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>>> x = list(range(1, 11)) >>> x [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] >>> y = x[::2] >>> y [1, 3, 5, 7, 9]
a = list(range(10)) # => [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] b = a[1::2] a is b # => False
a = b = list(range(10)) # => [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] del a[1::2] a is b # => True
a = list(range(10)) # => [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] del a[::2] a # => [1, 3, 5, 7, 9]
a = list(range(10)) # => [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] del a[1::2] a # => [0, 2, 4, 6, 8]