坚持使用UTF-8作为默认编码 [英] Persist UTF-8 as Default Encoding

问题描述

我试图将UTF-8保留为Python的默认编码.

I tried to persist UTF-8 as the default encoding in Python.

我尝试过:

>>> import sys
>>> sys.getdefaultencoding()
'ascii'

我也尝试过:

>>> import sys
>>> reload(sys)
<module 'sys' (built-in)>
>>> sys.setdefaultencoding('UTF8')
>>> sys.getdefaultencoding()
'UTF8'
>>> 

但是在关闭会话并打开新会话之后，结果如下:

But after closing the session and opening a new session, the following was the result:

>>> import sys
>>> sys.getdefaultencoding()
'ascii'

如何保留更改?(我知道更改为UTF-8并不总是一个好主意.它在Python的Docker容器中).

How can I persist my changes? (I know that it's not always a good idea to change to UTF-8. It's in a Docker container of Python).

我知道这是可能的.我看到某个人(总是)使用UTF-8作为其默认编码.

I know it's possible. I saw someone who has UTF-8 as his default encoding (always).

推荐答案

请查看 site.py 库-这是sys.setdefaultencoding发生的地方.我认为，您可以修改或替换此模块，以使其在您的计算机上永久存在.这是其中的一些源代码，注释解释了一些内容:

Please take a look into site.py library - it is the place where sys.setdefaultencoding happens. You could, I think, modify or substitute this module in order to make it permanent on your machine. Here is some of it's source code, comments explains something:

def setencoding():
    """Set the string encoding used by the Unicode implementation.  The
    default is 'ascii', but if you're willing to experiment, you can
    change this."""

    encoding = "ascii" # Default value set by _PyUnicode_Init()
    if 0:
        # Enable to support locale aware default string encodings.
        import locale
        loc = locale.getdefaultlocale()
        if loc[1]:
            encoding = loc[1]
    if 0:
        # Enable to switch off string to Unicode coercion and implicit
        # Unicode to string conversion.
        encoding = "undefined"
    if encoding != "ascii":
        # On Non-Unicode builds this will raise an AttributeError...
        sys.setdefaultencoding(encoding) # Needs Python Unicode build !

完整源代码 https://hg.python.org/cpython/文件/2.7/Lib/site.py .

如果您想知道的话，这是他们删除sys.setdefaultencoding函数的地方:

This is the place where they delete the sys.setdefaultencoding function, if you were wondering:

def main():

    ...

    # Remove sys.setdefaultencoding() so that users cannot change the
    # encoding after initialization.  The test for presence is needed when
    # this module is run as a script, because this code is executed twice.
    if hasattr(sys, "setdefaultencoding"):
        del sys.setdefaultencoding

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