Printing unicode characters to stdout in python prints wrong glyphs

问题

I want to print a set of Unicode characters to my command prompt terminal. Even when I enforce the encoding to be "UTF-8" the terminal prints some garbage.

$python -c "import sys; print sys.stdout.write(u'\u2044'.encode('UTF-8'))"
ΓüäNone

$python -c "import sys; print sys.stdout.encoding"
cp437

My default terminal encoding is cp437 and I am trying to override that. The expected output here is Fraction slash ( ⁄ )

http://www.fileformat.info/info/unicode/char/2044/index.htm

The same piece of code works flawlessly in my Mac terminal and it uses UTF-8 as default encoding. Is there a way to display this on Windows as well? The font I use on windows command prompt is consolas.

I want my code to work with any Unicode characters, not just this particular example since the input is a web query result and I have no control over it.

回答1:

You have to use a UTF-8 code page (cp65001) to expect UTF-8 encoded text to display.

Python 3.3 claims to support code page 65001 (UTF-8) on Windows.

C:\>chcp 65001
Active code page: 65001

C:\>python
Python 3.3.0rc1 (v3.3.0rc1:8bb5c7bc46ba, Aug 25 2012, 13:50:30) [MSC v.1600 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> print('\u2044')
⁄

Although it is buggy:

>>> print('\u2044')
⁄

>>> print('\u2044'*8)
⁄⁄⁄⁄⁄⁄⁄⁄
��⁄⁄⁄⁄
⁄⁄
��

>>> print('1\u20442 2\u20443 4\u20445')
1⁄2 2⁄3 4⁄5
⁄5

回答2:

Python cannot control the encoding used by your terminal; you'll have to change that somewhere else.

In other words, just because you force python to output UTF-8 encoded text to the terminal, does not mean your terminal will magically start to accept that output as UTF-8 as well.

The Mac OS X terminal has already been configured to work with UTF-8.

On Windows, you can switch the console codepage with the chcp command: