PYTHON LAMBDA FULL

For example, we can write a lambda function that turns all the lowercase words into uppercase words.īut since we just want to do this once and we don’t need to do it over and over again, we could use a lambda function for this. So what we could quite conceivably want to do is manipulate this list in a specific way and return out another list. However, we can use these functions in more realistic applications such as when working with lists. Such kinds of lambda functions only fit into other functions such as the map() and the filter() functions in python or other places like that.

PYTHON LAMBDA FULL

Now, generally speaking, you wouldn’t want to assign the name of the function every other time because that resembles writing a full function in python. Using lambda we can write a function with the same output like the one shown above. So basically lambda functions can be of use in cases where we do not want to repeat over and over again and they fit in different parts and inside things like the map and the filter functions when working with lists. In a Python lambda function, we would do exactly the same thing. We would then pass x as a parameter and return twice its value. So to write this using the normal user-defined python function, we would do def, followed by the name of the function which in this case we will call twice. So to write a Python lambda expression or function, we would do the word lambda followed by x which is the parameter/argument, a semicolon and then an expression. Lambda functions only have one expression but can have any number of arguments.Ĭompared to a standard user-defined function lambda functions have a few more constraints. Lambda functions are essentially small and anonymous functions used in python code to perform specific tasks.