I have done this kata, but i get this error when i try to test or attempt, please fix it:

Traceback (most recent call last):
File "tests.py", line 1, in
from solution import *
File "/workspace/default/solution.py", line 1, in
from preloaded import *
File "/workspace/default/preloaded.py", line 7, in
backup_assert_equals_123 = test.assert_equals
NameError: name 'test' is not defined