import pymysql#host 数据库服务IP地址
#user 数据库连接用户名
#password 数据库连接密码
#db 连接数据库名称
#port 数据库服务端口号
#charset 编码方式
#autocommit 自动提交，sql执行后直接自动提交，无需再次手动进行执行
conn=pymysql.Connect(host='host',user='user',password='password',db='db', port=3306, charset='utf8',autocommit=True) #数据库连接
cur=conn.cursor() #建立游标
cur.execute('select * from table')  #执行sql
#conn.commit() #手动提交sql执行结果
#cur.fetchone() #单条获取sql执行结果
cur.fetchall() #获取所有sql执行结果
#cur.fetchmany(10) #获取指定的10条执行结果
cur.close() #关闭游标
conn.close() #关闭数据库

import pymysql
#建立连接
conn=pymysql.connect(host='IP',user='jxz',password='123456',db='jxz',port=3306,charset='utf8',autocommit=True)
cur =conn.cursor() #建立游标
sql="insert into acc_info VALUES(7,'dd3',123,1);"
cur.execute(sql)
print(cur.fetchall())
cur.close()
conn.close()C:\Users\zhaow\AppData\Local\Programs\Python\Python37\python.exe D:/study/python/test/YY.PY.py
()  #返回的空元组

import pymysql
#建立连接
conn=pymysql.connect(host='IP',user='jxz',password='123456',db='jxz',port=3306,charset='utf8',autocommit=True)
cur =conn.cursor() #建立游标
sql="SELECT * from acc_info;"
cur.execute(sql)
print(cur.fetchall())
cur.close()
conn.close()C:\Users\zhaow\AppData\Local\Programs\Python\Python37\python.exe D:/study/python/test/YY.PY.py
((1, '55', 0, 0), (3, 'dd', 0, 0), (4, 'dd', 0, 0), (5, 'dd', 0, 0), (6, 'dd3', 0, 0), (7, 'dd3', 123, 1))  #返回的元组

import pymysql
#建立连接
conn=pymysql.connect(host='IP',user='jxz',password='123456',db='jxz',port=3306,charset='utf8',autocommit=True)
cur =conn.cursor() #建立游标
sql="UPDATE acc_info set name='xiug' where id=5;"
cur.execute(sql)
print(cur.fetchall())
cur.close()
conn.close()C:\Users\zhaow\AppData\Local\Programs\Python\Python37\python.exe D:/study/python/test/YY.PY.py
()  #返回空元组

import pymysql
#建立连接
conn=pymysql.connect(host='IP',user='jxz',password='123456',db='jxz',port=3306,charset='utf8',autocommit=True)
cur =conn.cursor() #建立游标
sql="DELETE from acc_info where id=3"
cur.execute(sql)
print(cur.fetchall())
cur.close()
conn.close()C:\Users\zhaow\AppData\Local\Programs\Python\Python37\python.exe D:/study/python/test/YY.PY.py
()