mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-10-09 16:34:44 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 17

bpo-39674: Revert "bpo-37330: open() no longer accept 'U' in file mode (GH-16959)" (GH-18767)

Browse source 
This reverts commit e471e72977.

The mode will be removed from Python 3.10.
This commit is contained in:
Victor Stinner 2020-03-04 18:50:22 +01:00 • committed by GitHub
parent 00c77ae55a
commit 942f7a2dea
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
13 changed files with 99 additions and 54 deletions
Download patch file Download diff file Expand all files Collapse all files

11
Lib/fileinput.py
View file

@ -209,10 +209,15 @@ class FileInput:
self._isstdin = False
self._backupfilename = None
# restrict mode argument to reading modes
if mode not in ('r', 'rb'):
raise ValueError("FileInput opening mode must be 'r' or 'rb'")
if mode not in ('r', 'rU', 'U', 'rb'):
raise ValueError("FileInput opening mode must be one of "
"'r', 'rU', 'U' and 'rb'")
if 'U' in mode:
import warnings
warnings.warn("'U' mode is deprecated",
DeprecationWarning, 2)
self._mode = mode
self._write_mode = mode.replace('r', 'w')
self._write_mode = mode.replace('r', 'w') if 'U' not in mode else 'w'
if openhook:
if inplace:
raise ValueError("FileInput cannot use an opening hook in inplace mode")