Why is universal newlines mode deprecated in Python?

2020年7月13日 — In Python 3, the “universal newline” is used by default when a file is open in text mode. The newline parameter of open() controls how universal newlines works.

2019年5月6日 — There is an additional mode character permitted, 'U', which no longer has any effect, and is considered deprecated. It previously enabled ...

2019年6月18日 — The U mode was deprecated since September 2012 (Python 3.3): you had 8 years to handle the DeprecationWarning. 8 years before actually ...

2002年1月14日 — In a Python with universal newline support open() the mode parameter can also be “U”, meaning “open for input as a text file with universal ...

2023年5月24日 — In Python 3, “universal newline” mode is used by default whenever a file is opened in text mode, and the 'U' flag has been deprecated since ...

2015年7月19日 — Regarding U flag: In addition to the standard fopen() values mode may be 'U' or 'rU'. Python is usually built with universal newlines support; ...

2020年2月5日 — In Python 3, the “universal newline” is used by default when a file is open in text mode. The newline parameter of open() controls how universal newlines works.

2023年8月22日 — The 'U' modifier in Python serves as an instrumental tool for enabling Universal Newlines when opening files in text mode.

2019年6月27日 — There is an additional mode character permitted, 'U' , which no longer has any effect, and is considered deprecated. It previously enabled ...

2015年9月30日 — The U flag to open 's mode parameter is deprecated in Python 3.3 and removed entirely in Python 3.11. – robertspierre. Commented Jun 15, 2023 ...