pymysql的基本應用

import pymysql# 增長，刪，該# conn = pymysql.connect(host="localhost",user='root',password='',database="db666")# cursor = conn.cursor()# sql = "insert into userinfo(username,password) values('root','123123')"# 受影響的行數# r = cursor.execute(sql)# #  ******# conn.commit()# cursor.close()# conn.close()# conn = pymysql.connect(host="localhost",user='root',password='',database="db666")# cursor = conn.cursor()# # sql = "insert into userinfo(username,password) values(%s,%s)"# # cursor.execute(sql,(user,pwd,))## sql = "insert into userinfo(username,password) values(%s,%s)"# # 受影響的行數# r = cursor.executemany(sql,[('egon','sb'),('laoyao','BS')])# #  ******# conn.commit()# cursor.close()# conn.close()# 查# conn = pymysql.connect(host="localhost",user='root',password='',database="db666")# cursor = conn.cursor(cursor=pymysql.cursors.DictCursor)# sql = "select * from userinfo"# cursor.execute(sql)# cursor.scroll(1,mode='relative')  # 相對當前位置移動# cursor.scroll(2,mode='absolute') # 相對絕對位置移動# result = cursor.fetchone()# print(result)# result = cursor.fetchone()# print(result)# result = cursor.fetchone()# print(result)# result = cursor.fetchall()# print(result)# result = cursor.fetchmany(4)# print(result)# cursor.close()# conn.close()# 新插入數據的自增ID: cursor.lastrowid# import pymysql## conn = pymysql.connect(host="localhost",user='root',password='',database="db666")# cursor = conn.cursor()# sql = "insert into userinfo(username,password) values('asdfasdf','123123')"# cursor.execute(sql)# conn.commit()# print(cursor.lastrowid)# cursor.close()# conn.close()