How can I export images from Dropbox to OpenAlpr image_path?

I can't help with the OpenAlpr side of things as that's not made by Dropbox, but Dropbox does offer an API you can use for listing, uploading, and downloading files to/from Dropbox, among other operations. You can find everything you need to get started with the Dropbox API, including documentation, tutorials, and SDKs here:

https://www.dropbox.com/developers

For example, we do offer an official Python SDK:

https://github.com/dropbox/dropbox-sdk-python

With that, you can use the files_download or files_download_to_file methods to download files, for instance:

• https://dropbox-sdk-python.readthedocs.io/en/latest/api/dropbox.html#dropbox.dropbox.Dropbox.files_download
• https://dropbox-sdk-python.readthedocs.io/en/latest/api/dropbox.html#dropbox.dropbox.Dropbox.files_download_to_file