Function _partial_prepare_merger

Lib/functools.py:297–311

(args)

Placeholder = _PlaceholderType()

def _partial_prepare_merger(args):
    if not args:
        return 0, None
    nargs = len(args)
    order = []
    j = nargs
    for i, a in enumerate(args):
        if a is Placeholder:
            order.append(j)
            j += 1
        else:
            order.append(i)
    phcount = j - nargs
    merger = itemgetter(*order) if phcount else None
    return phcount, merger

def _partial_new(cls, func, /, *args, **keywords):
    if issubclass(cls, partial):