[Python-Dev] PEP 435: pickling enums created with the functional API (original) (raw)

Piotr Duda duda.piotr at gmail.com
Tue May 7 16:48:26 CEST 2013

2013/5/7 Eli Bendersky <eliben at gmail.com>:

4) Using getframe(N) here seems like an overkill to me. What we really need is just the module in which the current execution currently is (i.e. the metaclass's new in our case). Would it make sense to add a new function somewhere in the stdlib of 3.4 (in sys or inspect or ...) that just provides the current module name? It seems that all Pythons should be able to easily provide it, it's certainly a very small subset of the functionality provided by walking the callframe stack. This function can then be used for build fully qualified names for pickling of Enum and namedtuple. Moreover, it can be general even more widely - dynamic class building is quite common in Python code, and as Nick mentioned somewhere earlier, the extra power of metaclasses in the recent 3.x's will probably make it even more common.

What about adding simple syntax (I proposed this earlier, but no one commented) that take care of assigning name and module, something like:

def name = expression

which would be rough equivalent for:

name = expression name.name = 'name' name.module = name

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