python 判断更新插入数据库

#-*-coding:utf8-*- 2 #此处调试代码... 3 import sys 4 import os 5 import MySQLdb 6 import datetime 7 path1 = (os.getcwd()).split(r‘\test‘)[0] 8 sys.path.append(path1+‘\Shop_site_crawler‘) 9 from zsl_spider_lib import get_u_sql,get_s_sql,get_i_sql 10 import time 11 try: 12 conn=MySQLdb.connect(host=‘localhost‘,user=‘root‘,passwd=‘root‘,charset=‘utf8‘) 13 conn.select_db(‘scrapy‘) 14 except: 15 conn=MySQLdb.connect(host=‘rds.com‘,user=‘scrapy‘,passwd=‘passwd‘,charset=‘utf8‘) 16 conn.select_db(‘scrapy‘) 17 print ‘task build start :‘,datetime.datetime.now() 18 19 #----------------分割线------------------- 20 table = ‘shops‘ 21 curDate = time.strftime("%Y-%m-%d") 22 i = {} 23 i[‘uid‘] = 1314520 24 i[‘shop_uri‘] = ‘url‘ 25 i[‘shop_name‘] = ‘name‘ 26 i[‘nick‘] = ‘nick‘ 27 i[‘brand‘] = ‘brand‘ 28 i[‘platform‘] = 0 29 i[‘addtime‘] = time.strftime("%Y-%m-%d %H:%M:%S") 30 i[‘the_date‘] = time.strftime("%Y-%m-%d") 31 32 33 db = conn.cursor()#创建实例 34 conds = {} 35 conds[‘shop_name‘] = i[‘shop_name‘] 36 conds[‘nick‘] = i[‘nick‘] 37 conds[‘the_date‘] = curDate 38 39 keys = [‘count(1)‘] 40 41 insert_sql = get_i_sql(table,i) 42 select_sql = get_s_sql(table,keys,conds) 43 update_sql = get_u_sql(table,i,conds) 44 45 db.execute(select_sql)#操作数据库 46 res = db.fetchone() 47 if res[0]: 48 db.execute(update_sql) 49 print ‘----update reday!‘ 50 else: 51 db.execute(insert_sql) 52 print ‘----insert reday!‘ 53 54 conn.commit() 55 db.close() 56 conn.close()

 

python 判断更新插入数据库

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