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Solution explained solution in Clear category for Flatten a List by defensor
def flat_list(array):
# create function in order to judge the type of elements in array
def get_elms(data):
for element in data:
# if type of the element is "list", operate get_elems() until it reaches the deepest level
if isinstance(element, list):
yield from get_elms(element)
else:
yield element
return [i for i in get_elms(array)]
if __name__ == '__main__':
print(flat_list([1, 2, 3]))
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')
July 8, 2021
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