runserver.py

import subprocess, os
import sys
import webbrowser
import time

os.system("")
class bcolors:
    OKBLUE = '\033[94m'
    WARNING = '\033[93m'
    LINE = '\033[90m'
    ENDC = '\033[0m'

print(f"{bcolors.LINE}---------------------------------------{bcolors.ENDC}")
print(f"{bcolors.OKBLUE}Opening page...")
print(f"{bcolors.LINE}---------------------------------------{bcolors.ENDC}")

reqs = subprocess.check_output([sys.executable, '-m', 'pip', 'freeze'])
installed_packages = [r.decode().split('==')[0] for r in reqs.split()]

# use rangehttpserver as it supports range headers (fixes video scrubbing in the browser)
if 'rangehttpserver' not in installed_packages:
    os.system("title " + "Installing packages...")
    print(f"{bcolors.LINE}---------------------------------------{bcolors.WARNING}")
    print(f"{bcolors.OKBLUE}Installing packages...")
    print(f"{bcolors.LINE}---------------------------------------")
    subprocess.run('pip install -r requirements.txt', shell=True)
    print(f"{bcolors.LINE}---------------------------------------")


# make a localhost web server and open generated index.html, since CORS blocks file:// fetching
os.system("title " + "Running web server...")
subprocess.Popen(['python', '-m', 'RangeHTTPServer'])
time.sleep(3)
webbrowser.open('http://localhost:8000/index.html')