Fixing more issues found with pylint. Some that were supposed to
have been fixed in the previous sweep (Ie0db839e) but were missed:
C0321: More than one statement on a single line
W0622: Redefining built-in 'name'
And some more:
W0631: Using possibly undefined loop variable 'name'
W0223: Method 'name' is abstract in class 'name' but is not overridden
W0231: __init__ method from base class 'name' is not called
Change-Id: Ie119183708609d6279e973057a385fde864230c3
