JackInTaiwan

# -*- encoding: utf-8 -*-
import urllib2 as url2
from bs4 import BeautifulSoup
import re
import requests
#from vpython import *     # !!! MUST import this,otherwise you're NOT allowed to use curve or others!!!
from visual import *
from visual.graph import *

res = list()

JackInTaiwan

def convert(num) :
    num = str(num)
    if ('e' in num):
        index = num.index('e')
        power = num[index+1::]
        power = int(power)
        num_num = num[:index]
        output = '0.' + '0'*(abs(power)-1) + num_num
        return (output)
    else :

JackInTaiwan

class Animal:
  blood = True
  __alive = True
  
 
print(Animal.blood)
# True
print(Animal.alive)
# Error: AttributeError: type object 'Animal' has no attribute 'alive'
print(Animal.__alive)

JackInTaiwan

class Animal:
	def __init__(self):
		self.__alive = True
		self.__age = 0

	def get_age(self):
		return self.__age
	
	def add_age(self):
		self.__age += 1

JackInTaiwan

class Animal:
	def __init__(self):
		self.__alive = True
	
	def __print_something(self):
		print("shxt!!!")
		
		
dog = Animal()

JackInTaiwan

class Animal:
	def __init__(self, food):
		self.blood = True
		self.__alive = True
		self.__food = food
	
	def __say_something(self):
		print("this tutorial is so long...")
	
	def set_food(self, new_food):

JackInTaiwan

class Shiba:
    def __init__(self, height, weight):
        self.height = height
        self.weight = weight

    @staticmethod
    def pee(length):
        print("pee" + "." * length)

JackInTaiwan

class Shiba:
    pee_length = 10

    def __init__(self, height, weight):
        self.height = height
        self.weight = weight

    @classmethod
    def pee(cls):
        print("pee" + "." * cls.pee_length)

JackInTaiwan

class Shiba:
    pee_length = 10

    def __init__(self, height, weight):
        self.height = height
        self.weight = weight

    @staticmethod
    def pee():
        print("pee" + "." * pee_length)

JackInTaiwan

import abc


class Dog(metaclass=abc.ABCMeta):
    @abc.abstractmethod
    def eat_shit(self):
        return NotImplemented


class Shiba(Dog):