Python 当我正在更新的属性是用户输入时，如何编写update语句？

我不知道用变量“new_spec”更新记录的语法

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execute

接受两个参数—一个SQL字符串和一个参数元组：

    print("Your update is as shown: \t")

    query2 = c.execute('SELECT fname, lname, specification FROM Nurses'
                 'WHERE lname LIKE ?', (nurse_lname,))    

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您正在传递一个参数元组，它被解压到占位符中。尝试

c.execute（'UPDATE Nurses SET specification=？WHERE lname LIKE？'，（new_spec，nurse_lname））

    print("Your update is as shown: \t")

    query2 = c.execute('SELECT fname, lname, specification FROM Nurses'
                 'WHERE lname LIKE ?', (nurse_lname,))    

c.execute('UPDATE Nurses SET specification = %s WHERE lname LIKE %s', 
          (new_spec, nurse_lname))