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A lambda function can take any number of arguments, but can only have one expression. Syntax. lambda arguments : expression. The expression is executed and the result is returned: Example Get your own Python Server. Add 10 to argument a, and return the result: x = lambda a : a + 10. print(x (5)) Try it Yourself »
The functionality of lambda functions in Python is to create small, anonymous functions on the fly. They are often used in situations where creating a full-fledged function using def would be overkill or where a function is needed for a short period and doesn’t need a name. When to use lambda? Lambda functions are suitable for:
You now know how to use Python lambda functions and can: 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
lambda is a keyword in Python for defining the anonymous function. argument(s) is a placeholder, that is a variable that will be used to hold the value you want to pass into the function expression. A lambda function can have multiple variables depending on what you want to achieve.
What are Python lambda expressions. Python lambda expressions allow you to define anonymous functions. Anonymous functions are functions without names. The anonymous functions are useful when you need to use them once. A lambda expression typically contains one or more arguments, but it can have only one expression.
In Python, a lambda function is a special type of function without the function name. For example, lambda : print('Hello World') Here, we have created a lambda function that prints 'Hello World'. Before you learn about lambdas, make sure to know about Python Functions.
You can use functions in programming to store a piece of code that can be invoked when needed. This prevents you from retyping the same logic every time you need that code. In this article, you'll learn how to create and use anonymous functions in Python. They are also called lambda functions.