python循环语句for

# python >>> range(5) [0, 1, 2, 3, 4] >>> range(7) [0, 1, 2, 3, 4, 5, 6] >>> help(range) >>> range(1,10) [1, 2, 3, 4, 5, 6, 7, 8, 9] >>> range(1,10,2) [1, 3, 5, 7, 9] >>> # 拿出1～10之间所有的偶数 ... range(2,1

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