파이썬 slice

slice 내장 객체가 있다. 

numbers = (1, 2, 3, 4, 5)
print(numbers[2::2])  # (3, 5)
interval = slice(2, None, 2)
print(numbers[interval])  # (3, 5)
interval = slice(3)
print(numbers[interval])  # (1, 2, 3)
interval = slice(2, 4)
print(numbers[interval])  # (3, 4)
interval = slice(2, None)
print(numbers[interval])  # (3, 4, 5)