decorator.py

import random

def decor (func): #decorators
    def wrap():
        print('************')
        func()
        print('************')
    return wrap

def print_text():
    print('hello')
decorated=decor(print_text)
decorated()

class student:     #magic methods
    def __init__(self,cont):
        self.cont=cont
    def __truediv__(self,other):
        line ='=' *len(other.cont)
        return '\n'.join([self.cont,line,other.cont])

contenu=student('hello python')
contenu_2=student('how are you ?')
print(contenu/contenu_2)

class Vector2d:
    def __init__(self,x,y):
        self.x=x
        self.y=y
    def __add__(self,other):
        return Vector2d(self.x+other.x,self.y+other.y)
first=Vector2d(5,7)
second=Vector2d(3,9)
result=first+second
print(result.x)
print(result.y)

class specialstring:
    def __init__(self,cont):
        self.cont=cont
    def __gt__(self,other):
        for index in range(len(other.cont)+1):
            result=other.cont[:index]+">"+self.cont
            result += ">" + other.cont[index:]
            print(result)
python=specialstring("python")
hello=specialstring("hello")
python>hello

class Vaguelist:
    def __init__(self,cont):
        self.cont=cont
    def __getitem__(self,index):
        return self.cont[index+random.randint(-1,1)]
    def __len__(self):
        return random.randint(0,len(self.cont)*2)
vague_list=Vaguelist(["A","B","C","D","E"])
print(len(vague_list))
print(len(vague_list))
print(vague_list[2])
print(vague_list[2])