This is so cool, I love it.

nice use of strings.TrimRight

Thanks rowcased for your reply.
I just attempted once again and this time I passed all the tests. :)
I dont know about the initial value because the test values were not visible.
Have a good day.

I passed every other test, but only the last small test sends this eexception:
Is it my error?
Unexpected exception raised

Traceback (most recent call last):
File "/runner/frameworks/python/cw-2.py", line 111, in wrapper
func()
File "main.py", line 45, in small_tests
test.assert_equals(check(prime_factors(number), number), True)
File "main.py", line 34, in check
actual = reduce(lambda x, y: x*y, [i ** j for i, j in zip(primes, power)])
TypeError: reduce() of empty sequence with no initial value

Brilliant. Good job!

Good solution!
I agree that the spacing must have been more generous.