Fixed assorted flake8 errors.

2 files changed, 5 insertions, 2 deletions

diff --git a/django/db/models/base.py b/django/db/models/base.py
index 9409454d3e..c96507d5a1 100644
--- a/django/db/models/base.py
+++ b/django/db/models/base.py
@@ -164,7 +164,7 @@ class ModelBase(type):
         # Basic setup for proxy models.
         if is_proxy:
             base = None
-            for parent in [cls for cls in parents if hasattr(cls, '_meta')]:
+            for parent in [kls for kls in parents if hasattr(kls, '_meta')]:
                 if parent._meta.abstract:
                     if parent._meta.fields:
                         raise TypeError("Abstract base class containing model fields not permitted for proxy model '%s'." % name)
diff --git a/django/db/models/fields/files.py b/django/db/models/fields/files.py
index 557ec6ec8a..08ac4413a0 100644
--- a/django/db/models/fields/files.py
+++ b/django/db/models/fields/files.py
@@ -142,11 +142,14 @@ class FileDescriptor(object):
     The descriptor for the file attribute on the model instance. Returns a
     FieldFile when accessed so you can do stuff like::
 
+        >>> from myapp.models import MyModel
+        >>> instance = MyModel.objects.get(pk=1)
         >>> instance.file.size
 
     Assigns a file object on assignment so you can do::
 
-        >>> instance.file = File(...)
+        >>> with open('/tmp/hello.world', 'r') as f:
+        ...     instance.file = File(f)
 
     """
     def __init__(self, field):