fork download
copy 
  1. def is_int(e):
  2.   return type(e) == int
  3.  
  4. def deep_lst_sum(lst):
  5.     total = 0
  6.     def helper(lst):
  7.         if lst == []:
  8.             return 0
  9.         elif is_int(lst[0]) == True:
  10.             total += lst[0]
  11.             return helper(lst[1:])
  12.         else:
  13.             return helper(lst[0])
  14.     helper(lst)
  15.     return total
  16.  
  17. deep_lst_sum([6, 2, [8, 4, 5], [9, [5]]])
Runtime error #stdin #stdout #stderr 0.02s 8736KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
stderr
copy 
Traceback (most recent call last):
  File "./prog.py", line 17, in <module>
  File "./prog.py", line 14, in deep_lst_sum
  File "./prog.py", line 10, in helper
UnboundLocalError: local variable 'total' referenced before assignment
https://ideone.com/9gUVcP
language:
Python 3 (python  3.9.5)
created:
9 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!