【轉】python 修改os環境變量

時間 2019-12-01

原文原文鏈接

舉一個很簡單的例子，若是你發現一個包或者模塊，明明是有的，可是會發生這樣的錯誤：python

>>> from algorithm import *
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named algorithmlinux

那麼就應該是環境變量出問題了ubuntu

okay，來看怎麼搞app

>>>>> import sys
>>> sys.path
['', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-linux2', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages/PIL', '/usr/lib/python2.7/dist-packages/gst-0.10', '/usr/lib/python2.7/dist-packages/gtk-2.0', '/usr/lib/pymodules/python2.7', '/usr/lib/python2.7/dist-packages/ubuntu-sso-client', '/usr/lib/python2.7/dist-packages/ubuntuone-client', '/usr/lib/python2.7/dist-packages/ubuntuone-control-panel', '/usr/lib/python2.7/dist-packages/ubuntuone-couch', '/usr/lib/python2.7/dist-packages/ubuntuone-installer', '/usr/lib/python2.7/dist-packages/ubuntuone-storage-protocol']python2.7

首先，這些顯示出了Python本身的環境變量.net

而後get

>>> sys.path.append('/media/File/Code_DownloadCodeAndSelfCode/PyWorkPlace/xView')
>>> sys.path
['', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-linux2', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages/PIL', '/usr/lib/python2.7/dist-packages/gst-0.10', '/usr/lib/python2.7/dist-packages/gtk-2.0', '/usr/lib/pymodules/python2.7', '/usr/lib/python2.7/dist-packages/ubuntu-sso-client', '/usr/lib/python2.7/dist-packages/ubuntuone-client', '/usr/lib/python2.7/dist-packages/ubuntuone-control-panel', '/usr/lib/python2.7/dist-packages/ubuntuone-couch', '/usr/lib/python2.7/dist-packages/ubuntuone-installer', '/usr/lib/python2.7/dist-packages/ubuntuone-storage-protocol', '/media/File/Code_DownloadCodeAndSelfCode/PyWorkPlace/xView/emotionAnalyse', '/media/File/Code_DownloadCodeAndSelfCode/PyWorkPlace/xView']
>>> import algorithmit

這樣，就把本身的algorithm這個包導入了io

ok了！ast

但是這樣有個問題，下次還得設置才行。

那麼就改一下系統變量吧:

$export PYTHONPATH=$PYTHONPATH:/home/YOURSELFPATH

親測有效～