python-- installation error mysqlclient

     | ████████████████████████████████ | 90 kB 9.5 MB / s 

    ERROR: Command errored out with exit status 1:

     command: /usr/local/python3/bin/python3.7 -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-sgsfsiw5/mysqlclient/setup.py'"'"'; __file__='"'"'/tmp/pip-install-sgsfsiw5/mysqlclient/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-install-sgsfsiw5/mysqlclient/pip-egg-info

         cwd: /tmp/pip-install-sgsfsiw5/mysqlclient/

    Complete output (10 lines):

    / Bin / sh: mysql_config: command not found

    Traceback (most recent call last):

      File "<string>", line 1, in <module>

      File "/tmp/pip-install-sgsfsiw5/mysqlclient/setup.py", line 18, in <module>

        metadata, options = get_config()

      File "/tmp/pip-install-sgsfsiw5/mysqlclient/setup_posix.py", line 53, in get_config

        libs = mysql_config("libs_r")

      File "/tmp/pip-install-sgsfsiw5/mysqlclient/setup_posix.py", line 28, in mysql_config

        raise EnvironmentError("%s not found" % (mysql_config.path,))

    OSError: mysql_config not found

    ----------------------------------------

ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

The following three commands are sequentially performed:
 # . 1, the install yum Python-devel 
# 2, the install MySQL-devel yum 
# . 3, the install GCC yum