Steven D'Aprano <steve+pyt...@pearwood.info> added the comment:
Guido wrote:
> it would require the math.log function to recognize rationals
I don't think it would. You don't need a type-check, you just need to check for
a pair of numerator and denominator attributes.
So we could do something like this, except in C:
try:
return log(float(x))
except DomainError:
try:
a = x.numerator
b = x.denominator
except AttributeError:
pass
else:
return log(a) - log(b)
raise
----------
nosy: +steven.daprano
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue42886>
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