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How do I restore an inline value when a parameter has the same name?

I know you shouldn't use built-in names as parameters for functions, but sometimes they make the most sense:

def foo(range=(4,5), type="round", len=2):

But if this has been done and the variable has range

been processed and is no longer needed, how do I go back to the built-in range

and use it internally foo()

?

del range

does not restore inline function:

UnboundLocalError: local variable 'range' referenced before assignment
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2 answers


For Python 2.x

import __builtin__
range = __builtin__.range


For Python 3.x

import builtins
range = builtins.range
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Also for both python versions you can use __builtins__

without importing anything.

Example -



>>> def foo(range=(4,5)):
...     print(range)
...     range = __builtins__.range
...     print(range)
...
>>> foo()
(4, 5)
<class 'range'>
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