Pair combinations of elements in dictionary without repetition

Question

In python, I have a dictionary like this...

pleio = {\'firstLine\': {\'enf1\': [\'54\', \'set\'], 
                      \'enf2\': [\'48\', \'free\'], 
                  


        

Answer 1

If you want all pair combinations, you could probably use the following which is shorter, but I would not say this is more efficient.

[dict([(x,vx),(y,vy)]) for (x,vx) in pleio['firstLine'].iteritems()
                       for (y,vy) in pleio['firstLine'].iteritems()
                       if x < y]

Output

[{'enf3': ['34', 'set'], 'enf4': ['12', 'free']},
 {'enf2': ['48', 'free'], 'enf3': ['34', 'set']},
 {'enf2': ['48', 'free'], 'enf4': ['12', 'free']},
 {'enf1': ['54', 'set'], 'enf3': ['34', 'set']},
 {'enf1': ['54', 'set'], 'enf2': ['48', 'free']},
 {'enf1': ['54', 'set'], 'enf4': ['12', 'free']}]