How to solve the problem of yum and pip errors caused by Python upgrade

This article mainly introduces to you the solution to the error reported by yum and pip due to Python upgrade. The solution is introduced in great detail through sample code. It has certain reference learning value for everyone's study or work. It needs Friends, please follow the editor to learn together.

Preface

This article mainly introduces how to solve the problem of yum and pip errors caused by Python upgrade, and shares it for your reference and study. Not much to say below, let’s take a look at the detailed introduction.

Reason:

yum is written in Python. The Python version on the server is too low and has been upgraded to 2.7, but yum/pip has not been upgraded, resulting in this error being reported when executing yum/pip.

yum reported an error:

There was a problem importing one of the Python modules
required to run yum. The error leading to this problem was:

 No module named yum

Please install a package which provides this module, or
verify that the module is installed correctly.

It's possible that the above module doesn't match the
current version of Python, which is:
2.7.10 (default, Sep 5 2017, 17:35:43) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-3)]

If you cannot solve this problem yourself, please go to 
the yum faq at:
 http://yum.baseurl.org/wiki/Faq

pip reported an error:

Traceback (most recent call last):
 File "/usr/bin/pip2", line 5, in <module>
 from pkg_resources import load_entry_point
ImportError: No module named pkg_resources

Solution:

1. Check the Python version and execute:

which python

You can see that there are two versions of Python.

2. View the yum file and execute:

vim /usr/bin/yum

You can see the Python reference of yum in the first line of the file. Change the original #!/usr/bin/python to #!/usr/bin/python2.6 (old version)

3. Jump out and execute yum again. Ready to use.

pip is modified in the same way

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