Python向mysql数据库插入数据

Posted 2021-06-15 。往心。

一、向表tcolor中插入数据的主要流程如下：

 

import datetime

import pymysql.cursors

connection = pymysql.connect(host=\'localhost\', port=3306, user=\'root\', password=\'11111\', db=\'users\', charset=\'utf8\', cursorclass=pymysql.cursors.DictCursor)

Url = "http://www.baidu.com"
Time = datetime.datetime.now()  # 系统当前时刻

sql = "insert into color(url, time) values(\'%s\',\'%s\')" % (Url,Time)

try:
    cursor = connection.cursor()
    cursor.execute(sql)
    connection.commit()
except Exception:
    print("查询失败！！！")

cursor.close()
connection.close()


二、Python向mysql逐条插入数据一般有两种形式：

sql = "insert into color(url, time) values(\'%s\',\'%s\')" % (Url，Time)
cursor = db.cursor()
try:
cursor.execute(sql)
db.commit() #提交到数据库执行，一定要记提交哦
except Exception,e:
db.rollback() #发生错误时回滚
print e
cursor.close()

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sql = "insert into color(url, time) values(%s,%s)" #注意此处与前一种形式的不同
par = (Url，Time)
cursor = db.cursor()
try:
cursor.execute(sql，par)
db.commit() #提交到数据库执行，一定要记提交哦
except Exception,e:
db.rollback() #发生错误时回滚
print e
cursor.close()