import Missing

 class MyClass(object):

     """class docstring"""

 

@@ -47,3 +47,9 @@ TestMetaclass.register(int)
 UsingMetaclass.test()

 TestMetaclass().register(int) # [no-member]

 UsingMetaclass().test() # [no-member]

+

+

+class NoKnownBases(Missing):

+    """Don't emit no-member if we don't know the bases of a class."""

+

+NoKnownBases().lalala()