Question

Right, simple question here. I couldn’t find an answer using google and looking here.

I need to write a few stubs for builtin functions within python like open(name[, mode[, buffering]]). However I can’t seem to find the default values for mode and buffering
It does not seem to be None

Answer 1

For making wrappers for the built-ins, what you usually end up doing is something like:

def myOpen(name, mode='r', buffer=None):
    if buffer:
        open_file = open(name, mode, buffer)
    else:
        open_file = open(name, mode)

The reason is that not all the arguments are accesible via keyword (buffer in this case).