yum报错：File "/usr/bin/yum", line 30 except KeyboardInterrupt, e: SyntaxError: invalid syntax”

我安装redis时候python和它连接时报错，所以升级了python版本从2.7升级到了3.7.1，将3.7.1连接到了/usr/bin/python然后运行yum就报错 File "/usr/bin/yum", line 30     except KeyboardInterrupt, e:                             ^ SyntaxError: invalid

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