pymysql连接数据库报错TypeError: __init__() takes 1 positional argument but 5 positional arguments

pymysql连接数据库报错TypeError: init() takes 1 positional argument but 5 positional arguments
pymysql在1.0无法使用 db = pymysql.connect("localhost","root","root","testdb" )

需要修改为 db = pymysql.connect(host="localhost", user="root", password="root", database="testdb")