1 1 import pymysql 2 2 3 3 db = pymysql.connect(host='localhost', user='root', password='123456', database='jddj',port=3306) 4 4 cursor = db.cursor() 5 5 6 6 # 方式1：Python的字符串格式化，String类型需要加上单引号 7 7 upc = '6971286372249' 8 8 sql = "SELECT * FROM product WHERE upc='%s'" % upc 9 9 cursor.execute(sql) 10 10 11 11 # 方式2：pymysql里excute自带的字符串拼接，不需要加上单引号 12 12 sql = "SELECT * FROM product WHERE upc=%s" 13 13 cursor.execute(sql, '6971286372249') 14 14 15 15 # 取出查询数据 16 16 data = cursor.fetchall() 17 17 18 18 db.close()