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First solution in Clear category for Flatten a List by desvisuales
import re
def flat_list(array):
new = str(array)
solution = [int(s) for s in re.findall('-?\d+', new)]
return solution
if __name__ == '__main__':
print('Example:')
print(flat_list([-1, [1, [-2], 1], -1]))
assert flat_list([1, 2, 3]) == [1, 2, 3], "First"
assert flat_list([1, [2, 2, 2], 4]) == [1, 2, 2, 2, 4], "Second"
assert flat_list([[[2]], [4, [5, 6, [6], 6, 6, 6], 7]]) == [2, 4, 5, 6, 6, 6, 6, 6, 7], "Third"
assert flat_list([-1, [1, [-2], 1], -1]) == [-1, 1, -2, 1, -1], "Four"
print('Done! Check it')
Dec. 13, 2019
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