Types of Sub Programs in Python

Table of Contents

They are very important. These are called as Functions.

1. Built-in Functions

- Python provides a lot of built-in functions that are available to use without the need for additional definitions.
- These functions cover a wide range of tasks and are an integral part of the Python language.

print(), len(), input(), range(), and max()

Types of Sub Programs in Python

Taken from python.org

1. len function in python

You can find the length of a string using the len() function in python

Example

str = “Hello World!”

print(len(str))

Output

- User-defined functions (sub programs) are functions created by the programmer to perform specific tasks.
- They are defined using the def keyword and can have parameters and return values.
- User defined functions allow you to encapsulate and reuse code.

1. User defined functions allow you to break down a complex program into smaller, manageable modules. Each function can be designed to perform a specific task, making the code easier to understand and maintain.
2. Functions can be reused across different parts of a program or even in different programs. So that reusability is another advantage of user defined functions
3. Debugging is very easy. When a bug or error occurs in a program, by having well-structured functions can simplify the debugging process.
4. Functions can accept parameters (arguments), allowing you to customize their behavior based on input values.
5. Functions have their own local scope, which means variables defined within a function are typically limited to that function’s scope.