python大量造数据

# -*- coding: utf-8 -*-
# date=2020/1/21
import time
import pymysql
import pymysql.cursors

# 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
# port 必须是数字不能为字符串
connection = pymysql.connect(host='127.0.0.01', user='root', password='root', db='test', port=3306, charset='utf8')
count = 3
num = 1000000

try:
    # 获取一个游标
    with connection.cursor() as cursor:
        start = time.time()
        for i in range(count):
            sql_1 = "INSERT INTO t_teacher (name, age) VALUES "
            sql_2 = ""
            for i in range(num):
                sql_2 += "( 'zhang', 2 ),"
            sql = sql_1 + sql_2
            cursor.execute(sql[0:len(sql) - 1])
            connection.commit()
        end = time.time()
    print("已插入数据%sw" % (count * num / 10000), "用时%ss" % (end - start))
finally:
    connection.close()