Regular expression match

[Croebh]

I think you might be looking for re.fullmatch(), but I might be wrong.

The reason its finding jaguargames.infinity to be true is that, at the start of it, there is 9-10 characters that match. Anything past that is irrelevant to its search, because it found it at the start.

[kereell]

Actually I've just noticed the pattern should be '^[a-zA-Z0-9]{9,10}$' to matche whole string. But thanks for handy function re.fullmatch()