如何修复“更新替代方案:警告:强制重新安装替代方案/usr/bin/python3.8，因为链接组python3已损坏”？
如何修复“更新替代方案:警告:强制重新安装替代方案/usr/bin/python3.8，因为链接组python3已损坏”？
提问于 2020-10-05 15:03:59
在使用Ubuntu16.04.7的时候，我试图让python3.8成为我默认的python版本。我按照给出的说明操作了here，但是最终标准的python版本并没有改变。每当我跑步的时候
python -V输出总是
Python 3.7.9下面是sudo update-alternatives --config python3的输出
There are 2 choices for the alternative python3 (providing /usr/bin/python3).
Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/bin/python3.8 2 auto mode
1 /usr/bin/python3.7 1 manual mode
2 /usr/bin/python3.8 2 manual mode
Press <enter> to keep the current choice[*], or type selection number:当我选择'0‘时，我得到错误：
update-alternatives: warning: forcing reinstallation of alternative /usr/bin/python3.8 because link group python3 is broken唯一接近谷歌的是另一个没有答案的SO entry！
那么我该如何解决这个问题呢？
此外，下面是ls -l /usr/bin/python*的输出
lrwxrwxrwx 1 root root 18 Oct 17 2019 /usr/bin/python -> /usr/bin/python2.7
lrwxrwxrwx 1 root root 9 Nov 24 2017 /usr/bin/python2 -> python2.7
-rwxr-xr-x 1 root root 3488528 Jul 21 19:57 /usr/bin/python2.7
lrwxrwxrwx 1 root root 33 Jul 21 19:57 /usr/bin/python2.7-config -> x86_64-linux-gnu-python2.7-config
lrwxrwxrwx 1 root root 16 Nov 24 2017 /usr/bin/python2-config -> python2.7-config
-rwxr-xr-x 1 root root 306 Oct 24 2015 /usr/bin/python2-futurize
-rwxr-xr-x 1 root root 310 Oct 24 2015 /usr/bin/python2-pasteurize
lrwxrwxrwx 1 root root 25 Oct 5 08:59 /usr/bin/python3 -> /etc/alternatives/python3
-rwxr-xr-x 2 root root 4456208 Jul 19 22:14 /usr/bin/python3.5
lrwxrwxrwx 1 root root 33 Jul 19 22:14 /usr/bin/python3.5-config -> x86_64-linux-gnu-python3.5-config
-rwxr-xr-x 2 root root 4456208 Jul 19 22:14 /usr/bin/python3.5m
lrwxrwxrwx 1 root root 34 Jul 19 22:14 /usr/bin/python3.5m-config -> x86_64-linux-gnu-python3.5m-config
-rwxr-xr-x 2 root root 5074632 Aug 18 09:35 /usr/bin/python3.7
-rwxr-xr-x 2 root root 5074632 Aug 18 09:35 /usr/bin/python3.7m
-rwxr-xr-x 1 root root 5391992 Sep 26 00:51 /usr/bin/python3.8
lrwxrwxrwx 1 root root 16 Mar 23 2016 /usr/bin/python3-config -> python3.5-config
lrwxrwxrwx 1 root root 10 Mar 23 2016 /usr/bin/python3m -> python3.5m
lrwxrwxrwx 1 root root 17 Mar 23 2016 /usr/bin/python3m-config -> python3.5m-config
lrwxrwxrwx 1 root root 16 Nov 24 2017 /usr/bin/python-config -> python2.7-config
lrwxrwxrwx 1 root root 58 Mar 25 2016 /usr/bin/pythontex -> ../share/texlive/texmf-dist/scripts/pythontex/pythontex.py
-rwxr-xr-x 1 root root 306 Mar 25 2016 /usr/bin/pythontex3回答 2
Stack Overflow用户
发布于 2020-10-05 17:20:41
我为python定义了一个别名！这就是为什么常规逻辑在这里不适用的原因！
Stack Overflow用户
发布于 2020-10-05 15:19:53
通过这种方式，我将py3.8设为默认值。
export py=`which python`
sudo rm $py
export py38=`which python3.8`
sudo ln -s $py38 $py页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/64203820
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