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How to Find Gaps Between Sorted Intervals in Python

This code finds gap ranges between sorted intervals using pairwise iteration, returning ranges where no interval covers.

intervals pairwise sorting
Python 
from itertools import pairwise

def find_gaps(intervals):
    intervals = sorted(intervals)
    gaps = []
    for prev, curr in pairwise(intervals):
        if prev[1] < curr[0]:
            gaps.append((prev[1] + 1, curr[0] - 1))
    return gaps

if __name__ == "__main__":
    intervals = [(1, 3), (5, 7), (10, 12), (…
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