26 lines
1006 B
Python
26 lines
1006 B
Python
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def flat_list(array):
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return iter(flat_iter(array))
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def flat_iter(array):
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new_array = []
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for i in array:
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if hasattr(i, '__next__'):
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new_array += flat_iter(i)
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else:
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new_array.append(i)
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return new_array
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if __name__ == '__main__':
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res = flat_list([1, 2, 3])
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assert hasattr(res, '__iter__'), "your function should return the iterator object"
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assert hasattr(res, '__next__'), "your function should return the iterator object"
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assert list(flat_list(iter([1, 2, 3]))) == [1, 2, 3], "First"
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assert list(flat_list(iter([1, iter([2, 2, 2]), 4]))) == [1, 2, 2, 2, 4], "Second"
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assert list(flat_list(iter([iter([2]), iter([4, iter([5, 6, iter([6]), 6, 6, 6]), 7])]))) == [2, 4, 5, 6, 6, 6, 6,
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6, 7], "Third"
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assert list(flat_list(iter([-1, iter([1, iter([-2]), 1]), -1]))) == [-1, 1, -2, 1, -1], "Four"
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print('Done! Check it')
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