Pattern Formation-Continuation

14)

for row in range(5):

    for col in range(row):

        print("* ", end=' ')

    for col in range(5-row):

        print(col+1, end=' ')

    print()

Output:

1 2 3 4 5 

* 1 2 3 4 

* * 1 2 3 

* * * 1 2 

* * * * 1 

OOPS-Object Oriented Programming System:

-->Python is a multi-paradigm language.

-->In Python object-oriented Programming (OOPs) is a programming paradigm that uses objects and classes in programming.

Few oops concepts:

Class-->Template or blueprint of an idea(Logical entity).

-->Class is collection of objects.

object-->Object is a physical or real-time or real world entity.

It contains states(attributes) and behaviour(methods).

-->Object is representation of class.

Example for state & behaviour-Water bottle

*State-->Capacity of that water bottle(litres),Madeup of which material

*Behaviour-->Filling,washing,opening,closing the bottle.

Note:

Class can be presented without objects,but objects cannot be created without class.

Example for class and object: Invitation

class-Many templates are available for printing invitation.So each templates represent class.

Object-If we have selected one template and got physical copy of invitation that invitation copy will be object ,which is physical or real world entity

Encapsulation

-->It protects your classes from accidental changes or deletions and promotes code reusability and maintainability.

-->This function cannot be used by any other.

-->Defined using special variable with __ (docker).

Example-

class company:

    def __research():

        pass

    def __give_salary():

        pass



co=company()

co.__research()

In this example if a company wants to protect their research and salary data encapsulation can be used.

Python modules:

-->To install python modules use sudo apt install python3-modulename command in your terminal.

1) Emoji Module:

import emoji

result = emoji.emojize('Python is :thumbs_up:')

print(result)



# You can also reverse this:

result = emoji.demojize('Python is 👍')

print(result)

Output:

Python is 👍

Python is :thumbs_up: