Get count of tuples in list regardless of elements orders

Question

I have a list of tuples that looks something like this:

my_list = [(1,12),(12,1),(12,1),(20,15),(7,8),(15,20)]

I want to get a count of the num

Answer 1

You can swap all positions by size and then use collections.counter:

from collections import Counter
l = [(1,12),(12,1),(12,1),(20,15),(7,8),(15,20)]
new_l = Counter([[(b, a), (a, b)][a < b] for a, b in l])
for a, b in new_l.items():
  print('{},{}:{}'.format(*(list(a)+[b])))

Output:

15,20:2
7,8:1
1,12:3