WHY STATIC METHODS?
===================
static methods allows you to isolate the utility methods into different sub-modules (classes).

@staticmethod
def staticmethod():
	implement

Ex:
phonepe:
	class sending money:
		class mobile:
			mobile : XXXXXXXX
			amount : 100000
			UPI : XXXX
			balance()
		class UPI:
		class account:
	class check balance:
		@ staticmethod
		def balance():
			implementation
				upi
				fetch ==> Bank
				display

class1:
	def m1():
		instance method
	@staticmethod
	def m2():
		static method
class2:
	m1() ==> Error
	m2() ==> correct

=================================

Class Method:
=============
class method can always define with: class variables.

@classmethod

==> can always invoke with only the class name.
Syntax:
	class-name.methodname()

class Animal:
    legs = 4
    @classmethod
    def met1(cls,name):
        print("{} walks with {} legs.".format(name,cls.legs))

    def met2(self):
        print(self.legs)

Animal.met1("cow")

==> class method is a built-in method in python that is used to define a method that is bound to the class and not the instance of the class.

=================================================

Setter and Getter Methods:
==========================
Setter method ==> set the values for instance variables
Getter method ==> get the value of instance variable

Why:
====
	for Encapsulation of the data.

Setter Method:
==============
Syntax:
	def setVariable(self, variable):
		self.variable = variable

Getter Method:
==============
Syntax:
	def getVariable(self):
		return self.variable

class Student:
    def setName(self,name):
        self.name = name

    def getName(self):
        return self.name

    def setRoll(self,roll):
        self.roll = roll

    def getRoll(self):
        return self.roll

stu1 = Student()

stu1.setName("Venkat")

return1 = stu1.getName()
print(return1)

stu1.setRoll(101)
print(stu1.getRoll())

========================================

Inner Class:
============
writing of one class inside the other class
	also called as "nesting of class"

class Phonepe:
	class send money:
		implementation
	class check balance:
		implementation
	class chat:
		implementation

class outerClass:# parent class
    def __init__(self):
        print("Outer class object creation...")

    class innerClass:# inner class
        def __init__(self):
            print("Inner Class Object creation....")

        def m1(self):
            print("Inner class method.")

    class inner:
        def __init__(self):
            print("Another Inner Class.")
        def m2(self):
            print("m2 is calling.")

obj = outerClass()
# creation of an object for the inner class
# using parent's class object
cobj = obj.innerClass()
cobj.m1()

acobj = obj.inner()
acobj.m2()