except KeyboardInterrupt, e

https://linuxconfig.org/how-to-switch-between-python-versions-on-fedora-linux

Known problems with Fedora Linux and Python 3 version: Error message:

# yum search package  File "/usr/bin/yum", line 30    except KeyboardInterrupt, e:                            ^SyntaxError: invalid syntax

If you set python3 globally on your system change the yumshebang to python2:

# vi /usr/bin/yumFROM:#!/usr/bin/pythonTO:#!/usr/bin/python2.7

Similarly: Error message:

Downloading packages:  File "/usr/libexec/urlgrabber-ext-down", line 28    except OSError, e:                  ^SyntaxError: invalid syntaxExiting on user cancel

The issue is also related to Python 3 set as a default global version. To fix this error update/usr/libexec/urlgrabber-ext-down script:

# vi /usr/libexec/urlgrabber-ext-downFROM:#!/usr/bin/pythonTO:#!/usr/bin/python2.7