Steven D'Aprano <[email protected]> added the comment:
To clarify further, unlike (say) Lua, Python doesn't allow variables to change
scope part-way through a function. (At least not without hacking the
byte-code.) In any function, a name refers to precisely one of (1) a local, (2)
a nonlocal, and (3) a global, so you cannot have something like this:
a = 1
def func():
print(a) # refers to global a
a = a + 1 # make a new local 'a'
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<https://bugs.python.org/issue37568>
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