2022-05-05 18:25:55 +02:00

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>>> {x: x ** 2 for x in range(6)}
{0: 0, 1: 1, 2: 4, 3: 9, 4: 16, 5: 25}
>>> {x: x ** 2 for x in range(6) if x % 2}
{1: 1, 3: 9, 5: 25}
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>>> {x ** 2: [y for y in range(x)] for x in range(5)}
{0: [], 1: [0], 4: [0, 1], 9: [0, 1, 2], 16: [0, 1, 2, 3]}