Partial Function application in python

partial.py

def partial(fn, *pargs):
    """
    Partial Function builder
    >>> f=lambda p1,p2: p1+p2
    >>> pf=partial(f, 66)
    >>> pf(44)
    110
    """
    def _(*args):
        plist=list(pargs)
        plist.extend(list(args))
        return fn(*plist)
    return _