Many times I want a function parameter that is an iterable but not a
string. Usually I do:
try:
var.__iter__
except AttributeError:
# not an iterable
else:
try:
var.isascii
except AttributeError:
# put yuour code here
or
from collections.abc import Iterable
if isinstance(var, Iterable) and not isinstance(var, str):
# put yuour code here
The first example uses duck typing but it's more verbose. I use the
first method in an home-made utility function.
I think it could be interesting to add a syntactic sugar to do this. Maybe a
collections.notTextIterable()
collections.nonTextIterable()
collections.notStrIterable()
collections.iterableNotStr()
?
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