class circle:
    def __init__(self,r):
        self.x=r
    def getperi(self):
        return 2*3.14*self.x
    def getarea(self):
        return 3.14*self.x*self.x
circle1=circle(9)
a=circle1.getarea()
print(a)
b=circle1.getperi()
print(b)

class capstr(str):
    def __new__(cls, string):
        string=string.upper()
        return str.__new__(cls,string)
aa=capstr("hjm zsh xy")
print(aa)
class ss:
    def __init__(self):
        print("__init__")
    def __del__(cls):
        print("__del__")
sss=ss()