Question

我的代码中没有红色标记。它可以运行，但是什么都不显示？

def main():
  menuInput()

def menu():
  print('''
  Welcome! Please make a choice from the following menu

  1. Select a year and display available data
  2. Review averages by year range
  3. Select a date range and show highest temperature
  4. Select a date range and show lowest temperature 
  5. Get total rainfall for a selected year range
  6. blank
  7. blank
  8. See this menu again
  9. QUIT the program
''')


def menuInput():
  while True:
    menu()
    try:
      userChoice=int(input('Please make a selection: '))
      if userChoice > 9:
        print('Please enter a number less or equal to 9')
      elif userChoice <= 0:
            print('Please enter a number greater than 0')
      elif userChoice == 1:
            print('Good')
      elif userChoice == 2:
            print('Good')
      elif userChoice == 3:
            print('Good')
      elif userChoice == 4:
            print('Good')
      elif userChoice == 5:
            print('Good')
      elif userChoice == 6:
            print('Good')
      elif userChoice == 7:
            print('Invalid Choice')
      elif userChoice == 8:
        print('Good')
      elif userChoice == 9:
        print('Program Exiting!')
      else:
        print('Invalid Choice')
        continue
    except ValueError:
      print('Please enter a whole number instead')
      continue
  main()

我想假设是因为没有正确调用menu（）或未将menu（）分配给诸如displayMenu = MENU CODE 之类的变量。我不确定如何正确地添加或传递该变量而不破坏它

Answer 1

如果您已逐字复制并粘贴了代码，则问题是您的main()函数缩进不正确。取消缩进main()行。

缩进main()时，它成为函数menuInput()的一部分，结果在Python的 actual main中没有任何运行（{ {1}}。

如何修复代码以正确显示菜单？

1 个答案: