MySQL backup python code

OS Import, Time, pymysql, the shutil 

from timer task apscheduler.schedulers.blocking # Import BlockingScheduler 


DEF getDatabaseNames (): 
    "" " 
    connected database 
    returns the specified database table all 
    " "" 
    Conn = pymysql.connect (= '10 .100 Host. 102.224 ', Port = 3316, DB =' INDEXDB ', = User' the root ', the passwd =' the root ') 
    CUR = conn.cursor () 
    cur.execute (' Show Tables; ') 
    Tables cur.fetchall = () 
    CUR .close () 
    conn.Close () 
    return tables 


DEF db_bf (path): 
    "" " 
    creating the storage path 
    and the backup database table specified in 
    " "" 
    path = path.strip () 
    path path.rstrip = ( "\\") 

    IF Not os.path.exists (path): # The system determines the presence of the path
        os.makedirs (path) #, does not exist, create 
        Tables getDatabaseNames = () 
        for Tables in Table: 
            the try: 
                TableName = Table [0] 
                # export DB 
                cmd = "% S -H -u the mysqldump -p% S% S% S>% S /% s.sql "% (.100.102.224 '10 ',' the root ',' INDEXDB ', TableName, Folder, TableName) 
                Print (cmd) 
                the os.system (cmd) 

            the except Exception AS E: 
                Print (E ) 
        return True 
    the else: 
        return False 


DEF mysql_rm (path, of TIMESTR): 
    "" " 
    under the directory to delete the backup files over a certain length of time 
    ." "" 
    # list all the backup directory 
    f = list (os.listdir(path))
    print(f)
    of TIMESTR = now_time [0:. 8] 
    # Set over time 
    Days =. 3 
    for I in F: 

        exit_time = I [0:. 8] 
        UPDATE_TIME = int (exit_time) Days + 
        # IF UPDATE_TIME <int (now_time) or exit_time == now_time : 
        # if the data exceeds a predetermined number of days delete the backup 
        IF UPDATE_TIME <int (now_time): 
            shutil.rmtree (I + path) 
            # with Open (Self .__ filerm_log, 'a') AS file_log: 
            # file_log.write ( " % s delete the backup file% s \ n-, "% (of TIMESTR [0:. 8], I)) 


# DEF hf_bf (path, DB): 
#" "" 
# restore the data backed up to the specified database 
# "" " 
# List = F (the os.listdir (path)) 
# 
# # for X in F:
Cmd = # "MySQL -p-U% S% S% S <S% / S%"% ( 'the root', 'the root', DB, path, F [0]) 
# Print (cmd) 
# the os.system (cmd) 


IF the __name__ == '__main__': 
    # create a backup storage path, 
    of TIMESTR the time.strftime = ( "the Y% m%% D% H% m% S", time.localtime (the time.time ())) 
    = Folder "mysql_data_bak /" of TIMESTR + 
    db_bf (Folder) 
    # restore a database backup 
    # hf_bf ( "mysql_data_bak / 20,191,028,114,943", 'ceshi') 
    Scheduler BlockingScheduler = () 
    # 6 will function, 7, 8, 11, December the third Friday of 1,2,3 operating point 
    # scheduler.add_job (db_bf, args = [ folder,], trigger = 'cron', month = '6-8,11-12', day = '3rd fri ', hour =' 0-3 ') 
    # 2019-12-30 00:00:00 As of 5:30 run every Monday through Friday morning
    # scheduler.add_job(db_bf,args=[folder,], trigger='cron', day_of_week='mon-fri', hour=5, minute=30, end_date='2019-12-31')
    # 每天14.39执行任务
    scheduler.add_job(db_bf, args=[folder, ], trigger='cron', hour=14, minute=39)
    try:
        scheduler.start()
    except (KeyboardInterrupt, SystemExit):
        pass