a.strip().split() produces a list of strings of the form
'a-b' where the
b are composed of digit characters.
This means that:
alignment = set([tuple(map(int, x.split("-"))) for x in a.strip().split())
set from a list defined by a list comprehension. The list comprehension takes each of these
'a-b' strings, spits it into two on the
'-' character and then converts each of those from string to integer value by
int function onto them, and then lastly converts the resulting pair into a tuple of two integer values — this results is a
set being produced from a list of tuples — which is the result you’re seeing.
solved Can someone tell me what this statement does? [closed]