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Wed Jul 16 17:51:39 CEST 2008 · https://mail.python.org/pipermail/python-dev/2008-July/081249.html

On Wed, Jul 16, 2008 at 4:15 PM, Eric Smith
<eric+python-dev at trueblade.com> wrote:
> There's no exponent until the number gets large.  I haven't looked up how
> big the number has to get.  On my Mac, it's somewhere between 1e50 and 1e60.

I think it's around 1e50, courtesy of the rather oddly-phrased line in
unicodeobject.c
(this is in py3k) that looks like:

    if (type == 'f' && (fabs(x) / 1e25) >= 1e25)

In any case, I agree that the current 'F' is strange.  Even after
having read the
relevant line of PEP 3101 several times in the past, part of my brain still
believes that something formatted with 'F' should have all letters appearing
in upper case.

Mark

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Showing content from https://mail.python.org/pipermail/python-dev/2008-July/081249.html below:

[Python-Dev] PEP 3101: floats format 'f' and 'F'