python mysql crud operation

import mysql.connector as connector
class dbhelper:
    def __init__(self):
        self.con=connector.connect(host='localhost',
                      port='3306',
                      user='root',
                      password='12345',
                      database='login')
        query='create table if not exists user(userID int primary key,password varchar(12),phoneNo varchar(12))'
        cur=self.con.cursor()
        cur.execute(query)
        print("created")    
        #insert data
    def insert_table(self):
        query="insert into user(userID,password,phoneNo) VALUES(%s,%s,%s)"
        b=(1,"arslan","3474253635")
        cur=self.con.cursor()
        cur.execute(query,b)
        self.con.commit()
        print("save the db")
        #fetcg data
    def fetch_data(self):
        query="select * from user"
        cur=self.con.cursor()
        cur.execute(query)
        for row in cur:
            print(row)
    def delete_data(self,userID):
        query="delete from user where userID=1"
        print(query)
        cur=self.con.cursor()
        cur.execute(query)
        print("deleted")
helper=dbhelper()
#helper.insert_table()
helper.delete_data(1)
helper.fetch_data()