`pairwise([a, b, c, d])` yields `(a, b), (b, c), (c, d)` — built into itertools since 3.10. Perfect for "diff consecutive elements" patterns (deltas, rate-of-change, validation between rows).
Python
from itertools import pairwise
# Compute deltas between consecutive readings
readings = [10, 13, 12, 18, 22]
deltas = [b - a for a, b in pairwise(readings)]
print(deltas) # [3, -1, 6, 4]
# Validate that a list is strictly increasing
def is_increasing(xs):
return all(a < b for a, b in pairwise(xs))
print(is_increasing([1, 2, 5, 10])) # True
print(is_increasing([1, 2, 2, 5])) # FalseSave your own code snippets
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