Question

I have a dictionary

example: A = {1:'one',2:'two' , 3: 'three}

so what I want is basically like a 2 for loops sort of stuff..
so that I can get the following order..

# 1 2
# 1 3
# 2 3
... and so on if more elements are there

so basically that o(n2) operation.. where we have a loop withing a loop
how do we achieve this in python dictionary.
I am having a hard time figuring that out..

for key in A.keys():
      # how do i Access all the other keys.. 
           # do something

Thanks

Answer 1

>>> import itertools as it
>>> A = {1:'one', 2:'two', 3: 'three'}
>>> list(it.combinations(A.keys(), 2))
[(1, 2), (1, 3), (2, 3)]