Identify groups of varying continuous numbers in a list

Question

In this other SO post, a Python user asked how to group continuous numbers such that any sequences could just be represented by its start/end and any stragglers would be dis

Answer 1

I came across such a case once. Here it goes.

import more_itertools as mit
iterable = [2, 3, 4, 5, 12, 13, 14, 15, 16, 17, 20]  # input
x = [list(group) for group in mit.consecutive_groups(iterable)]
output = [(i[0],i[-1]) if len(i)>1 else i[0] for i in x]
print(output)