What does the Python nonlocal statement do (in Python 3.0 and later)?
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Comprehensive Model Answer
Verified Solution
In short, it lets you assign values to a variable in an outer (but non-global) scope.
The nonlocal statement causes the listed identifiers to refer to previously bound variables in the nearest enclosing scope excluding globals.
For example the counter generator can be rewritten to use this so that it looks more like the idioms of languages with closures.
def make_counter():
count = 0
def counter():
nonlocal count
count += 1
return count
return counter
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