i'm using the PyArg_ParseTuple() function in my python bindings for some C code. the code i'm wrapping has two functions, one that returns a default value instead of an error if an error would have occurred, and one that returns an error. i simply want to use one function, and an optional argument.
Using PyArg_ParseTuple(), how might I tell if the optional argument was filled? the only thing i could come up with was parsing twice with two different initial values (in case you initialized to the default value, and said "don't use the default, it didn't change!")