Filtering in a Comprehension

evens = [i for i in range(20) if i % 2 == 0]
print(evens)

# Same thing the "manual" way, for comparison:
evens_manual = []
for i in range(20):
    if i % 2 == 0:
        evens_manual.append(i)
print(evens_manual == evens)

[0, 2, 4, 6, 8, 10, 12, 14, 16, 18]
True