python按月分表，,#!/usr/bin

-coding:utf-8-

import time
from datetime import datetime
import calendar
import MySQLdb
import sys

class GetDayMonth(object):

def getLastDayOfLastMonth(self,step):    d = datetime.now()    year = d.year    month = d.month    if month == 1:        month = 12        year -= 1    else:        month -= step    days = calendar.monthrange(year, month)[1]    return datetime(year, month, days).strftime(‘%Y-%m-%d‘)def getFirstDayOfLastMonth(self,step):    d = datetime.now()    year = d.year    month = d.month    if month == 1:        month = 12        year -= 1    else:        month -= step    return datetime(year, month, 1).strftime(‘%Y-%m-%d‘)def getLastMonth(self,step):    d = datetime.now()    year = d.year    month = d.month    if month == 1:        month = 12        year -= 1    else:        month -= step    return datetime(year, month, 1).strftime(‘%Y%m‘)

class MysqlExe(object):
def init(self,host,port,user,passwd,db,charset=‘utf8‘):
try:
self.conn = MySQLdb.connect(host,user,passwd,db,int(port))
except MySQLdb.Error as e:
errormsg = ‘Cannot connect to server\nERROR(%s):%s‘ % (e.args[0],e.args[1])
print errormsg
exit(2)
self.cursor = self.conn.cursor()

def Creat_table(self,sql):    try:        self.cursor.execute(sql)        self.conn.commit()    except:        self.conn.rollback()        print "sql execute error"        exit(2)def __del__(self):    self.conn.close()    self.cursor.close()

if name == ‘main‘:

d = GetDayMonth()table_name = sys.argv[1]first_day_month = d.getFirstDayOfLastMonth(1) last_day_month = d.getLastDayOfLastMonth(1)last_3day_month = d.getLastDayOfLastMonth(3)last_month = d.getLastMonth(1)mysql_exec = MysqlExe(‘127.0.0.1‘,3306,‘root‘,‘XXXX‘,‘guanba_data‘)sql_create = "create table guanba_data.%s_%s  like guanba_data.%s"%(table_name,last_month,table_name)sql_insert = "insert into guanba_data.%s_%s select * from guanba_data.%s where create_time >= unix_timestamp(‘%s 00:00:00‘) and create_time <= unix_timestamp(‘%s 23:59:59‘)"%(table_name,last_month,table_name,first_day_month,last_day_month)sql_del = "delete from guanba_data.%s where  create_time <= unix_timestamp(‘%s 23:59:59‘)"%(table_name,last_3day_month)mysql_exec.Creat_table(sql_create)mysql_exec.Creat_table(sql_insert)mysql_exec.Creat_table(sql_del)

python按月分表