5 Questions
What is the syntax for a lambda function in Python?
lambda arguments : expression
How many arguments can a lambda function take?
Any number of arguments
What does the following lambda function do: $x = ext{lambda} hinspace a, b : a * b$?
Multiplies argument a with argument b
In which scenario would you use lambda functions according to the text?
When an anonymous function is required for a short period of time
What does the following code do: $mydoubler = ext{myfunc}(2); hinspace ext{print}(mydoubler(11));$?
Multiplies the number 11 by 2
Study Notes
Lambda Functions in Python
- A lambda function in Python is a small anonymous function that can take any number of arguments, but can only have one expression.
- A lambda function can take any number of arguments, but it can only have one expression.
- The syntax for a lambda function is:
lambda arguments: expression - The lambda function
$x = ext{lambda} hinspace a, b : a * b$takes two argumentsaandband returns their product. - Lambda functions are useful when you need a small, short-term function that is not worth defining a separate named function for.
- The code
mydoubler = ext{myfunc}(2); hinspace ext{print}(mydoubler(11));defines a lambda functionmyfuncthat takes one argument, multiplies it by 2, and then prints the result of multiplying 11 by 2.
Test your knowledge of Python lambda functions with this quiz. Learn about the syntax and usage of lambda functions to create small anonymous functions with a single expression.
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