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  1. yoba = [(None, None), (None, 'Smack my Bitch Up'), ('The Prodigy', None), ('The Prodigy', 'Smack my Bitch Up')]
  2.  
  3. def xstr(s):
  4.     return '' if s is None else str(s)
  5.  
  6. def dologic(A, B):
  7.     if (A and not B) or (not A and B):
  8.         return xstr(A) + xstr(B)
  9.     elif (A and B):
  10.         return str(A) + ' - ' + str(B)
  11.     else:
  12.         return '...'
  13.  
  14. for A, B in yoba:
  15.     print(dologic(A, B))
Success #stdin #stdout 0.02s 9984KB
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...
Smack my Bitch Up
The Prodigy
The Prodigy - Smack my Bitch Up
https://ideone.com/tJS5TN
language:
Python 3 (python  3.9.5)
created:
8 years ago
visibility:
public

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