fetchall()将结果放在二维数组里面，每一行的结果在元组里面
1 import pymysql 2 def export(table_name): 3 conn =pymysql.connect(host = ‘118.24.3.40‘, 4 user = ‘jxz‘,password=‘123456‘, 5 db=‘jxz‘,port=3306,charset = ‘utf8‘) 6 cur = conn.cursor() 7 cur.execute(‘select * from %s‘%table_name) 8 print(cur.fetchall()) 9 export(‘app_student‘)
想返回字典格式，只需要在建立游标的时候加个参数，cursor=pymysql.cursors.DictCursor。这样每行返回的值放在字典里面，然后整体放在一个list里面。
1 import pymysql 2 def export(table_name): 3 conn =pymysql.connect(host = ‘118.24.3.40‘, 4 user = ‘jxz‘,password=‘123456‘, 5 db=‘jxz‘,port=3306,charset = ‘utf8‘) 6 cur = conn.cursor(cursor=pymysql.cursors.DictCursor) 7 cur.execute(‘select * from %s‘%table_name) 8 print(cur.fetchall()) 9 export(‘app_student‘)
python操作mysql数据-执行语句返回值直接返回字典类型
原文：https://www.cnblogs.com/once-again/p/9824381.html