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Wed Feb 10 19:14:18 EST 2016 · https://mail.python.org/pipermail/python-dev/2016-February/143269.html

On 02/10/2016 04:04 PM, Steven D'Aprano wrote:

 > change to a single rule "one or more underscores may appear between
 > two (hex)digits, but otherwise nowhere else". That's much simpler to
 > understand than a series of restrictions as given above.

I like the simpler rule, but I would also allow for an underscore 
between the base and the first digit:

0x_1ef9_ab22

is easier (at least, for me ;)
to parse than

0x1ef9_ab22

However, since Georg is doing the work, I'm not going to argue too hard.

--
~Ethan~

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Showing content from https://mail.python.org/pipermail/python-dev/2016-February/143269.html below:

[Python-Dev] PEP 515: Underscores in Numeric Literals