# Class

* Python is an Object-Oriented Programming Language.
* A Class is used to create *User-Defined Data Structures*. 
* Classes have **data members** and define #key# methods: identify the behavior and actions that can be performed with its data members #key#.
* Object is the unique instance of a class.

## How to create a class and object


class ClassExample:
  def __init__(self, collegeName):
    self.collegeName = collegeName

  def display(self):
    print("My college name is " + self.collegeName)

object = ClassExample("GITAM")
object.display()


# Variables
* A variable is a *container used to store data values*.
* There is no need to specify a data type to declare a variable.
* It will consider the corresponding data types according to the value that you are assigning to the variable.


code = 12
name = "GITAM"
branch = "CSE"
location = "Visakhapatnam"
print(str(code) + " " + name + " " + branch + " " +location)


# Casting
* Casting is used to convert a variable value from one data type to another. 
* It is also used to specify the type of the variable.


rollno = str(121710303001)
name = "Aditya"  
cgpa = int(7.87)    
per = float(9)

print("Rollno : " , rollno )
print("Name :" , name)
print("CGPA :" , cgpa)
print("Percentage : ", per)



## How to check the datatype of a variable

You can get the data type of a variable using the `type()` function.


rollno = 121710303001
name = "Aditya"  
cgpa = 7.87
  
print(type(rollno))
print(type(name))
print(type(cgpa))


Class objects vs. variables

Python classes create user-defined structures with data members and methods, unlike variables, which store data values.