Question

How to flatten nested list in Python

Answer 1

def flatten_nested_list(nested_list):
   return [item for sublist in nested_list for item in sublist]

nested_list = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]

print(flatten_nested_list(nested_list))


'''
run:

[1, 2, 3, 4, 5, 6, 7, 8, 9]

'''

 

70+ SQL courses for beginners and professionals