Check file Sequence

A python script that those two functions. Function 1. reads all the files in the directory and displays them as a single line showing the frame range. Sample 1 directory list looks like this. [login to view URL] [login to view URL] [login to view URL] [login to view URL] [login to view URL] [login to view URL] run python app [login to view URL] -l Results [login to view URL] Function 2 reads files of directory looks for missing files in the sequence and displays only the missing frames in the file sequence. [login to view URL] [login to view URL] [login to view URL] [login to view URL] run python app [login to view URL] -c Results Missing frames 0003,0005 ## Deliverables I require this application to be written in python version 2.5 or 2.6 this will be running on a windows and Mac System.