Part 5: Functions, Modules & File I/O in Python
Functions, Modules & File I/O in Python These next concepts incredibly useful for organising code and working with external data. Let’s explore how Python handles functions, modules, and file operations - all essential skills for financial analysis and reporting. Defining and Calling Functions Functions are reusable blocks of code that perform specific tasks. They help keep your code DRY (Don’t Repeat Yourself) and make it more maintainable. Basic Function Syntax def function_name(parameters): """Docstring explaining what the function does.""" # Function body return result # Optional Here’s a simple function that calculates compound interest: ...