有一个TypeError:在插入mysql表时，execute()最多接受3个参数(给定6个)

我已经在python中制作了一个webscraper，我现在正试图使其输出将我抓取的数据输出到mysqldb中，但是我一直收到此错误，而且我不知道如何解决它.这就是我的错误得到

I have made a webscraper in python and I am now trying to get it to output the data i have scraped into a mysqldb but I keep getting this error and I don't know how to fix it.this is the error I get

 File "C:/Users/owner/Downloads/Scrape (2).py", line 16, in <module>
    cursor.execute("INSERT INTO london10dayforecast (Day,Condition,High,Low,) VALUES (?,?,?,?)", str(var1),str(var2),str(var3),str(var4))
TypeError: execute() takes at most 3 arguments (6 given)

Process finished with exit code 1

这是代码:

import requests
import MySQLdb

r = requests.get("http://api.wunderground.com/api/be6eb0a1b404829b/forecast10day/q/UK/London.json")
data = r.json()

for day in data['forecast']['simpleforecast']['forecastday']:
var1= day['date']['weekday'] + ":"
var2= "Conditions: ", day['conditions']
var3= "High: ", day['high']['celsius'] + "'C"
var4= "Low: ", day['low']['celsius'] + "'C", '\n'

db = MySQLdb.connect("127.0.0.1","root","","weathersystem" )
cursor = db.cursor()

cursor.execute("INSERT INTO london10dayforecast (Day,Condition,High,Low,) VALUES (?,?,?,?)", str(var1),str(var2),str(var3),str(var4))
db.commit()
db.close()

``