Functional programming is a type of programming that focuses on functions as the main building blocks of a program. In functional programming, the emphasis is on writing functions that take input data and produce output data, without any side effects. This means that a function should not modify any data outside of its scope, but instead, it should return a new value based on the input data.

In Python, functional programming involves using higher-order functions, such as map(), filter(), and reduce(). These functions take one or more functions as arguments and apply them to input data. For example, you could use the map() function to apply a function to each element of a list, or you could use the filter() function to remove elements from a list that don't meet a certain criteria.

Functional programming is useful for tasks that involve manipulating large amounts of data. It can also be useful for parallel programming, where multiple functions can be executed simultaneously.
Python Classes in Pune