What is lambda function in Python and why do we need it?

Asked by Last Modified  

2 Answers

Learn Python

Follow 2
Answer

Please enter your answer

Sukruti

Crafting Seamless User Experiences with Full-Stack React Expertise

A lambda function in Python is an anonymous function defined using the lambda keyword. It is a concise way to create functions without a name, typically used for short, simple operations. Syntax lambda arguments: expression Arguments: Input parameters to the function. Expression: A single-line...
read more
A lambda function in Python is an anonymous function defined using the lambda keyword. It is a concise way to create functions without a name, typically used for short, simple operations. Syntax lambda arguments: expression Arguments: Input parameters to the function. Expression: A single-line operation or computation performed. Example # Lambda to add two numbers add = lambda x, y: x + y print(add(3, 5)) # Output: 8 Why Do We Need Lambda Functions? 1. Concise: Useful for short, one-time functions without defining them explicitly. 2. Inline Use: Commonly used as arguments for higher-order functions like map(), filter(), and sorted(). 3. Improves Readability: Reduces boilerplate code when writing simple operations. Common Use Cases 1. With map(): nums = [1, 2, 3] squares = map(lambda x: x**2, nums) print(list(squares)) # Output: [1, 4, 9] 2. With filter(): nums = [1, 2, 3, 4] evens = filter(lambda x: x % 2 == 0, nums) print(list(evens)) # Output: [2, 4] 3. With sorted(): data = [('apple', 2), ('banana', 1)] sorted_data = sorted(data, key=lambda x: x[1]) print(sorted_data) # Output: [('banana', 1), ('apple', 2)] While lambda functions are useful for simplicity, use named functions for complex logic to enhance readability. read less
1 Comments
Dislike Bookmark

I am online Quran teacher 7 years

a keyword in Python for defining the anonymous function.
Comments
Dislike Bookmark

Related Questions

How do I learn Python?
Start with online tutorials, books, and practice coding. Join communities and work on projects to improve.
Kirti
0 0
6

I am working in a nontechnical field and i want to  switch this job and work in a technical field but I am not able to decide where to start. I want to learn, but what in Python?
I can help you make a blasting entry in technical profile. You can learn Informatica+Oracle and one real time project with me. It should be enough for your future growth.
Raksha

What are major difference between JAVA & Python? Where you would recommend to use JAVA and where need to use Python?
Python is one of the most used programming language than Java. With the recent Popularity of the Machine learning, Artificial intelligence and Data science Python takes the first place of the Top 5 programming...
Amit Kumar
0 0
5
What is Python primarily used for?
Python is primarily used for the following:Python libraries are used in Machine Learning, Deep Learning, Data Science, Artificial Intelligence fields.Python frameworks such as Django and Tkinter are used...
Raja
0 0
6

I have passed Btech Electronics and Communication in 2015 and as you all know in ECE there is little knowledge of programming. And i want to learn Python from scratch. How much time it'll take to get a job after learning Python.
For Python, ideally, it takes two months for completing the syllabus. Then it needs practice. B.Tech Electronics with no computer science background can also learn python. It does not require additional...
Arun

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

Ask a Question

Related Lessons

MongoDB StartUp
P

Priyaraj

0 0
0
Things to learn in Python before choosing any Technological Vertical
Day 1: Python Basics Objective: Understand the fundamentals of Python programming language. Variables and Data Types (Integers, Strings, Floats, Booleans) Basic Input and Output (using input()...

Sumit Kumar Som

0 0
0
Relational operators
Operation Syntax Function Ordering a < b lt(a, b) Ordering a <= b le(a, b) Equality a == b eq(a, b) Ineqality a != b ne(a, b) Ordering a >= b ge(a, b) Ordering a > b gt(a, b)

Ram Kumar

0 0
0
Benefits of Design Patterns in Application Development
Application developments is a tedious job. Programmers write code and test it again and again to make sure their software works fine. So designing complex software is a hard nut to crack. Skilled programmers...

Shibaji Debnath

2 0
0
Use IPython shell for better understanding of python
Hi All, Even though there are many editors like IDLE, PyDev, PyCharm are available for python, it is very advantageous to use ipython as an interactive shell for Pyhon. How to install it? pip install...
S

Sudheer S

0 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 >

Top 5 Skills Every Software Developer Must have

Software Development has been one of the most popular career trends since years. The reason behind this is the fact that software are being used almost everywhere today.  In all of our lives, from the morning’s alarm clock to the coffee maker, car, mobile phone, computer, ATM and in almost everything we use in our daily...

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 Coimbatore
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