Smol rename script

rename.py

import os

listing = list(sorted(os.listdir('./timelapse')))

def get_num(x: str):
    return int(x.split("-")[0])

prefix = "000"
suffix = "-main.png"
startNum = get_num(listing[0])
prevNum = startNum

print('Starting with: ' + str(startNum))

for filename in listing[1:]:
    numPart = get_num(filename)

    if (prevNum + 1 == numPart):
        prevNum = numPart
        continue

    delta = numPart - prevNum - 1
    print('Dropped frames! ' + str(prevNum) + ' to ' + str(numPart) + ' delta ' + str(delta))

    for num in range(prevNum, startNum - 1, -1): # If we start from beggining, we may accidently override existing files
        os.rename('./timelapse/' + prefix + str(num) + suffix, './timelapse/' + prefix + str(num + delta) + suffix)    
        print('Renamed ' + prefix + str(num) + suffix + ' to ' + prefix + str(num + delta) + suffix)

    prevNum = numPart