bendtherules

class TODOList {
  ...
  ...
  addNewTodo(todoText){
    this.todos. ??
  }
}

bendtherules

install  Microsoft Visual C++ Compiler for Python 2.7
create this fake folder "C:\Users\ab\AppData\Local\Programs\Common\Microsoft\Visual C++ for Python\9.0\fake1\fake2"
set env var VS90COMNTOOLS= that fake folder 
now goto C:\Users\ab\AppData\Local\Programs\Common\Microsoft\Visual C++ for Python\9.0
youll find there is vcvarsall.bat, but it is not searched for here
copy it and paste in the VC folder
open for editing:
[in 3 places youll find this type of statement, replace them with these]

set VCINSTALLDIR=%~dp0

bendtherules

from flask import Flask
from flask import *
# import redis

app = Flask(__name__)
fname = r"E:/much.txt"

# db = redis.StrictRedis(host='localhost', port=6379, db=0)
# db.client_setname("Url_shortener")
# db_list_user_name = "user"

bendtherules

import pygame
class ball(object):
    global mouse_down
    #global pygame
    def __init__(self,x=320,y=240,speed=3):
        #global pygame
        self.x=x
        self.y=y
        self.speed=speed
        self.dir=None

bendtherules

import sys,pygame,math;
from class_ball import ball
pygame.init()
clock = pygame.time.Clock()
size=width,height=640,480
#x=320
#y=240
#speed=3
#dir=None
black=0,0,0

bendtherules

---bug_file.py---

import math,another_file
a=another_file.class_a()

--another_file.py--

class class_a():
    def __init__(self):
        print(math.cos(0))