Weird function defaults error?

[deanhystad]

Python does it this way because when you call a function you can treat key value arguments as position arguments.

def mixedbag(pos1, pos2, keyvalue1=1, keyvalue2=2):
    pass

mixedbag(1, 2, 3, 4) # This is allowed.  pos1=1, pos2=2, keyvalue1=3, keyvalue2=4

If you ere allowed to intermix position and key value arguments the mapping of these values would become confused:

def mixedbag(pos1, keyvalue1=1, pos2, keyvalue2=2):
    pass

mixedbag(keyvalue2 = 1, 2, 3) # Who gets 1?