[issue15722] PEP 3121, 384 Refactoring applied to decimal module

[Antoine Pitrou]

Antoine Pitrou added the comment:

> 2) The patch slows down _decimal by 25% (!).

Ouch. That's an interesting observation, because I guess other modules could be affected as well.

Robin, can you please take care that other modules don't have significant performance regressions after your work? I'm not sure what kind of changes it involves, or if it's possible at all, but we don't want to slow down Python for what is mostly (IMO) a code cleanup.

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nosy: +loewis, pitrou

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