a=[[1,2,3],[4,5,6],[7,8,9]]
b=[[1,1,1],[1,1,1],[1,1,1]]
c=[[0,0,0],[0,0,0],[0,0,0]]
for i in range(3):
    for j in range(3):
        c[i][j]=a[i][j] + b[i][j]
for i in range(3):
    for j in range(3):
        print(c[i][j],end=' ')
    print()


#function with parameters
def add(a,b):
    c=a+b
    print(c)
add(5,3)    

#function returning single value
def add(a,b):
    return(a+b)
print(add(2,3))


#function returning multiple value
def area_peri(r):
    a=3.14*r*r
    p=2*3.14*r
    return(a,p)
area_peri(5)

class person:
    name='manohar'
    marks=150
    def display(cls):
        print(cls.name)
        print(cls.marks)
p1=person()
p1.display()
 
#encapsulation in python 
class stud:
    def __init__(self):
        self.id=16
        self.name='sai'
    def display(self):
        print(self.id)
        print(self.name)
p1=stud()
p1.display()

class A:
    a=1
    b=2
    def print1(cls):
        print(cls.a)
        print(cls.b)
class B(A):
    c=3
    def print2(cls):
        print(cls.c)
b=B()
b.print1()
b.print2()

class A:
    a=1
    b=2
    def print1(cls):
        print(cls.a)
        print(cls.b)
class B(A):
    c=3
    def print2(cls):
        print(cls.c)
class C(B):
    pho=809959228
    def print3(cls):
        print(cls.pho)
c=C()
c.print1()
c.print2()
c.print3()

class student_details:
    def __init__(self):
        self.rno=10
        self.name='shyam'
    def write(self):
        print(self.rno)
        print(self.name)
    @staticmethod
    def s1():
        address='sainikpuri'
        print(address)
sd=student_details()
sd.write()
sd.s1()