ENCAPSULATION:
The process of binding properties and behaviours in a single unit.
or
The process of binding data and methods in a single unit.
We can access instance variables inside the class using self specifier.We can access instance variable outside of the class by reference variable.
Ex-1: class A():
a=100
def m1(self):
print(self.a)
b=A()
b.m1()
print(b.a)
If we declare instance variable as private then we can access the variable inside the class only. We cannot access from outside the class.
Ex-2: class A():
__a=100
def m1(self):
print(self, __a)
b=A()
b.m1()
print(b. __a)
Ex-3: class A():
def m1(self):
print(“m1 method”)
def m2(self):
print(“m2 method”)
b=A()
b.m1()
b.m2()
We can call instance method from outside of the class using reference variable
Ex-4: class A():
def m1(self):
print(“m1 method”)
def m2(self):
print(“m2 method”)
def m3(self):
print(“m3 method”)
a=A()
a.m3()
a.m1()
We can access private variables outside of the class using get method.
Ex-5: class A()
__a=100
def m1(self):
print(self.__ a)
def get m1(self)
return self.__ a
a=A()
print(a.getm1())
Now we are modifying a=100 as a=200 outside of the class and we are accessing outside of the class.
Ex-6: class A()
__a=100
def set m1(self,a)
self.__ a=a
def get m1(self):
return self.__ a
a=A()
a.set m1(200)
print(a.get m1())
