Question

下面是我以崇高的文字执行的代码段

class Employee:
    def __init__(self, first, last):
        self.first = first
        self.last = last

        @property
        def email(self):
            return '{}.{}@email.com'.format(self.first, self.last)

            @property
            def fullname(self):
                return '{} {}'.format(self.first, self.last)

                emp1 = Employee('Aquib', 'Javed')

                emp1.email()
                emp1.fullname()
                print(emp1.fullname)

Answer 1

您的代码没有正确缩进。

class Employee:
 def __init__(self, first, last):
    self.first = first
    self.last = last

 @property
 def email(self):   #same level indentation as __init__() or it'll have scope under __init__() method only
    return '{}.{}@email.com'.format(self.first, self.last)

 @property
 def fullname(self):
    return '{} {}'.format(self.first, self.last)

emp1 = Employee('Aquib', 'Javed')

emp1.email # Since you've mentioned `email` as property and returning as string, you should just use its property's name
emp1.fullname # same goes here too
print(emp1.fullname)

Answer 2

阅读有关Short Description of the Scoping Rules?的信息（此处有关类：https://docs.python.org/3/tutorial/classes.html#a-first-look-at-classes）

将代码固定为：

# your class definition, all that belongs to it, is indented 1 more then "class .... :"
class Employee:
    # method of your class
    def __init__(self, first, last):
        self.first = first
        self.last = last

    # property of your class
    @property
    def email(self):
        return '{}.{}@email.com'.format(self.first, self.last)

    @property
    def fullname(self):
        return '{} {}'.format(self.first, self.last)

# not part of your class, you are creating an Instance of your class
emp1 = Employee('Aquib', 'Javed')

emp1.email      # this returns a string, but you do nothing with it - so it is discarded
emp1.fullname   # this returns a string, but you do nothing with it - so it is discarded
print(emp1.fullname) # this prints it

在下面的代码下运行时，崇高文本中的空白响应

2 个答案: