Is there an in-built dictionary or module that I can access for this? I tried looking for one, but I can't seem to find the page...
Or do we have to type out the entire thing from scratch? X(

No, you are miles away from an efficient approach. You need to figure out another way to count primes.

Got it

Are the test cases always going to be primes, or do I have to check for that too?

The part where the function is called without an argument, like you need to do here. Just scroll a little bit and you'll find it.

Uh... Which part?

I honestly have no idea how to do that. I tried a loop, but...

Now you have to work out, how you can make the code work if no argument is passed to it.

And.... now it gives me a TypeError, like last time.

How?