Directly raise

Traceback (most recent call last):
  File "main.py", line 1, in <module>
    from solution import *
  File "/home/codewarrior/solution.py", line 1, in <module>
    from setup import *
  File "/home/codewarrior/setup.py", line 3, in <module>
    __builtins__.len = None
AttributeError: 'dict' object has no attribute 'len'

Update the details with removal of the previous kata (no gaurantee that it has been trained on). Otherwise nice kata!

I suggest to check against an input that contains nil and false as values of the array (invalidating my initial solution).

requires more test cases

Where is the difference with V2?

Where is the difference with V1?

As others reported already, the parameter 'list' should be renamed. And I always think it's a good idea to have an example in the description, even for simple tasks.

raulbc777 is right, the name of the variable should be changed. I used 'lst' in my solution.