chunker for iterables

def chunker(iterable, chunksize, return_type=tuple):
    '''
    A generator, which yields chunks with given chunksize
    as return_type tuple.

    iterable := any object which is iterable
    chunksize := chunksize of each chunk
    return_type := returns the chunks as given type.

    example:
        >>> a = list(chunker(range(100), 10))
        >>> print(a)
    '''
    def get_chunk():
        for n, element in enumerate(iterator, start=1):
            yield element
            if n == chunksize:
                break
    iterator = iter(iterable)
    while True:
        chunk = return_type(get_chunk())
        if not chunk:
            break
        yield chunk