mysql.connector.errors.InternalError: Unread result found error while using "DELETE"

如何解决mysql.connector.errors.InternalError: Unread result found error while using "DELETE"

我目前正在使用 MysqL 学习 python 连接，这些是制作表格的行

    import MysqL.connector
    mydb=MysqL.connector.connect(host="localhost",user="root",password="root")
    #CREATING DATABASE AND TABLE
    mycursor=mydb.cursor()
    mycursor.execute("create database if not exists store")
    mycursor.execute("use store")
    mycursor.execute("create table if not exists signup(username varchar(20),password varchar(20))")
    mycursor.execute("create table if not exists buynewbooks(nameofbook varchar(30))")
    mycursor.execute("create table if not exists Feedback(rating varchar(11))")

这是我从中得到错误的代码块：

    #delete acc 
        elif  ch==3:
                mycursor.execute("select username from signup")
                u=str(input("enter your registerd USERNAME"))   
                p=str(input("enter your account password"))
                sql = "DELETE FROM signup WHERE username = u AND password = p" 
                mycursor.execute(sql)
                mydb.commit
                print("your account has been removed")

这是我得到的错误：

Traceback (most recent call last):
File "C:/Users/win10/.spyder-py3/kj7.py",line 34,in <module>
mycursor.execute(sql)
File "C:\Users\win10\AppData\Local\Programs\Python\python38-32\lib\site-packages\MysqL\connector\cursor.py",line 547,in execute
self._connection.handle_unread_result()
File "C:\Users\win10\AppData\Local\Programs\Python\python38-32\lib\site-packages\MysqL\connector\connection.py",line 1286,in handle_unread_result
raise errors.InternalError("Unread result found")
MysqL.connector.errors.InternalError: Unread result found

请告诉我是否应该提供更多的代码部分。