[issue35195] Pandas read_csv() is 3.5X Slower on Python 3.7.1 vs Python 3.6.7 & 3.5.2 On Windows 10

[STINNER Victor]

STINNER Victor <vstinner at redhat.com> added the comment:

Can someone please try to write an example which only uses the stdlib?

> The culprit is the isdigit function called in the parsers extension module.

What are these extensions? Where do them come from?

> Any way you can help test out a config setting to avoid the locale changes on Python 3.7.0a4+?

(I fixed 2.7 => 3.7)

I don't understand which "locale changes" you are talking about. You can change the locale using locale.setlocale().

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<https://bugs.python.org/issue35195>
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