Namespaces in functions vs classes
Gerald Britton
gerald.britton at gmail.com
Tue Apr 19 12:47:40 EDT 2011
>Gerald Britton wrote:
>> I now understand the Python does
>> not consider a class definition as a separate namespace as it does for
>> function definitions. That is a helpful understanding.
>That is not correct. Classes are separate namespaces -- they just
>aren't automatically searched. The only namespaces that are
>automatically searched are local, non-local, global, and built-in.
I see you misunderstood my observation: Python does not consider a class
definition as a separate namespace *as it does* for function definitions.
Of course classes are separate namespaces, or they would not work at
all. However,
Python does not automatically search class namespaces -- even within the class
definition -- *as it does* within function definitions.
That is the key insight I was seeking. To search a class namespace one must
qualify the lookup with the class or instance name.
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