write_index_file.py

fobj = open(os.path.join(loc,index.text), “w+”)
/* note: in the above line of code I have used os.path.join to build a path that contains the file name which is a better way of building the file path instead of overloading  “+” operator.*/

# saving the index to this index.txt file

for index, each in enumerate(files):
    if index != 0:
        fobj.write(str(index)+” ”+ each.split("-")[-1].split(".")[0]+”\n”)

# close the file
fobj.close()