Download Decorator -

: When writing custom decorators for report generation, it is best practice to use @functools.wraps to ensure the original function's name and docstring are preserved for debugging and documentation.

: Using decorators allows core business logic (e.g., calculate_sales() ) to remain clean, while the decorator handles logging, execution timing, or formatting the output into a downloadable file. Download Decorator

The "Download Decorator" is a functional programming pattern, primarily used in web frameworks like , to manage file downloads by wrapping a data-generating function with the necessary handling logic . Core Functionality: @render.download : When writing custom decorators for report generation,

: If the function returns a string, it is treated as a path to an existing file on disk. Core Functionality: @render

: It requires parameters like filename (the name of the file presented to the user) and media_type (the MIME type, such as text/csv or application/pdf ). Implementation Best Practices