human
I wrote the below code

    implied_arg = 0
    partial_args = 0
    handler_to_inspect = handler
    if isinstance(handler, partial):
        partial_args = len(handler.args)
        handler_to_inspect = handler.func
    if inspect.ismethod(handler_to_inspect):
        implied_arg = 1
        num_args = get_num_args(handler_to_inspect)
    elif inspect.isfunction(handler_to_inspect):
        num_args = get_num_args(handler_to_inspect)
    else:
        implied_arg = 1
        num_args = get_num_args(handler_to_inspect.__call__)
    net_args = ((num_args - implied_arg) - partial_args)
    handler_args = ()
    if (net_args == 1):
        handler_args = ()
    if (net_args == 2):
        handler_args = (process.stdin,)
    elif (net_args == 3):
        handler_args = (process.stdin, weakref.ref(process))
    def fn(chunk):
        args = handler_args
        if (len(args) == 2):
            args = (handler_args[0], handler_args[1]())
        return handler(chunk, *args)
    return fn

What's a good function header?

=====
Here's a good function header?
assistant
#Here's a good function header.

def construct_streamreader_callback(process, handler):