Python - ValueError：未知区域设置：UTF-8 [重复]

我运行包含 Pandas（导致问题的那个）库的 python 脚本，我收到此错误：

Traceback (most recent call last):
  File "test.py", line 2, in <module>
    import pandas
ImportError: No module named pandas

但是如果我从包路径导入以确保它检测到 Pandas 库，我收到此错误消息

Traceback (most recent call last):
  File "test.py", line 3, in <module>
    import pandas
  File "/usr/local/lib/python2.7/site-packages/pandas/__init__.py", line 44, in <module>
    from pandas.core.api import *
  File "/usr/local/lib/python2.7/site-packages/pandas/core/api.py", line 9, in <module>
    from pandas.core.groupby import Grouper
  File "/usr/local/lib/python2.7/site-packages/pandas/core/groupby.py", line 16, in <module>
    from pandas.core.frame import DataFrame
  File "/usr/local/lib/python2.7/site-packages/pandas/core/frame.py", line 41, in <module>
    from pandas.core.series import Series
  File "/usr/local/lib/python2.7/site-packages/pandas/core/series.py", line 2864, in <module>
    import pandas.tools.plotting as _gfx
  File "/usr/local/lib/python2.7/site-packages/pandas/tools/plotting.py", line 28, in <module>
    import pandas.tseries.converter as conv
  File "/usr/local/lib/python2.7/site-packages/pandas/tseries/converter.py", line 7, in <module>
    import matplotlib.units as units
  File "/usr/local/lib/python2.7/site-packages/matplotlib/__init__.py", line 1131, in <module>
    rcParams = rc_params()
  File "/usr/local/lib/python2.7/site-packages/matplotlib/__init__.py", line 975, in rc_params
    return rc_params_from_file(fname, fail_on_error)
  File "/usr/local/lib/python2.7/site-packages/matplotlib/__init__.py", line 1100, in rc_params_from_file
    config_from_file = _rc_params_in_file(fname, fail_on_error)
  File "/usr/local/lib/python2.7/site-packages/matplotlib/__init__.py", line 1018, in _rc_params_in_file
    with _open_file_or_url(fname) as fd:
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/contextlib.py", line 17, in __enter__
    return self.gen.next()
  File "/usr/local/lib/python2.7/site-packages/matplotlib/__init__.py", line 1000, in _open_file_or_url
    encoding = locale.getdefaultlocale()[1]
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/locale.py", line 543, in getdefaultlocale
    return _parse_localename(localename)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/locale.py", line 475, in _parse_localename
    raise ValueError, 'unknown locale: %s' % localename
ValueError: unknown locale: UTF-8

我已经更新了我的.bash_profile and .bashrc有了这些行，但即使我已经重新启动终端和我的机器仍然无法工作。

export LANG="it_IT.UTF-8"  
export LC_COLLATE="it_IT.UTF-8"  
export LC_CTYPE="it_IT.UTF-8"  
export LC_MESSAGES="it_IT.UTF-8"  
export LC_MONETARY="it_IT.UTF-8"  
export LC_NUMERIC="it_IT.UTF-8"  
export LC_TIME="it_IT.UTF-8"  
export LC_ALL="it_IT.UTF-8"

我也启用了Set locale environment variables on startup在终端偏好设置中。

恐怕这个问题是由 El Capitan 引起的。

Edit： Pandas 及其依赖项有本地化错误 https://github.com/pydata/pandas/issues/4918在非 C 语言环境中发现并在最新版本中修复的问题。

当我通过以下方式将最新版本的 Pandas 下载到 OS X Yosemite 计算机上时sudo pip install pandas在设置为 it_IT.UTF-8 的终端中，然后将其导入到新的 Python 会话中，我无法重现此问题。

我现在最好的猜测 - 我想强调这只是一个猜测 - 是该文件夹中的 Pandas 版本早于这些修复，并且在 it_IT.UTF-8 中已损坏。 （总的来说，我确实认为这比 El Capitan 特有的问题更有可能。）

Your LC_ALL= is unset. That seems unusual; based on other answers here https://stackoverflow.com/questions/19961239/pelican-3-3-pelican-quickstart-error-valueerror-unknown-locale-utf-8 I think you should try setting it to LC_ALL="it_IT.UTF-8" and remove the other LC_ settings.

Then save your .bash_profile, open a new terminal tab, and try again.