如何将 Python 2 代码移植到 Python 3

作者:

Brett Cannon

Python 2 reached its official end-of-life at the start of 2020. This means that no new bug reports, fixes, or changes will be made to Python 2 - it's no longer supported: see PEP 373 and status of Python versions.

如果您希望迁移扩展模块而不是纯 Python 代码,请参阅 将扩展模块移植到 Python 3

已归档的 python-porting 邮件列表可能包含一些有用的指导。

Since Python 3.13 the original porting guide was discontinued. You can find the old guide in the archive.

Third-party guides

There are also multiple third-party guides that might be useful: