我是靠谱客的博主 合适网络,最近开发中收集的这篇文章主要介绍python按月分表-coding:utf-8-,觉得挺不错的,现在分享给大家,希望可以做个参考。

概述

#!/usr/bin/env python

-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 servernERROR(%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)

转载于:https://blog.51cto.com/chenwenming/2119484

最后

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