[issue21195] None float format: incomplete documentation

[Eric V. Smith]

Eric V. Smith added the comment:

An empty format specifier can (and to my knowledge, does) match str(). So you get:

>>> format(1e10, '')
'10000000000.0'
>>> format(1e10, 'g')
'1e+10'
>>> str(1e10)
'10000000000.0'

The SO question is asking about an empty "presentation type", which is indeed similar to 'g' for floats.

I think this is all the same in 2.7 and 3.4, with the exception of how str() might operate on floats.

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nosy: +eric.smith

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