Error : IndentationError: unexpected indent

Question

我是 python 的新手，所以当运行我的代码基于类和对象时，我得到了这个错误：IndentationError: unexpected indent 但不知道我哪里出错了请帮助我得到它以及如何解决它感谢你在期待.... 祝你今天过得愉快！ :>

class Get_started:
    def __init__(self,name):
        self.name = str(input('Enter name'))
        print('Hello ',self.name)
        self.rect = self.Rectangle()

    class Rectangle:
    def __init__(self):
        print('In this program we are gonna calculate the area of rectange')

    def get_lb(self,l,b):
        self.l = int(input('Enter length  : '))
        self.b = int(input('Enter breadth : '))

    def show():
        print('Length & Breadth of rectangle are ',self.l,' & ',self.b)
    def cal_area(self):
        self.area = self.l * self.b
            print('Area : ',self.area)

m1 = Get_started('mr_halkat')
m1.Rectangle.get_lb()
m1.Rectangle.show()
m1.Rectangle.cal_area()

Answer 1

您需要缩进 Rectangle class 中的所有内容，并减少 cal_area 方法中 print 语句的缩进。

修改后的代码如下：

#!/usr/bin/python

class Get_started:
    def __init__(self,name):
        self.name = str(input('Enter name'))
        print('Hello ',self.name)
        self.rect = self.Rectangle()

    class Rectangle:
        def __init__(self):
            print('In this program we are gonna calculate the area of rectange')

        def get_lb(self,l,b):
            self.l = int(input('Enter length  : '))
            self.b = int(input('Enter breadth : '))

        def show():
            print('Length & Breadth of rectangle are ',self.l,' & ',self.b)
        def cal_area(self):
            self.area = self.l * self.b
            print('Area : ',self.area)

m1 = Get_started('mr_halkat')
m1.Rectangle.get_lb()
m1.Rectangle.show()
m1.Rectangle.cal_area()

Answer 2

说class Rectangle里面没有函数，cal_area(self)函数里面缩进错了

您是否尝试过这样放置代码：

class Rectangle:
     def __init__(self):
          print('In this program we are gonna calculate the area of rectange')
     def get_lb(self,l,b):
          self.l = int(input('Enter length  : '))
          self.b = int(input('Enter breadth : '))

     def show():
          print('Length & Breadth of rectangle are ',self.l,' & ',self.b)
     def cal_area(self):
          self.area = self.l * self.b
          print('Area : ',self.area)

Error : IndentationError: unexpected indent

Error : IndentationError: unexpected indent

python-3.x

python-3.7