Check out our courses:

AI Powered DevOps with AWS - Live Course :- https://go.telusko.com/AIDevOps-AWS
Coupon: TELUSKO10 (10% Discount)

Complete Java Developer Course Batch-4: https://go.telusko.com/Complete4
Coupon: TELUSKO10 (10% Discount)

Master Java Spring Development : https://go.telusko.com/masterjava
Coupon: TELUSKO20 (20% Discount)

Udemy Courses:

Spring: https://go.telusko.com/udemyteluskospring
Java:- https://go.telusko.com/udemyteluskojava
Java Spring:- https://go.telusko.com/Udemyjavaspring
Java For Programmers:- https://go.telusko.com/javaProgrammers
Python : https://go.telusko.com/udemyteluskopython
Git : https://go.telusko.com/udemyteluskogit
Docker : https://go.telusko.com/udemyteluskodocker

For More Queries WhatsApp or Call on : +919008963671

website : https://courses.telusko.com/

Instagram : https://www.instagram.com/navinreddyofficial/
Linkedin : https://in.linkedin.com/in/navinreddy20
TELUSKO Android App : https://bit.ly/TeluskoApp

In this lecture we are discussing about Dictionary:
-- if you want to accessing the data by using key then we are using dictionary
-- Dictionary uses key and value pair
key and value
in python
data={1:'Navin',2:'kiran',4:'Harsh'} # 1 is key and Navin is value and 2 is key and kiran is value and 4 is key and Harsh is value

property of dictionary:
-- key must be immutable and unique
# immutable means we can't change the value
# unique means we can't repeat the key
-- value can be anything
-- we can access the value by using key
-- we can't access the value by using index
-- we can't access the value by using value


fetching the value from dictionary
data[4] # we can access the value by using key here key is 4
data[3] # you get error because key is not present in dictionary

get() method:
-- we can access the value by using get() method
-- if key is present in dictionary then it will return the value
-- if key is not present in dictionary then it will return None
data.get(1)
data.get(3) # not get anything
print(data.get(3)) # it will return None
data.get(1,'Not Found')
data.get(3,'Not Found')

use of zip() method:
-- we can combine the two list by using zip() method
-- it will return the tuple
keys = ['Navin','Kiran','Harsh']
values=['Python','Java','JS']

use of dict() method:
-- we can convert the tuple into dictionary by using dict() method
data=dict(zip(keys,values))
data['Kiran']
data['Monika'] # it will give error because key is not present in dictionary

add the value in dictionary:
data['Monika']='CS'
data

delete the value from dictionary:
del data['Harsh']

Nested Dictionary:
-- we can store the dictionary inside the dictionary
prog={'JS':'Atom','CS':'VS','Python':['Pycharm','Sublime'],'Java':{'JSE':'Netbeans','JEE':'Eclipse'}}
prog
prog['JS']
prog['python'][1]
prog['Java']
prog['Java']['JEE']


Spring Full Course : https://courses.telusko.com/learn/Spring5?
Python for Beginners :- http://bit.ly/3JOLQhl

Rest API in Spring Boot : https://goo.gl/5Wgsk6
Restful Web Services Tutorial : https://goo.gl/3mosnz
Spring Boot Tutorials : https://goo.gl/7894NE


Editing Monitors :
https://amzn.to/2RfKWgL
https://amzn.to/2Q665JW
https://amzn.to/2OUP21a.

Editing Laptop :
ASUS ROG Strix - (new version) https://amzn.to/2RhumwO
Asus vivoBook :https://amzn.to/2wS0Hpt

Camera : https://amzn.to/2OR56AV
lens : https://amzn.to/2JihtQo

Mics
https://amzn.to/2RlIe9F
https://amzn.to/2yDkx5F
https://amzn.to/2WYqLde

Java:- https://bit.ly/JavaUdemyTelusko
Spring:- https://bit.ly/SpringUdemyTelusko

More Learning :

Java :- https://bit.ly/3x6rr0N
Python :- https://bit.ly/3GRc7JX
Django :- https://bit.ly/3MmoJK6

JavaScript :- https://bit.ly/3tiAlHo
Node JS :- https://bit.ly/3GT4liq

Rest Api :-https://bit.ly/3MjhZwt
Servlet :- https://bit.ly/3Q7eA7k
Spring Framework :- https://bit.ly/3xi7buh
Design Patterns in Java :- https://bit.ly/3MocXiq
Docker :- https://bit.ly/3xjWzLA

Blockchain Tutorial :- https://bit.ly/3NSbOkc
Corda Tutorial:- https://bit.ly/3thbUKa
Hyperledger Fabric :- https://bit.ly/38RZCRB

NoSQL Tutorial :- https://bit.ly/3aJpRuc
Mysql Tutorial :- https://bit.ly/3thpr4L

Data Structures using Java :- https://bit.ly/3MuJa7S
Git Tutorial :- https://bit.ly/3NXyCPu

Donation:
PayPal Id : navinreddy20
https://www.telusko.com