Question

我正在创建一个程序，人们会根据用户输入和预定义值来猜测某人的身份。

class myPeople(object):

`def __init__(self, name, age, gender):`
`self.name = name`
`self.age = age`
`self.gender = gender`

name=input("What is your name?\n")

age=input("What is your age?\n")

gender=input("What is your gender?\n")

smith = myPeople(name="smith", age="104", gender="female")

john = myPeople(name="john", age="14", gender="male")

我想将用户输入与预先分配给“smith”和“john”的值进行比较。我以为我能做到：

if smith.myPeople is True:

   `print("You are Mr. Smith")`

elif john.myPeople is True:

   `print("You are Mr. John")`

我收到错误AttributeError：type object'myPeople'没有属性'smith'

此外，我不确定，如果声明“是真的”将起作用。在此先感谢您的帮助。

Answer 1

您可以customize your class添加comparison method, in this case __eq__。然后你可以检查一下类实例是否相等。

class myPeople(object):
    def __init__(self, name, age, gender):
        self.name = name
        self.age = age
        self.gender = gender
    def __eq__(self, other):
        return (self.name == other.name and
                self.age == other.age and
                self.gender == other.gender)

smith = myPeople(name="smith", age="104", gender="female")
john = myPeople(name="john", age="14", gender="male")

>>> smith == john
False
>>> smith == smith
True
>>> john == smith
False
>>> john == john
True
>>>

使用用户的响应创建另一个实例然后进行比较。

>>> name = 'smith'
>>> age = '104'
>>> gender = 'female'
>>> foo = myPeople(name = name, age = age, gender = gender)
>>> foo == smith
True
>>> foo == john
False
>>>

Python - 将用户输入与类对象实例进行比较

1 个答案: