Website Blocker Using Python

# Run this script as root

import time
from datetime import datetime as dt

# change hosts path according to your OS
hosts_path = "/etc/hosts"
# localhost's IP
redirect = "127.0.0.1"

# websites That you want to block
website_list = 
["www.facebook.com","facebook.com",
      "dub119.mail.live.com","www.dub119.mail.live.com",
      "www.gmail.com","gmail.com"]

while True:

    # time of your work
    if dt(dt.now().year, dt.now().month, dt.now().day,8) 
    < dt.now() < dt(dt.now().year, dt.now().month, dt.now().day,16):
        print("Working hours...")
        with open(hosts_path, 'r+') as file:
            content = file.read()
            for website in website_list:
                if website in content:
                    pass
                else:
                    # mapping hostnames to your localhost IP address
                    file.write(redirect + " " + website + "\n")
    else:
        with open(hosts_path, 'r+') as file:
            content=file.readlines()
            file.seek(0)
            for line in content:
                if not any(website in line for website in website_list):
                    file.write(line)

            # removing hostnmes from host file
            file.truncate()

        print("Fun hours...")
    time.sleep(5)