PYTHONPATH的问题

时间:2012-09-30 19:24:49

标签: python pythonpath

从命令行(Mac OS),当我执行'echo $ PYTHONPATH'时,我得到:

> /opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7

如果我然后输入Python解释器并执行以下操作:

>>> import os
>>> os.environ['PYTHONPATH']
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/UserDict.py", line 23, in __getitem__
    raise KeyError(key)
KeyError: 'PYTHONPATH'

为什么会发生这种情况?

1 个答案:

答案 0 :(得分:2)

您忘记将其导出到环境中,以便子进程可以访问它;它目前只是一个bash变量。

export PYTHONPATH