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  1. #!/usr/bin/env python3
  2. import sys
  3.  
  4.  
  5. def exit():
  6.     input('Press <Enter> to exit')
  7.     sys.exit()
  8.  
  9.  
  10. def expect_digits():
  11.     options = {'4': exit}
  12.     for d in '123':
  13.         options[d] = lambda d=d: print(d)
  14.     expect(options)
  15.  
  16.  
  17. def expect(options):
  18.     while True:
  19.         answer = input('Input ' + '|'.join(options)).strip()
  20.         if answer in options:
  21.             options[answer]()
  22.         else:
  23.             print('Unknown command. Try again')
  24.  
  25.  
  26. expect({'y': expect_digits, 'n': exit})
Success #stdin #stdout 0.04s 9408KB
comments (?)
stdin
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invalid
y
1
invalid
2
1
4
stdout
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Input n|yUnknown command. Try again
Input n|yInput 4|2|3|11
Input 4|2|3|1Unknown command. Try again
Input 4|2|3|12
Input 4|2|3|11
Input 4|2|3|1Press <Enter> to exit
https://ideone.com/Vs4rUo
language:
Python 3 (python  3.9.5)
created:
6 years ago
visibility:
secret

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