Question

How to sum all the numbers in nested lists in Python

Answer 1

def sum_the_nested(lst): 
    return sum(map(sum_the_nested, lst)) if hasattr(lst, '__iter__') else lst

lst = [[[[[[8]]]]], [1, 2, 3], [7, [9, 5], 0], [[90]], [[[[4, 5], 6], 19], 30]]


result = sum_the_nested(lst)

print(result)


#      6     +     8     +       21       +         64      +       90       =  189
# [[1, 2, 3], [[[[[8]]]]], [7, [9, 5], 0], [[[[4, 5], 6], 19], 30], [[90]]]



'''
run:

189

'''

 

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