Python Built-In Functions: Key Uses & Examples

Built-in functions in Python refer to functions that are already defined in the Python interpreter, which can be called directly without needing to import additional modules. These built-in functions can be used to perform various tasks, such as mathematical calculations, string manipulation, list operations, etc.

Some commonly used built-in Python functions include:

1. print(): Used to display specified content on the screen.
2. len() function: Returns the length or number of items in an object.
3. type(): returns the type of the object.
4. int(), str(), float() are used to convert other types into integers, strings, and float numbers, respectively.
5. range(): returns an iterable object containing numbers within a specified range.
6. max() and min(): return the maximum and minimum values from the given set of values.
7. sum(): returns the sum of all elements in an iterable object.
8. input(): Obtaining user input from standard input.
9. open(): This function opens a file and returns a file object.
10. sorted(): sorts the iterable object.

You can refer to the official Python documentation or use the help() function to find information on how to use these built-in functions. Choose the appropriate built-in function based on your specific needs to complete the task.