对python插入数据库和生成插入sql的示例讲解

如下所示：

#-*- encoding:utf-8 -*-
import csv
import sys,os
import pymysql 
 
def read_csv(filename):
 '''
 读取csv文件
 '''
 data = []
 with open(filename) as f:
 f_csv = csv.reader(f)
 headers = next(f_csv)
 #数据格式[1111,22222,1111,1111,.....]
 for row in f_csv:
 # Process row
 field1=row[0]
 data.append(row)
 print headers
 return data
 
def load_data():
 '''
 插入数据库
 '''
 filename = sys.argv[1]
 try:
 #获取一个数据库连接，注意如果是UTF-8类型的，需要制定数据库
 conn=pymysql.connect(host='192.168.1.161',user='naliworld',passwd='password!',db='search',port=3306,charset='utf8')
 cur=conn.cursor()#获取一个游标
 data=read_csv(filename)
 for row in data:
 # Process row
 field1=row[0]
 sql='''insert into search.tb_text_uid_list(appId,type,uid,creator,createTime) values({},{},{},{},{}) '''.format(3,1,field1,'\'admin\'','\'2018-08-14 13:44:09\'')
 print sql
 cur.execute(sql)
 cur.close()#关闭游标
 conn.commit()
 conn.close()#释放数据库资源
 except Exception as e :print(e)
 
def get_sql():
 '''
 插入数据库生成插入sql
 '''
 sql_list = []
 filename = sys.argv[1]
 data=read_csv(filename)
 for row in data:
 # Process row
 field1=row[0]
 sql='''replace into search.tb_text_uid_list(appId,type,uid,creator,createTime) values({},{},{},{},{}) '''.format(3,1,field1,'\'admin\'','\'2018-08-14 13:44:09\'')
 sql_list.append(sql)
 file_object = open('sql.txt', 'w')
 file_object.writelines([line+';\n' for line in sql_list])
 file_object.close( )
 
if __name__ == "__main__":
 get_sql()
 
 

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