[Python-Dev] nonlocals() function? (original) (raw)
Antoine Pitrou solipsis at pitrou.net
Mon Apr 5 14:17:27 CEST 2010
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Steve Bonner <pythonsteve gmail.com> writes:
What do we think of adding a built-in nonlocals() function that would be similar to globals() and locals()? Like those functions, it would return a dictionary of variable names and their values. Since we now have the nonlocal statement, it would be consistent to keep the three scopes local/nonlocal/global with parallel capabilities.
These scopes don't have parallel capabilities:
def f(): ... x = 5 ... locals()['x'] = 6 ... return x ... f() 5
And it might sometimes be useful for code inside a nested function to see what variables are available at the enclosing level.
"It might sometimes be useful" translates in my head to "I've never seen an actual use case for this".
-1 on an useless complication of the interpreter.
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