Pygame Particle Generator

[DeaD_EyE]

I should clarify that.

My intention was to encapsulate the cache. You can do the trick inside the function definition. I think the most people don't know, that mutable objects are created at function definition time. This is odd.

The easiest way is, to define the cache-dictionary outside of the function and call it explicit with the function.

# instead of
def foo(cache={}):
    # code

# explicit
def foo(cache):
    # code

Alternatives can be a class or a closure. But for a class the function is too minimal.