gistfile1.txt

# -*- coding: utf-8 -*-
import os
import sys
import pysubs 

try:
    print (sys.argv[1])
    print()
    file_full_path = sys.argv[1]
except:
    print("error")
    input()
    exit()


subs = pysubs.load(file_full_path)

for line in subs:
    line.text = line.text.capitalize()

subs.save(save_path)