Summary of solving the yum error problem after upgrading Python to 3.6.6 on CentOS 7

I recently upgraded a test server operating system to Cent0S 7.5, and also upgraded Python from 2.7.5 to Python 3.6.6. After the upgrade, I found that an exception occurred when yum installed related packages, reporting an error such as "File "/usr/libexec/urlgrabber-ext-down", line 28". The specific error information is as follows:

# yum install openssl
..........................
Total download size: 1.7 M
Is this ok [y/d/N]: y
Downloading packages:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
File "/usr/libexec/urlgrabber-ext-down", line 28
except OSError, e:
^
SyntaxError: invalid syntax
File "/usr/libexec/urlgrabber-ext-down", line 28
except OSError, e:
^
SyntaxError: invalid syntax

After testing and verification, this problem can be solved by the following method:

Modify the Python version information in /usr/libexec/urlgrabber-ext-down

vi /usr/libexec/urlgrabber-ext-down changes /usr/bin/python to /usr/bin/python2.7 .

Summarize

The above is a summary of how to solve the yum error problem after upgrading Python to 3.6.6 on CentOS 7. I hope it will be helpful to you. If you have any questions, please leave me a message and I will reply to you in time. I would also like to thank everyone for their support of the 123WORDPRESS.COM website!
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