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| author | Serhiy Storchaka <storchaka@gmail.com> | 2015-05-31 17:21:00 (GMT) |
|---|---|---|
| committer | Serhiy Storchaka <storchaka@gmail.com> | 2015-05-31 17:21:00 (GMT) |
| commit | c7797dc7482035ee166ca2e941b623382b92e1fc (patch) | |
| tree | 526e26fa4dac506f02859fdbe946d33ed4165f5e /Lib/_pyio.py | |
| parent | cfb7028df4bdf12325786e48ebef3b4982efa119 (diff) | |
| download | cpython-c7797dc7482035ee166ca2e941b623382b92e1fc.zip cpython-c7797dc7482035ee166ca2e941b623382b92e1fc.tar.gz cpython-c7797dc7482035ee166ca2e941b623382b92e1fc.tar.bz2 | |
Issue #19543: Emit deprecation warning for known non-text encodings.
Backported issues #19619: encode() and decode() methods and constructors
of str, unicode and bytearray classes now emit deprecation warning for known
non-text encodings when Python is ran with the -3 option.
Backported issues #20404: io.TextIOWrapper (and hence io.open()) now uses the
internal codec marking system added to emit deprecation warning for known non-text
encodings at stream construction time when Python is ran with the -3 option.
Diffstat (limited to 'Lib/_pyio.py')
| -rw-r--r-- | Lib/_pyio.py | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Lib/_pyio.py b/Lib/_pyio.py index a7f4301..694b778 100644 --- a/Lib/_pyio.py +++ b/Lib/_pyio.py @@ -7,6 +7,7 @@ from __future__ import (print_function, unicode_literals) import os import abc import codecs +import sys import warnings import errno # Import thread instead of threading to reduce startup cost @@ -1497,6 +1498,11 @@ class TextIOWrapper(TextIOBase): if not isinstance(encoding, basestring): raise ValueError("invalid encoding: %r" % encoding) + if sys.py3kwarning and not codecs.lookup(encoding)._is_text_encoding: + msg = ("%r is not a text encoding; " + "use codecs.open() to handle arbitrary codecs") + warnings.warnpy3k(msg % encoding, stacklevel=2) + if errors is None: errors = "strict" else: |