python - 如何修复 ImportError : No module named packages. urllib3？

Question

我在 Ubuntu 机器上运行 Python 2.7.6。当我在终端中运行 twill-sh(Twill 是一种用于测试网站的浏览器)时，我得到以下信息:

Traceback (most recent call last):
  File "dep.py", line 2, in <module>
    import twill.commands
  File "/usr/local/lib/python2.7/dist-packages/twill/__init__.py", line 52, in <module>
    from shell import TwillCommandLoop
  File "/usr/local/lib/python2.7/dist-packages/twill/shell.py", line 9, in <module>
    from twill import commands, parse, __version__
  File "/usr/local/lib/python2.7/dist-packages/twill/commands.py", line 75, in <module>
    browser = TwillBrowser()
  File "/usr/local/lib/python2.7/dist-packages/twill/browser.py", line 31, in __init__
    from requests.packages.urllib3 import connectionpool as cpl
ImportError: No module named packages.urllib3

但是，我可以在 Python 控制台中导入 urllib 就好了。可能是什么原因？

Answer 1

如果您已经从默认版本安装了“请求”，您可能需要

sudo pip install --upgrade requests

感谢@bkzland 对先前回答的评论:

I followed these steps having the same error, I needed to use sudo pip install --upgrade each time to make it work. – bkzland Dec 17 '15 at 12:57

---现在，我如何使它成为我的 setup.py 中的依赖项？