Hi List,
Lets say I want to know if the value of `x` is bool(True).
My preferred way to do it is:
if x is True:
pass
Because this tests both the value and the type.
But this appears to be explicitly called out as being "Worse" in PEP8:
"""
Don't compare boolean values to True or False using ==.
Yes: if greeting:
No: if greeting == True:
Worse: if greeting is True:
"""
Why?
If `x` can also have a value of "1"(str) or 1(int) then in both cases
this would be a false positive if I were to do the below as they'll both
equate to True:
if x:
pass
The PEP for boolean type (285 -
https://www.python.org/dev/peps/pep-0285/) doesn't mention the "is"
comparison keyword at all as far as I can tell.
What am I missing?
Thanks
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