Python升级带来的yum异常：File "/usr/bin/yum", line 30
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python升级带来的yum异常：File "/usr/bin/yum", line 30
问题：
$ yum
File "/usr/bin/yum", line 30
except KeyboardInterrupt, e:
^
SyntaxError: invalid syntax
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原因
这是因为yum采用python作为命令解释器，这可以从/usr/bin/yum文件中第一行#!/usr/bin/python发现。而python版本之间兼容性不太好，使得2.X版本与3.0版本之间存在语法不一致问题。而CentOS 5自带的yum采用的是python2.4，当系统将python升级到2.6或3.0后，出现语法解释错误。
解决办法：
一是升级yum，一是修改yum的解释器为旧版本python2.4（如果你没有采用覆盖升级的话）。
修改yum的解释器为旧版本python2.4：
1 2 3 | $ vi /usr/bin/yum 将第一行"#!/usr/bin/python" 改为 "#!/usr/bin/python2.4"即可。 |
或者修改默认的python版本，/usr/bin/python为2.4.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | [root@rhel6lhr Packages]# yum install perl-IO-Socket-SSL File "/usr/bin/yum", line 30 except KeyboardInterrupt, e: ^ SyntaxError: invalid syntax [root@rhel6lhr Packages]# python Python 3.6.4 (default, Apr 15 2018, 10:55:33) [GCC 4.4.7 20120313 (Red Hat 4.4.7-4)] on linux Type "help", "copyright", "credits" or "license" for more information. >>> exit Use exit() or Ctrl-D (i.e. EOF) to exit >>> exit() [root@rhel6lhr Packages]# [root@rhel6lhr Packages]# [root@rhel6lhr Packages]# [root@rhel6lhr Packages]# which python /usr/bin/python [root@rhel6lhr Packages]# python python python2.6 python3 python3.6-config python3.6m-config python_bk python2 python2_bk python3.6 python3.6m python3-config [root@rhel6lhr Packages]# ll /usr/bin/python lrwxrwxrwx 1 root root 34 Apr 15 2018 /usr/bin/python -> /usr/bin/python3.6.4/bin/python3.6 [root@rhel6lhr Packages]# rm -rf /usr/bin/python [root@rhel6lhr Packages]# ll /usr/bin/python ls: cannot access /usr/bin/python: No such file or directory [root@rhel6lhr Packages]# ll /usr/bin/python3.6.4/bin/python3.6 -rwxr-xr-x 2 root root 10037966 Apr 15 2018 /usr/bin/python3.6.4/bin/python3.6 [root@rhel6lhr Packages]# python2 Python 2.6.6 (r266:84292, Sep 4 2013, 07:46:00) [GCC 4.4.7 20120313 (Red Hat 4.4.7-3)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> exit Use exit() or Ctrl-D (i.e. EOF) to exit >>> >>> exit() [root@rhel6lhr Packages]# [root@rhel6lhr Packages]# [root@rhel6lhr Packages]# ln -s /usr/bin/python2 /usr/bin/python |
类似报错
参考
https://www.xmmup.com/yumanzhuangbaocuono-module-named-yum.html
