Ubuntu 安装python3.8.0b4

使用命令：

apt?install?python3.8

查看python的软连接：

>>>?ls?-l?/usr/bin?|?grep?python

-rwxr-xr-x?1?root???root????????1056?Apr?16??2018?dh_python2
lrwxrwxrwx?1?root???root??????????23?Oct??8?01:39?pdb2.7?->?../lib/python2.7/pdb.py
lrwxrwxrwx?1?root???root??????????23?Oct??7?20:59?pdb3.6?->?../lib/python3.6/pdb.py
lrwxrwxrwx?1?root???root??????????23?Oct?29?00:14?pdb3.8?->?../lib/python3.8/pdb.py
lrwxrwxrwx?1?root???root??????????31?Oct?25??2018?py3versions?->?../share/python3/py3versions.py
lrwxrwxrwx?1?root???root???????????9?Apr?16??2018?python?->?python2.7
lrwxrwxrwx?1?root???root???????????9?Apr?16??2018?python2?->?python2.7
-rwxr-xr-x?1?root???root?????3641704?Oct??8?01:39?python2.7
lrwxrwxrwx?1?root???root??????????33?Oct??8?01:39?python2.7-config?->?x86_64-linux-gnu-python2.7-config
lrwxrwxrwx?1?root???root??????????16?Apr?16??2018?python2-config?->?python2.7-config
lrwxrwxrwx?1?root???root???????????9?Oct?25??2018?python3?->?python3.6
-rwxr-xr-x?2?root???root?????4526456?Oct??7?20:59?python3.6
-rwxr-xr-x?2?root???root?????4526456?Oct??7?20:59?python3.6m
-rwxr-xr-x?1?root???root?????5203488?Oct?29?00:14?python3.8
-rwxr-xr-x?1?root???root????????1018?Oct?29??2017?python3-jsondiff
-rwxr-xr-x?1?root???root????????3661?Oct?29??2017?python3-jsonpatch
-rwxr-xr-x?1?root???root????????1342?May??2??2016?python3-jsonpointer
-rwxr-xr-x?1?root???root?????????398?Nov?16??2017?python3-jsonschema
lrwxrwxrwx?1?root???root??????????10?Oct?25??2018?python3m?->?python3.6m
lrwxrwxrwx?1?root???root??????????16?Apr?16??2018?python-config?->?python2.7-config
lrwxrwxrwx?1?root???root??????????29?Apr?16??2018?pyversions?->?../share/python/pyversions.py
-rwxr-xr-x?1?root???root????????2971?Oct??8?01:39?x86_64-linux-gnu-python2.7-config
lrwxrwxrwx?1?root???root??????????33?Apr?16??2018?x86_64-linux-gnu-python-config?->?x86_64-linux-gnu-python2.7-config

删除python的软链接，指向python3.7：

rm?/usr/bin/python
ln?-s?/usr/bin/python3.7?/usr/bin/python

参考：https://www.jianshu.com/p/fe0b278b8916

（编辑：李大同）

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