python3的连接数据库代码:
我用的是本地服务器的mysql来进行连接。
# encoding=utf-8 import pymysql # db= pymysql.connect( # host='root', # passwd='#####', # db="excel", # charset='utf8') db = pymysql.connect("localhost","#####","######",charset='utf8')#里面分别是用户名和密码 cursor = db.cursor() cursor.execute("use excel") try: sql = "select * from test" cursor.execute(sql) data = cursor.fetchall() for re in data: num = re[0] name = re[1] sex = re[2] print(num,name,sex) except: print("unable to get data") try: sql = "insert into test values(1613200012,'yang','man')" cursor.execute(sql) db.commit() except: db.rollback() db.close();