STINNER Victor <[email protected]> added the comment:
> Lazy import
IMHO moving unparse code to a new _ast_unparse module, and use
ast.__getattr__() to lazily import it and bind it as the ast.unparse() function
is the best option, since __getattr__() alone is enough to implement the
laziness and it should be simple, something like:
def __getattr__(name):
if name == 'unparse':
import _ast_unparse
globals()['unpase'] = _ast_unparse.unparse
return _ast_unparse.unparse
else:
raise AttributeError
I never used a module __getattr__().
So _ast_unparse could use any super slow but cool Python feature, without
having to use dirty hacks to make the code lazy.
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<https://bugs.python.org/issue39069>
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