The Python Scripts window lets you find and execute existing Python scripts. Simply search, select and hit Execute.
Depending on what you use as a basis for your project, Python scripts should be saved in different folders.
The Menu can be accessed via the icon on the top-right corner of the tool. When clicked, it reveals the following sub-menus:
The following options allow users to use spacers in positioning their toolbars.
Lists all default and custom toolbars (if any) created for this tool, allowing users to select which toolbar they'd like to hide or display.
Opens the documentation page for this tool.
For more information on how to create Python plugins, please see this page.