Serhiy Storchaka <storchaka+cpyt...@gmail.com> added the comment:
The problem is that such exceptions are often used with the EAFP style. For
example:
while stop is None or i < stop:
try:
v = self[i]
if v is value or v == value:
return i
except IndexError:
break
i += 1
You caught IndexError and do something, but do not use the error message.
Formatting error message takes a time. I am sure that error messages of a wast
majority of IndexError exceptions are not used, just the type of the raised
exception matters.
----------
nosy: +serhiy.storchaka
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue44166>
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