[doc] Fix copy.Error casing

[andresdelfino]

No description provided.

[tirkarthi]

Note: error is an alias for Error although Error is present in __all__ too

cpython/Lib/copy.py

Lines 55 to 57 in 2aabc32

	class Error(Exception):
	pass
	error = Error # backward compatibility

[andresdelfino]

@tirkarthi If "error" is a backward compatibility wart, we should be documenting Error instead, right?

[tirkarthi]

I was under the impression that with that comment Python 2 only had error and not Error. But the same alias is present in Python 2 too. So I guess it predates something more than 2.7. I agree with the change over documenting Error. I will wait for another core dev opinion. The git blame is as below :

227b1204681 (Fred Drake             2000-08-17 05:06:49 +0000  55) class Error(Exception):
88869f9787c (Tim Peters             2001-01-14 23:36:06 +0000  56)     pass
88869f9787c (Tim Peters             2001-01-14 23:36:06 +0000  57) error = Error   # backward compatibility

[orsenthil]

Documenting Error seems alright and seems more modern usage to me. +1 with this change.

[orsenthil]

Given Error is exposed via __all__ interface, it is accurate to update the documentation to reflect that.

[miss-islington]

Thanks @andresdelfino for the PR, and @orsenthil for merging it 🌮🎉.. I'm working now to backport this PR to: 3.9.
🐍🍒⛏🤖

[miss-islington]

Thanks @andresdelfino for the PR, and @orsenthil for merging it 🌮🎉.. I'm working now to backport this PR to: 3.8.
🐍🍒⛏🤖