Python APScheduler:TypeError: func must be a callable or a textual reference to one . Fix by __cell__.

APS_TypeError_fix_by__cell__.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Tue Dec 26 16:18:35 2017

@author: zino
"""

from datetime import datetime
import time
import os

from apscheduler.schedulers.background import BackgroundScheduler


class Foo:
    
  def __init__(self,n):
      self.name=n
    
  def __call__(self):
      self.tk(self.name)
      
  def tk(self,name):
      print('Tick%s! The time is: %s' % (name,datetime.now()))    



if __name__ == '__main__':
    scheduler = BackgroundScheduler()
    for i in range(1,5):
        scheduler.add_job(Foo(i), 'interval', seconds=i)

    scheduler.start()
  
    

    try:
        while True:
            time.sleep(2)
    except (KeyboardInterrupt, SystemExit):
        print('exit')
        scheduler.shutdown()