[python]python2升python3後yum問題解決

問題描述：python File "/usr/bin/yum", line 30 except KeyboardInterrupt, e: 緣由：python2.7 安裝python3.7將python默認的解釋器設爲了python3.7;致使按3.7解析python2語法出錯。url 解決方案：code     修改第一行爲blog #!/usr/bin/python2.7   隨後語法

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