Frame range calculator

frame_range_calc.py

# This is my frame range calculator. There are many like it, but this one is mine.

# Python 2 and 3 compatible. The division method becomes less optimal as the number increases, but 
# it works for the use case of relatively small numbers of divisions (up to a few dozen).

import math
import argparse

argparser = argparse.ArgumentParser()

argparser.add_argument('first_frame', type=int, help='first frame')
argparser.add_argument('last_frame', type=int, help='last frame')
argparser.add_argument('divisions', type=int, help='number of divisions')

args = argparser.parse_args()

def get_range(num_frames, first_frame, last_frame, multiple):
        begin = (num_frames * multiple) + first_frame
        end = num_frames * (multiple + 1) + first_frame - 1
        if end > last_frame:
                end = last_frame
        return (int(begin), int(end))

first = args.first_frame
last = args.last_frame
divisions = args.divisions
frames = last - first
num_frames = math.ceil(float(frames) / float(divisions))
ranges = [get_range(num_frames, first, last, x) for x in range(divisions)]
for x in ranges:
        print('{}-{}'.format(x[0],x[1]))