Python function for partitioning a range of integers into X number of subranges

gistfile1.py

def partition(partition_count, id_range):
    """
    Partitions an integer range into partition_count partitions of uniform size.
    id_range specifies the integer range to partition (a tuple (from, to)).
    """
    partition_size = ceil((id_range[1] - id_range[0]) / partition_count) + 1
    for x in range(0, partition_count):
        from_ = int(x * partition_size) + id_range[0]
        to = min(int(from_ + partition_size - 1), id_range[1])
        yield (from_, to)