'All triangles will be right isoceles.' from the Kata description.

Nice extension to a general scenario though.

I wanted to demonstrate how many different ways this particular task could be solved, I suppose there are still more than what I found...

Also, I learn from playing with code and experimenting in this way. For example, in this case I learned about ast and literal_eval.

Note: encoding can be done with

def encoding(sample_string):
    binary = ' '.join(map(bin, bytearray(sample_string, encoding='utf-8')))
    return binary

Why the random choice of 3 methods performing globally the same task (although eval is not recommended as usual)?

Hard-coded lambda expression with succession of conditional expressions? Not exactly easy to read

Hi, not that dir is actually a Python keyword :)

Note that this code would run infinitely for negative numbers ;)
But I guess this was on purpose ^_^

done

Not sure it's worth importing for that single use.

My gut feel is that it'd make no measureable difference. That said you can never be sure, so you could benchmark it yourself if you like.

Would import string module make the function run slower?

F# translation for approval

In C#, the name of argument is n for an array of integers: is misleading. Consider using numbers or similar name instead.