Ето примерно решение:

def reduce(func, seq, init = None):
    if init is None and seq:
        init, *seq = seq
    for x in seq:
        init = func(init, x)
    return init

def groupby(func, seq):
    groups = {}
    for item in seq:
        groups.setdefault(func(item), []).append(item)
    return groups

def construct(functions, *args):
    return [f(*args) for f in functions]

def curry(func, *args, **kwargs):
    def curried(*newargs, **newkwargs):
        merged_kwargs = kwargs.copy()
        merged_kwargs.update(newkwargs)
        return func(*(args + newargs), **merged_kwargs)
    return curried

def compose(func, *functions):
    return lambda *args, **kwargs: reduce(lambda value, f: f(value), functions, func(*args, **kwargs))