centos7安装python3（centos7安装软件包）

系统默认安装了python2，现需要python3，可以采用如下命令安装。

默认可以上网。

╰─  sudo yum install python3.x86_64 
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Resolving Dependencies
--> Running transaction check
---> Package python3.x86_64 0:3.6.8-19.el7_9 will be installed
--> Processing Dependency: python3-libs(x86-64) = 3.6.8-19.el7_9 for package: python3-3.6.8-19.el7_9.x86_64
--> Processing Dependency: python3-setuptools for package: python3-3.6.8-19.el7_9.x86_64
--> Processing Dependency: python3-pip for package: python3-3.6.8-19.el7_9.x86_64
--> Processing Dependency: libpython3.6m.so.1.0()(64bit) for package: python3-3.6.8-19.el7_9.x86_64
--> Running transaction check
---> Package python3-libs.x86_64 0:3.6.8-19.el7_9 will be installed
---> Package python3-pip.noarch 0:9.0.3-8.el7 will be installed
---> Package python3-setuptools.noarch 0:39.2.0-10.el7 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================
 Package                  Arch         Version              Repository     Size
================================================================================
Installing:
 python3                  x86_64       3.6.8-19.el7_9       updates        70 k
Installing for dependencies:
 python3-libs             x86_64       3.6.8-19.el7_9       updates       6.9 M
 python3-pip              noarch       9.0.3-8.el7          base          1.6 M
 python3-setuptools       noarch       39.2.0-10.el7        base          629 k

Transaction Summary
================================================================================
Install  1 Package (+3 Dependent packages)

Total download size: 9.3 M
Installed size: 47 M
Is this ok [y/d/N]: y
Downloading packages:
python3-pip-9.0.3-8.el7.noarch.rpm                       |    0 B     00:30 ... 
python3-setuptools-39.2.0-10.el7.noarch.rpm              |    0 B     00:30 ... 
python3-libs-3.6.8-19.el7_9.x86_64.rpm                   |    0 B     00:30 ... 
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(1/4): python3-3.6.8-19.el7_9.x86_64.rpm                   |  70 kB   00:00     
(2/4): python3-setuptools-39.2.0-10.el7.noarch.rpm         | 629 kB   00:00     
(3/4): python3-pip-9.0.3-8.el7.noarch.rpm                  | 1.6 MB   00:01     
(4/4): python3-libs-3.6.8-19.el7_9.x86_64.rpm              | 6.9 MB   00:02     
--------------------------------------------------------------------------------
Total                                              3.3 MB/s | 9.3 MB  00:02     
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : python3-setuptools-39.2.0-10.el7.noarch                      1/4 
  Installing : python3-libs-3.6.8-19.el7_9.x86_64                           2/4 
  Installing : python3-3.6.8-19.el7_9.x86_64                                3/4 
  Installing : python3-pip-9.0.3-8.el7.noarch                               4/4 
  Verifying  : python3-pip-9.0.3-8.el7.noarch                               1/4 
  Verifying  : python3-3.6.8-19.el7_9.x86_64                                2/4 
  Verifying  : python3-setuptools-39.2.0-10.el7.noarch                      3/4 
  Verifying  : python3-libs-3.6.8-19.el7_9.x86_64                           4/4 

Installed:
  python3.x86_64 0:3.6.8-19.el7_9                                               

Dependency Installed:
  python3-libs.x86_64 0:3.6.8-19.el7_9        python3-pip.noarch 0:9.0.3-8.el7  
  python3-setuptools.noarch 0:39.2.0-10.el7  

Complete!

╰─  python3
Python 3.6.8 (default, Jun 20 2023, 11:53:23) 
[GCC 4.8.5 20150623 (Red Hat 4.8.5-44)] on linux
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