Functions in Python
Functions are reusable blocks of code that perform a specific task. They help organize programs, avoid repetition, and make code easier to test and debug.
Think of a function as a machine: you give it inputs (parameters), it does work, and gives back an output (return value).
Defining a Function
Use def keyword, name, parentheses, colon, and indented block.
Parameters and Arguments
Parameters are variables in the function definition. Arguments are values passed when calling.
Multiple parameters:
Return Statement
Use return to send a value back from the function.
Default Parameters
*args and **kwargs
*args for arbitrary positional arguments, **kwargs for keyword arguments.
Quick Quiz
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