[Python-3000] Displaying strings containing unicode escapes at the interactive prompt

[atsuo ishimoto]

2008/4/16, Nick Coghlan <ncoghlan at gmail.com>:
> Oleg Broytmann wrote:
>  > On Wed, Apr 16, 2008 at 10:11:13PM +1000, Nick Coghlan wrote:
>  >> atsuo ishimoto wrote:
>  >>> IOError: [Errno 2] No such file or directory: '\u65e5\u672c\u8a9e'
>  >> This is starting to seem to me more like something to be addressed
>  >> through sys.displayhook/excepthook at the interactive interpreter level
>  >
>  >    The problem manifests itself in scripts, too:
>  >
>  > Traceback (most recent call last):
>  >   File "./ttt.py", line 4, in <module>
>  >     open("тест") # filename is in koi8-r encoding
>  > IOError: [Errno 2] No such file or directory: '\xd4\xc5\xd3\xd4'
>
>
> Hmm, the io module along with sys.stdout/err may be a better way to
>  attack the problem then. Given:
>
>  import sys, io
>
>  class ParseUnicodeEscapes(io.TextIOWrapper):
>    def write(self, text):
>      super().write(text.encode('latin-1').decode('unicode_escape'))
>
>  args = (sys.stdout.buffer, sys.stdout.encoding, sys.stdout.errors,
>          None, sys.stdout.line_buffering)
>
>  sys.stdout = ParseUnicodeEscapes(*args)
>
>  args = (sys.stderr.buffer, sys.stderr.encoding, sys.stderr.errors,
>          None, sys.stderr.line_buffering)
>
>  sys.stderr = ParseUnicodeEscapes(*args)
>
>  You get:
>
>   >>> "тест"
>  'тест'
>   >>> open("тест")
>

I got:

>>> print("あ")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<stdin>", line 3, in write
UnicodeEncodeError: 'latin-1' codec can't encode character 'あ'
in position 0: ordinal not in range(256)
>>> print('\\'+'u0041')
A

Your hack doesn't work. Displayhook hack doesn't work, too.

Question: Are you happy if you are forced to live with these hacks forever?
If not, why do you think I'll accept your suggestion?