python使用MysqlDB连接mysql问题

安装mysqldb包，首先需要安装一下mysql-devel，问题报错如下：
[root@syncdb01 ~]# yum install -y mysql-devel
Loaded plugins: fastestmirror
base                                                                                                                                | 3.6 kB  00:00:00     
extras                                                                                                                              | 2.9 kB  00:00:00     
mysql-connectors-community                                                                                                          | 2.6 kB  00:00:00     
mysql-tools-community                                                                                                               | 2.6 kB  00:00:00     
mysql57-community-dmr                                                                                                               | 2.6 kB  00:00:00     
updates                                                                                                                             | 2.9 kB  00:00:00     
Loading mirror speeds from cached hostfile
 * base: mirrors.tuna.tsinghua.edu.cn
 * extras: mirrors.tuna.tsinghua.edu.cn
 * updates: mirrors.tuna.tsinghua.edu.cn
Resolving Dependencies
--> Running transaction check
---> Package mysql-community-devel.x86_64 0:5.7.40-1.el7 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

===========================================================================================================================================================
 Package                                    Arch                        Version                           Repository                                  Size
===========================================================================================================================================================
Installing:
 mysql-community-devel                      x86_64                      5.7.40-1.el7                      mysql57-community-dmr                      4.2 M

Transaction Summary
===========================================================================================================================================================
Install  1 Package

Total size: 4.2 M
Installed size: 24 M
Downloading packages:
warning: /var/cache/yum/x86_64/7/mysql57-community-dmr/packages/mysql-community-devel-5.7.40-1.el7.x86_64.rpm: Header V4 RSA/SHA256 Signature, key ID 3a79bd29: NOKEY
Retrieving key from file:/etc/pki/rpm-gpg/RPM-GPG-KEY-mysql


The GPG keys listed for the "MySQL 5.7 Community Server Development Milestone Release" repository are already installed but they are not correct for this package.
Check that the correct key URLs are configured for this repository.


 Failing package is: mysql-community-devel-5.7.40-1.el7.x86_64
 GPG Keys are configured as: file:/etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
解决办法：
1	rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2022
没事记录一下。