In Python, almost all the code is implemented using classes. Programmers use classes to keep related pieces of code together. This is done using the keyword “class,” which is a collection of object-oriented constructs.
A class is a template for creating objects. Objects have member variables and have behaviour associated with them. In python a class is created by the keyword class.
For example, let's create a simple, empty class with no functions.
>>> class Cars: ... pass
The keyword class is followed by the class name whose first letter is capitalized and then comes a colon to end the class definition and declaration.