Clarifying python __init__ and main

initAndMain.py

from selenium import webdriver
from collections import deque
import threading

class AccountManager():
  def __init__(self):
    self.login = []
    self.emails= []
    self.log = deque([])
    self.IWT=5
    self.browser=webdriver.FireFox()
    
  def log_listener(self):
    while(self.active):
      if len(self.log)>0:
        print(self.log.popleft())

  def start_log(self):
    self.active=1
    t = threading.Thread(target=self.log_listener)
    t.start()
    
  def start_manager(self):
    self.browser.get('http://www.google.com')
    self.log.append('Loaded Google')
    self.active=0
    self.browser.quit()
    
if __name__=="__main__":
  wga = AccountManger()
  wga.start_log()
  wga.start_manager()