在linux服务器上自动备份数据库

脚本如下，没有任何问题：

# !/usr/bin/python
import os
import time
import datetime
import pipes
import glob

DB_HOST = '192.168.44.158'
DB_USER = 'root'
DB_USER_PASSWORD = 'MyNewPass4!'
DB_NAME = 'hanwo'
BACKUP_PATH = '/mnt/dbbackup/mysql/'
DATETIME = time.strftime('%Y%m%d-%H%M%S')
TODAYBACKUPPATH = BACKUP_PATH + '/' + DATETIME

try:
    os.stat(TODAYBACKUPPATH)
except:
    os.mkdir(TODAYBACKUPPATH)
print("checking for databases names file.")
if os.path.exists(DB_NAME):
    file1 = open(DB_NAME)
    multi = 1
    print("Databases file found...")
    print("Starting backup of all listed in file" + DB_NAME)
else:
    print("Databases file not found...")
    print("Starting backup of database" + DB_NAME)
    multi = 0

if multi:
    in_file = open(DB_NAME, "r")
    flength = len(in_file.readlines())
    in_file.close()
    p = 1
    dbfile = open(DB_NAME, "r")

    while p <= flength:
        db = dbfile.readline()
        db = db[:-1]
        dumpcmd = "mysqldump -h " + DB_HOST + " -u " + DB_USER + " -p" + DB_USER_PASSWORD + " " + db + " > " + pipes.qute(
            TODAYBACKUPPATH) + "/" + db + ".sql"
        os.system(dumpcmd)
        gzipcmd = "gzip" + pipes.quote(TODAYBACKUPPATH) + "/" + db + ".sql"
        os.system(gzipcmd)
        p = p + 1
    dbfile.close()
else:
    db = DB_NAME
    dumpcmd = "mysqldump -h " + DB_HOST + " -u " + DB_USER + " -p" + DB_USER_PASSWORD + " " + db + " > " + pipes.quote(
        TODAYBACKUPPATH) + "/" + db + ".sql"
    os.system(dumpcmd)
    gzipcmd = " gzip " + pipes.quote(TODAYBACKUPPATH) + "/" + db + ".sql"
    os.system(gzipcmd)
path_file_number = glob.glob(BACKUP_PATH)
print(len(path_file_number))
print("")
print("Backup script completed")
print("Your backups have been created in '" + TODAYBACKUPPATH + "' directort")