bpo-37330: open() no longer accept 'U' in file mode (GH-16959)
open(), io.open(), codecs.open() and fileinput.FileInput no longer
accept "U" ("universal newline") in the file mode. This flag was
deprecated since Python 3.3.diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst
index 28d9c7b..acf922d 100644
--- a/Doc/library/functions.rst
+++ b/Doc/library/functions.rst
@@ -1085,12 +1085,6 @@
first decoded using a platform-dependent encoding or using the specified
*encoding* if given.
- There is an additional mode character permitted, ``'U'``, which no longer
- has any effect, and is considered deprecated. It previously enabled
- :term:`universal newlines` in text mode, which became the default behaviour
- in Python 3.0. Refer to the documentation of the
- :ref:`newline <open-newline-parameter>` parameter for further details.
-
.. note::
Python doesn't depend on the underlying operating system's notion of text
@@ -1247,10 +1241,6 @@
* The file is now non-inheritable.
- .. deprecated-removed:: 3.4 4.0
-
- The ``'U'`` mode.
-
.. versionchanged::
3.5
@@ -1266,6 +1256,10 @@
* On Windows, opening a console buffer may return a subclass of
:class:`io.RawIOBase` other than :class:`io.FileIO`.
+ .. versionchanged:: 3.9
+ The ``'U'`` mode has been removed.
+
+
.. function:: ord(c)
Given a string representing one Unicode character, return an integer