def set_mysql_connection(host='<STR_LIT:localhost>', user='<STR_LIT>', passwd='<STR_LIT>', db='<STR_LIT>',<EOL>charset='<STR_LIT:utf8>'):
connection_string = '<STR_LIT>'.format(<EOL>host=host,<EOL>user=user,<EOL>passwd=passwd,<EOL>db=db,<EOL>charset=charset<EOL>)<EOL>set_connection(connection_string)<EOL>return connection_string<EOL>
Method to set a MySQL connection

    :param host: MySQL database host
    :param user: MySQL database user
    :param passwd: MySQL database password
    :param db: MySQL database name
    :param charset: MySQL database charater set
    :return: None