用pythom、mypysql链接数据库链接不成功求大佬指点

import pymysql
db = pymysql.connect('localhost','root','mkfmkf','mrsoft')
cursor = db.cursor()
cursor.execute('SELECT VERSION')
date = cursor.fetchone()
print('Date:%s'%date)
db.close




Python 3.6.6 (v3.6.6:4cf1f54eb7, Jun 27 2018, 03:37:03) [MSC v.1900 64 bit (AMD64)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> 
===================== RESTART: D:\Python\数据库练习\chage.py =====================
Traceback (most recent call last):
  File "D:\Python\数据库练习\chage.py", line 2, in <module>
    db = pymysql.connect('localhost','root','mkfmkf','mrsoft')
TypeError: __init__() takes 1 positional argument but 5 were given
>>> 

报错的是第二行，建议改成这种格式

db = pymysql.connect(host="localhost", user="root", password="xxx", database="xxxx")
 

self.connect = pymysql.connect(
            host = '127.0.0.1',
            port = 3306,
            user = 'root',
            password = '123456',
            database = 'eleven',
            charset = 'utf8',
        )

可以改成上图代码，个人有成功案例，供参考：https://mp.weixin.qq.com/s/ZpprSEpyzRTk2RalGeJRjQ

感谢大家 原因找到了。

缺少一个数据库

运行cmd pip install cryptography