Python Program to Flatten a Nested List (Using Nested for Loops (non pythonic way))
my_list = [[1], [2, 3], [4, 5, 6, 7]]
flat_list = []
for sublist in my_list:
for num in sublist:
flat_list.append(num)
print(flat_list)
Output
[1, 2, 3, 4, 5, 6, 7]
