Issue of Int object is not iterable

[sureshgautam]

First of all, wonderful contribrituion to solve portfolio optimization using GA!

During implementation, found issue with 'int object is not iterable' while executing next_generation in Task#10. Saw issue duteto sum(chk), where chk is an integer variable in the scope and used in sum function, which except list, tuple, dict, or arrey as its input. I applied the fix by removing sum (Original: if sum(chk)>0 Change: if chk>0:) in the next_generation function, however, please verify and fix your code base, or reject if I missed anything in which context fix is not required.

PS:
ipython notebook was executed in the google colab environment.
After applying the changes, solution works fine as per requirements.

[justinkim95]

I have a same problem with @sureshgautam
I change the sum(chk)>0 to chk>0 just like him, but it made an error in the Arithmatic-crossover at the end of the code.
the iteration of the arithmetic-crossover did not end.
Can you check it?

[Skr1996]

i have made same change but assigning negative weights if portfolio returns are negative