Create folder and files on the client's computer

[Elizabeth Sedeño Osorio]

I need to create files and folders on the client's computer, how can I do it?

[Adam (Cloud Platform Support)]

You can't. An App Engine app runs somewhere in one of Google's data centers and has no access to the client's computer. Nor should it, when you consider the security implications of such a thing.

However, a web app can store its own data locally within the user's browser, with HTML5 web storage. If you only need to store a few variables, you can also use cookies.