Python Program to Flatten a Nested List (Using sum())

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my_list = [[1], [2, 3], [4, 5, 6, 7]]

flat_list = sum(my_list, [])
print(flat_list)

 

Output

[1, 2, 3, 4, 5, 6, 7]

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Python Program to Flatten a Nested List (Using lambda and reduce())
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from functools import reduce

my_list = [[1], [2, 3], [4, 5, 6, 7]]<...

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