Question

我有一个最初安装了python 2.6的Redhat 6盒子（由/usr/bin/python调用）。几天前我安装了2.7.10（由/usr/local/bin/python或python调用）。

今天早些时候，我使用pip安装了sudo easy_install pip。 whereis pip的结果是pip: /usr/bin/pip2.6 /usr/bin/pip

然后我想通过运行pandas来安装sudo pip install pandas包。它报告成功，但import pandas对两个版本的python都产生错误：

myPrompt 733] python
Python 2.7.10 (default, Jul 16 2015, 14:41:11) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-11)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pandas
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named pandas
>>> exit()

myPrompt 734] /usr/bin/python
Python 2.6.6 (r266:84292, Nov 21 2013, 10:50:32) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pandas
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named pandas
>>> exit()

myPrompt 735] pip install pandas
Traceback (most recent call last):
  File "/usr/bin/pip", line 5, in <module>
    from pkg_resources import load_entry_point
  File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 2655, in <module>
    working_set.require(__requires__)
  File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 648, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 546, in resolve
    raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: pip==7.1.0

myPrompt 736] sudo pip install pandas
Enter PASSCODE:
Requirement already satisfied (use --upgrade to upgrade): pandas in /usr/lib64/python2.6/site-packages
Requirement already satisfied (use --upgrade to upgrade): python-dateutil in /usr/lib/python2.6/site-packages (from pandas)
Requirement already satisfied (use --upgrade to upgrade): pytz>=2011k in /usr/lib/python2.6/site-packages (from pandas)
Requirement already satisfied (use --upgrade to upgrade): numpy>=1.7.0 in /usr/lib64/python2.6/site-packages (from pandas)
Requirement already satisfied (use --upgrade to upgrade): six>=1.5 in /usr/lib/python2.6/site-packages (from python-dateutil->pandas)

因此pip配置存在某种混淆，以及如何安装软件包。我怎么解开这个？我需要重新安装pip吗？

最终，我不关心python 2.6并且只想使用2.7

THX

Answer 1

看起来原因是我以root身份安装了这些软件包。做

sudo chmod -R ugo+rX /usr/local/lib/python2.7/site-packages

解决了问题

Answer 2

作为参考，当您有多个Python安装时，例如通过brew，可能会发生这种情况。在这种情况下，删除一个：

brew remove python --force

这个适合我。

Answer 3

可以使用以下答案中提供的步骤修复此案例：Easy_install and pip broke: pkg_resources.DistributionNotFound: distribute==0.6.36

它只是用新的/正确的pip安装替换当前的pip安装（指的是新的/错误的python环境）。

关于python 2.6 / 2.7软件包安装的困惑

3 个答案: