1. Install pip based on python

[root@mysql ~]# yum -y install python-pip python-devel
[root@mysql ~]# crul https://bootstrap.pypa.io/get-pip.py -o get-pip.py
[root@mysql ~]# python get-pip.py           # Don't worry if yellow words or similar words appear in this command. It's not an error. It's just a warning that Python version is lower than 2.7

After installing Python, you think you can install mycli by running pip install mycli directly

[root@mysql ~]# pip install mycli          # If you enter this command directly, the following error will be reported (some are omitted)
 Found existing installation: configobj 4.7.2
ERROR: Cannot uninstall 'configobj'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.

2. Then, if an error is reported, we need to change the installation command to:

[root@mysql ~]# pip install --ignore-installed mycli

There will be a high probability of successful installation, but things are not so simple. Just after the execution of the installation of mycli, it shows that the installation is successful. When I use mycli-uroot-p123 to log in to the database, I am sorry to report an error again (crying, crying)

[root@mysql ~]# mycli -uroot -p123
Traceback (most recent call last):
  File "/usr/bin/mycli", line 5, in <module>
    from mycli.main import cli
  File "/usr/lib/python2.7/site-packages/mycli/main.py", line 44, in <module>
    from .config import (write_default_config, get_mylogin_cnf_path,
  File "/usr/lib/python2.7/site-packages/mycli/config.py", line 28
    print(message, file=sys.stderr)
                       ^
SyntaxError: invalid syntax

This error report is caused by the lack of some Python dependency packages. You can install it through yum

[root@mysql ~]# yum -y install gcc libffi-devel python-devel openssl-devel &&  pip install mycli==1.8.1

I've been busy working for a long time. This meeting must be right, hehe
3. Confident login

[root@mysql ~]# mycli -uroot -p123        # Here are the tips
Version: 1.8.1
Chat: https://gitter.im/dbcli/mycli
Mail: https://groups.google.com/forum/#!forum/mycli-users
Home: http://mycli.net
Thanks to the contributor - Nathan Taggart

You can see the commands you can select by pressing up and down in the figure below, and you can use tab to complete them