UrbanPro

Learn Python Training from the Best Tutors

  • Affordable fees
  • 1-1 or Group class
  • Flexible Timings
  • Verified Tutors

Search in

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

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

I am online Quran teacher 7 years

a keyword in Python for defining the anonymous function.
Comments

Related Questions

X=4 Y=X+4 Y=INT(STR(Y)+'2') PRINT(Y)
Here is how it works: 1. X takes the value of 4 2. Y takes the value of 8 ( Y=X+4 ) 3a. str(Y) is evaluated as '8' 3b. next, str(Y)+'2' is evaluated - this gives us '82' 3c. next, INT('82') gets...
Annu
Which Python should I learn, Python 2.7 or 3.x?
Better to learn latest versions always. You cannot find much differences. If you learn one version remaining versions you can understand easily.
Swapna
0 0
7
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
If I get trained in python is there any chance to get a job as a fresher
While no one can guarantee getting a job after being trained as it depends on the trainer and the person being trained but yes, getting a job as a fresher in python is relatively easy compared to other...
Sai
0 0
6
Why is Python so popular despite being so slow?
Most programmers nowadays focus on the readability and quality of the code to maintain and update the software easily in future. In addition to being simple and easy-to-learn, Python enables programmers...
I T Roxaana
0 0
5

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

Ask a Question

Related Lessons

Python Puzzle: Find The Checksum To Ensure Flawless Data Transfer
Find below the puzzle: sampleInput='''5195 753 2468''' The first item's(5195) largest and smallest values are 9 and 1, and their difference is 8. The second item's(753) largest and smallest values...

Python programming - Applications
If you’re thinking of learning Python? Or if you recently started learning it? You may be asking yourself: "What exactly can I use Python for?" There are so many applications for python, but there...

Writing Simple Programs in Python
Writing a program, especially for a beginner, is a challenging and daunting task! He/She knows the language but is not able to start. To make things simple, it is advisable to follow a process that is...

Using the Math Library in Python
Using the Math Library in Python. Python provides many useful mathematical functions in a special math library. A library is a module that contains some useful definitions. We now consider...

Be A Python Dev
Currently, in the programming world, Python is one of the languages with a high rising demand profile. And this article will explain why that isn’t slowing down in the foreseeable future.Python...

Recommended Articles

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 >

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 >

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 >

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 >

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
X

Looking for Python Training Classes?

The best tutors for Python Training Classes are on UrbanPro

  • Select the best Tutor
  • Book & Attend a Free Demo
  • Pay and start Learning

Learn Python Training with the Best Tutors

The best Tutors for Python Training Classes are on UrbanPro

This website uses cookies

We use cookies to improve user experience. Choose what cookies you allow us to use. You can read more about our Cookie Policy in our Privacy Policy

Accept All
Decline All

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more