Function composition and chaining in Python.

composer.py

def chain(*args):
    result = args[0]
    for func in args[1:]:
        result = func(result)
    return result

def compose(*funcs):
    cfuncs = []
    for func in funcs:
        if hasattr(func, '__call__'):
            cfuncs.append(func)
    def composed(*args):
        result = tuple([chain(a, *cfuncs) for a in args])
        if len(result) == 1:
            return result[0]
        return result
    return composed

if __name__ == '__main__':
    def add1(x):
        return x + 1

    def times10(x):
        return x * 10

    ch = chain(1, add1, times10)
    print(ch)

    co = compose(add1, times10)
    print(co(1))
    print(co(1, 2))

    assert(ch == co(1))