gistfile1.py

sorted(customers, key=lambda c: c.name.last)

reduce(lambda x, y: x.balance + y.balance, customers)

map(lambda x: x*x*x, range(1, 11))
# [1, 8, 27, 64, 125, 216, 343, 512, 729, 1000]

filter(lambda x: x%2 != 0 and x%3 != 0, range(2, 25))
# [5, 7, 11, 13, 17, 19, 23]