Python elegant assignment based on True/False values

Question

I have a variable I want to set depending on the values in three booleans. The most straight-forward way is an if statement followed by a series of elifs:

if a a         


        

Answer 1

Since your getting all the combinations, you could create an index based on the values like this:

def value(a,b,c ): 
   values = ['8th','7th','6th','5th','4th','3rd','2nd','1st']
   index = ( 4 if a else 0 ) + ( 2 if b else 0 ) + ( 1 if c else 0 )
   return values[index]

if __name__ == "__main__":
   print value(True,  True,  True )
   print value(True,  True,  False )
   print value(True,  False, True )
   print value(True,  False, False )
   print value(False, True,  True )
   print value(False, True,  False)
   print value(False, False, True )
   print value(False, False, False)

output:

1st
2nd
3rd
4th
5th
6th
7th
8th