Python fork

1. Fixed test framework setup
2. Added useful assertion message
3. Modified description
   • included the exception messages to return in the case of invalid parameter(s) (all three languages Python/JS/Ruby return the exact same error messages 'Invalid gender' / 'Invalid weight' / 'Invalid duration')
   • fixed formatting
   • removed minor typo

Use spoiler flag next time, please.

The description should specify in which order the exceptions are evaluated and what error messages should be used. In this case, gender is evaluated first, then weight, then duration.

else is unnecessary here

That depends entirely on your language.

Also, please stop complaining about kata ranks being off by one ( not you specifically, just everyone ). Changing ranks is expensive, not worth it, and not going to happen. Just enjoy the cheap points.

Completely agree, I tend to use else for readability. Thanks for commenting!

You don't actually need the else statement here.
If the first return statement runs, the function will be exited, and the second return statement will not run.

That said, I can see why you'd include the else statement for readability.

its like the compound intrest formula
you have to iterate problem based on the weight you ger week by week

Having the same problem right now..

In the technical details section/paragraph there is a typo for the word formula. It is spelled "formulae" in the kata

Are you sure this kata is ok? For M 250 5 I got "231.25 should equal 231.8". But when I calculate this on my calculator I also get 231.25, there's no way to get 231.8 with those inputs so I think those tests are off.