Automatically clean up cached downloads

Background

According to the documentation, the download_dir directory "is a temporary cache, and can be cleaned up from time to time."

Details

If the download_dir directory is a temporary cache, wouldn't it make sense for the default to be %TEMP%\Python (or something similar), rather than a subdirectory of the global_dir directory?

Why?

1. Files in %TEMP% should be assumed to be temporary (hence the name), so wouldn't it make sense to put temporary downloads there?

2. Files in %TEMP% are, I believe, subject to the Windows automatic "clean up temporary files" feature, aren't they? In this way, old downloads would get cleaned up automatically, wouldn't they? (I'm not an expert on this feature, so I may be all wet here.)

I'm new to this project, so I'm sure others will set me straight if I'm way off here...

Comienza rastreando dónde se definen y leen los valores predeterminados de download_dir y global_dir, y lee la documentación enlazada sobre la configuración administrativa de Windows. Comprueba cómo afecta la limpieza de archivos temporales de Windows a la ubicación propuesta; se considerará terminado cuando haya una ubicación predeterminada acordada, un comportamiento documentado y pruebas o una verificación de la configuración resultante.