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Python Lambda Functions (Summary)
Now that you’ve completed this step-by-step course, you know how to use Pythonlambda functions! You are now able to do all of the following:
- Write Python lambdas and use anonymous functions
- Choose wisely between lambdas or normal Python functions
- Avoid excessive use of lambdas
- Use lambdas with higher-order functions or Python key functions
Python lambdas are like salt. A pinch in your spam, ham, and eggs will enhance the flavors, but too much will spoil the dish. If you have a penchant for mathematics, you may have some fun exploring the fascinating world oflambda calculus.
Take the Quiz: Test your knowledge with our interactive “Python Lambda Functions” quiz. You’ll receive a score upon completion to help you track your learning progress:
Interactive Quiz
Python Lambda FunctionsPython lambdas are little, anonymous functions, subject to a more restrictive but more concise syntax than regular Python functions. Test your understanding on how you can use them better!
00:01Well done! You’ve completed this course on using lambda functions.You found out what a lambda function is.You found out where lambda functions are useful.
00:12You’ve created some first lambda functions of your own.
00:16You’ve seen how lambda functions are used in conjunction with methodssuch as.sort() and functions such asfilter(),map(), andreduce().
00:26And you’ve seen how to test lambda functions.I hope you found this course useful and we’ll see you again soon at realpython.com.
john09 onAug. 28, 2019
Very nice. Have seen “lambda” keyword and used it a little, not knowing exactly what’s going on. Great explanation.
k0ng0 onAug. 29, 2019
Good intro to lambdas. keep them coming.
Najmeh onSept. 1, 2019
Thanks a lot.
Paul onSept. 2, 2019
Why use map or filter with the availability of comprehensions?
Mallesham Yamulla onSept. 2, 2019
Many thanks for the tutorial, and I’m highly recommending this tutorials to the audience who would like brush up their knowledge on writing lambda function.
Sergio onSept. 2, 2019
Nice intro to lambdas. Thanks for sharing it!
dobrycheva onSept. 24, 2019
thank you! :)
Pakorn onJan. 15, 2020
Great tutorial, Thanks!
Shubhro onJan. 27, 2020
Great tutorial on lambdas!
Ariadna onApril 26, 2020
Great course!! Very clear!!
Mark onJune 22, 2020
Thanks, Great material
sistersolstice onJuly 11, 2020
Wonderful! This provided so much clarity to lambda. I haven’t used it much but will start now since I know how it works. Thanks.
a5zima onJuly 20, 2020
This is a great idea to combine sort/map/filer/reduce with the lambda explanation! Finally I understand the concept and power of a lambda function. Thank you.
cottonbytes onAug. 9, 2020
Nice! Well explained! Thanks!
Shuai onMay 6, 2021
Thanks for the great course!
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