我不明白的错误

Question

我正在尝试根据以下教程编写代码： https://www.youtube.com/watch?v=9mAmZIRfJBs&t=197s 在我看来，我完全是用同样的方式写的，但它仍然报错。有人可以向我解释为什么 Spyder(Python 3.7) 会这样做吗？这是我的代码：

我尝试使用另一个输入函数，所以 raw_input 而不是输入。我还尝试更改我的工作目录并保存文档

这是我的代码：

# -*- coding: utf-8 -*-
"""
Created on Tue Jan 29 14:47:27 2019

@author: johan
"""

import random

restaurantsList = ['boloco', 'clover', 'sweetgreens']

def pickRestaurant():
    print(restaurantsList[random.randint(0,2)])

def addRestaurant(name):
    restaurantsList.append(name)

def removeRestaurant(name):
    restaurantsList.remove(name)

def listRestaurant():
    for restaurant in restaurantsList:
        print(restaurant)

while True: 
    print('''

   [1] - List restaurant
   [2] - Add restaurant
   [3] - Remove restaurant
   [4] - Pick restaurant
   [5] - Exit

''')
   selection = raw_input(prompt='Please select an option: ')

   if selection == '1':
       print('')
       listRestaurant()
   elif selection == '2':
       inName = raw_input(prompt='Type name of the restaurant that you want to add: ')
       addRestaurant(inName)
   elif selection == '3':
       inName = raw_input(prompt='Type name of the restaurant that you want to remove: ')
       removeRestaurant(inName)
   elif selection == '4':
       pickRestaurant()
   elif selection == '5':
       break

这就是错误

    runfile('C:/Users/johan/Desktop/Unie jaar 2/untitled2.py', wdir='C:/Users/johan/Desktop/Unie jaar 2')
Traceback (most recent call last):

  File "C:\Users\johan\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 3267, in run_code
exec(code_obj, self.user_global_ns, self.user_ns)

  File "<ipython-input-93-2d7193d6cafb>", line 1, in <module>
runfile('C:/Users/johan/Desktop/Unie jaar 2/untitled2.py', wdir='C:/Users/johan/Desktop/Unie jaar 2')

  File "C:\Users\johan\Anaconda3\lib\site-packages\spyder_kernels\customize\spydercustomize.py", line 704, in runfile
execfile(filename, namespace)

  File "C:\Users\johan\Anaconda3\lib\site-packages\spyder_kernels\customize\spydercustomize.py", line 108, in execfile
exec(compile(f.read(), filename, 'exec'), namespace)

  File "C:/Users/johan/Desktop/Unie jaar 2/untitled2.py", line 35
selection = raw_input(prompt='Please select an option: ')
                                                         ^
IndentationError: unindent does not match any outer indentation level

代码应该给出餐厅列表，其中 1 被放入。如果 2 被放入，您可以将餐厅添加到列表中。3 就像是，但随后您将其删除。 4 从列表中随机选择一家餐厅。 5 什么都不做。

Answer 1

您必须在 Python 中正确缩进，因此；

# -*- coding: utf-8 -*-
"""
Created on Tue Jan 29 14:47:27 2019

@author: johan
"""

import random

restaurantsList = ['boloco', 'clover', 'sweetgreens']

def pickRestaurant():
  print(restaurantsList[random.randint(0,2)])

def addRestaurant(name):
  restaurantsList.append(name)

def removeRestaurant(name):
  restaurantsList.remove(name)

def listRestaurant():
  for restaurant in restaurantsList:
    print(restaurant)

while True: 
  print('''
  [1] - List restaurant
  [2] - Add restaurant
  [3] - Remove restaurant
  [4] - Pick restaurant
  [5] - Exit
  ''')
  selection = input('Please select an option: ')
  if selection == '1':
    print('')
    listRestaurant()
  elif selection == '2':
    inName = input('Type name of the restaurant that you want to add: ')
    addRestaurant(inName)
  elif selection == '3':
    inName = input('Type name of the restaurant that you want to remove: ')
    removeRestaurant(inName)
  elif selection == '4':
    pickRestaurant()
  elif selection == '5':
    break

Python 对缩进敏感，在创建函数或任何语句时，您需要缩进该函数内的任何代码，否则会出现上述错误。

补充说明：您使用的 print() 即 python2 和 raw_input 即 python3，因此我假设 Python3 并且将 raw_input() 更改为 input()。

Answer 2

在 while 循环中的 print 语句之前有 4 spaces，但该循环中的所有其他行只有 3 spaces 缩进，从 selection = raw_input...

您应该在 selection = raw_input... 及以下的每一行的开头添加一个 space。

我不明白的错误

Errors that I don't understand

python-3.7