Python translation, please review.

Basically a duplicate of other katas (with input validation) such as:

• Grasshopper - Array Mean

• Get the mean of an array
  

tests are wrong: they look for an add function with diff params

description says input is always an array not including non integer or non float elements. test case passes just a string

Use Test.assert_equals

The author has been inactive since January 2014. As I see, many of old Ruby katas have have poor quality according to today's standards. I'm not sure if it makes more sense to fix or to retire them. (Btw. in Python this would be max 8kyu :))

@max30272 it really should. The description explicitly hands you the math to peform, so the kata boils down to two very basic "how do I X in ruby?" questions, and if your solution is more than 1 line you're doing something very wrong.

It should be 8 kyu. :(

Added various other dice to tests

Updated description and added sample and random tests

Re-ranked to 7 kyu

• description is contradictory with tests: "Inputs are always populated (non-empty) arrays" -- however, empty arrays are tested
• description poorly formatted
• no sample tests
• no random tests
• overrated -- this is max 7 kyu

Fixed

Too easy to be a 6kyu