What does the n != do

xrange is Python 2, it was removed in Python 3. It is a very old solution, written when CW used Python 2.

my pycharm wrote that this line is wrong:

return sum(n % x < 1 for x in xrange(1, n + 1))

If I try "range" insted of "xrange", it is good

self.dimension, dimension have the same id.

Lol, me too. In case I need to translate it to C later.

same!

because the func compare 2 sets ! originally ascii is a string ! You cant compare 2 different types !

Here, you even didn't use a list, yeah, sum takes any iterable one I guess :D
Thank you!

Here, the division operator forces the float, not the 1.0.
Evaluate 1/1 in the python interpreter.

I really liked this solution compared to the rest. Had a bit of issues with the hypens and most answers containing regex, this is good answer for an mid coder.

No idea, I don't get that error. You have two ] there, when you delete one, the problem is not what you said, your answer is longer than it should be.

I didn`t even know about count method and used loops, lol. Thanks for the best solution!

what's the problem?