Question
Explain functions in Python. Distinguish between built-in and user-defined functions with examples and Write a Python program to find the largest of three numbers using a user-defined function and explain the logic.
Answer :
Word Count : 1056
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In Python, functions are reusable blocks of code designed to perform a specific task. Functions help in breaking a program into smaller, manageable, and modular sections, improving code readability and maintainability. They allow programmers to avoid repetition, implement abstraction, and organize complex programs efficiently. A function in Python is defined using the `def` keyword, followed by the function name, parentheses that may include parameters, and a colon. The body of the function contains the set of statements to be executed when the function is called. Functions may also return values using the `return` statement. Python functions can be classified into two main types: built-in functions and user-defined functions. Built-in functions in Python are pre-defined functions that come with the Python language. These functions are ready to use and provide essential functionality for various tasks without the need for the programmer to write their own code from scratch. Examples of built-in functions include `print()`, which outputs data to the console; `len()`, which returns the length of a sequence like a string, list, or tuple; `sum()`, which returns _________ _________ ____ _____ ____ ____ _________ _______ ______ _________.
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