attributes of Python classes
Terry Reedy
tjreedy at udel.edu
Thu Mar 18 08:56:26 EST 2004
> > I agree that initializing all attributes in __init__ is a good idea.
> > Even if you initialize them to None and overwrite them in some other
> > method before ever accessing the value, it's still a nice way to help
> > soem future reader understand your class better. If it's a good idea
to
> > have self-documenting code, I guess it's an even better idea to have
> > executable comments :-)
An alternative is to give attributes a default value of None as class
attributes. This avoid time and space overhead of doing same on per
instance basis. Instances only need instance-specific value when there is
one.
class C:
a = None # what a is
b = None # what b is
Terry J. Reedy
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