What is an example of a practical use of a dictionary(map) in a Python 3 program?

Asked by Last Modified  

1 Answer

Learn Python

Follow 2
Answer

Please enter your answer

Ashutosh Singh

Maths teacher for 9-12th class as well as IIT JEE.

Dictionary in python are used to store key-value pair. Now suppose their are 5 students in a class, having roll no. 1 to 5. Each have Maths, Physics & chemistry as subject. Now suppose we want to PROCESS this data, for example we want to arrange them in decreasing order of marks in Maths, i.e. student...
read more
Dictionary in python are used to store key-value pair. Now suppose their are 5 students in a class, having roll no. 1 to 5. Each have Maths, Physics & chemistry as subject. Now suppose we want to PROCESS this data, for example we want to arrange them in decreasing order of marks in Maths, i.e. student having highest marks marks in maths is at the top of the list. We can write this data in the following way d={1:[54,67,88], 2:[24,67,56], 3:[99,12,78], 4:[55,33,44], 5:[11,58,79]} # where first element of each list is marks of Maths f=sorted(d,key=d.get, reverse=True) for r in f: print(r, d[r][0]) # This gives the output of roll number of students with max to min marks in Maths # OUTPUT 3 99 4 55 1 54 2 24 5 11 I hope this helps you understand how we can use dictionaries in python. read less
Comments
Dislike Bookmark

Related Questions

As a fresher I have done Python training, but hardly getting response from any company. What should I do?
only having training in Python is not enough to be called for intervew. Better you should get real time certification course form reputed organisation with smart hand-on real project exposure. Try to have...
Yamini
0 0
6
I am web developer with HTML and CSS knowledge, want to move a step ahead in programming web/desktop/mobile applications, which language is better, Python, Java or C#?
With knowledge of only HTML and CSS, Java and C# would be very difficult to catch up. Choose Python not just because it is easy but more relevant when combined with Django web framework. Even job opening...
Thomas

which is beat among Rpa python Oracle In present situation , suggestion 
I would suggest you go for Python, as its one of the dominant language, you can do almost everything with Python. It's easy to learn and implement. I see lots of Job opportunity too.
K

Is learning Tally good or is learning Advanced Excel and Python good? Which one will be better for getting a job? What would be the general cost of learning Tally, Advanced Excel and Python? Which are the best tutors or institutes near to Kudlu Gate and Electronic City?

 

 
As a beginner, you should go with Advance Excel and MIS reporting. After that, you can go for VBA, SQL, and Python in the end. Follow this career path. You will end up being a data analyst and package raging from 8-12lakh pa.
Prabhu

I want to conduct python classes for beginners online with minimal charges. Please advise the procedure. 
Conducting online Python classes for beginners with minimal charges requires leveraging free tools for teaching, keeping overhead low, and focusing on high-value, hands-on learning. Here is the procedure to get started:
Ramesh.k

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Why Python
Python can be used in any futuristics technology A= Analytics Data Science Artificial Intelligence(AI) Neural Network(NN) Natural Language Processing(NLP) Computer Vision(OpenCV) In Analytics...

Mujahed

0 0
0
Small ML Project on Simple Linear Regression
Here is a small Project on Simple Linear Regression

Damodar

0 0
0
Back Reference In Python Regex
What if your interviewer asks about this? We know Regex have some useful functions like: match ( Ex: re.match(pattern,dataSource) ) search ( Ex: re.search(pattern,dataSource) ) sub ...

Logeswaran

0 0
0
Python Demo
https://www.youtube.com/watch?v=8AEhpZ4lbOI

Madhu Nandha

4 1
0
Why is the Hadoop essential?
Capacity to store and process large measures of any information, rapidly. With information volumes and assortments always expanding, particularly from web-based life and the Internet of Things (IoT), that...

Bright Computer Education

1 0
0

Recommended Articles

Top 5 reasons why you should learn Python

Python is one of the most popular programming languages in the world. It is general-purpose, object oriented, high-level programming language used in a number of programming fields. Python is a great programming language to learn as it will introduce you to the world of programming. If you are from the technical background...

Read full article >

What is Applications Engineering all about?

Applications engineering is a hot trend in the current IT market.  An applications engineer is responsible for designing and application of technology products relating to various aspects of computing. To accomplish this, he/she has to work collaboratively with the company’s manufacturing, marketing, sales, and customer...

Read full article >

8 Hottest IT Careers of 2014!

Whether it was the Internet Era of 90s or the Big Data Era of today, Information Technology (IT) has given birth to several lucrative career options for many. Though there will not be a “significant" increase in demand for IT professionals in 2014 as compared to 2013, a “steady” demand for IT professionals is rest assured...

Read full article >

Learn Microsoft Excel

Microsoft Excel is an electronic spreadsheet tool which is commonly used for financial and statistical data processing. It has been developed by Microsoft and forms a major component of the widely used Microsoft Office. From individual users to the top IT companies, Excel is used worldwide. Excel is one of the most important...

Read full article >

Find Python Training classes near you
Python Training classes in Bangalore
Python Training classes in Hyderabad
Python Training classes in Chennai
Python Training classes in Delhi
Python Training classes in Pune
Python Training classes in Mumbai
Python Training classes in Noida
Python Training classes in Kolkata
Python Training classes in Gurgaon
Python Training classes in Jaipur
Online Python Training

Looking for Python Training classes?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you