After I converted all apps to user python3, I entirely removed python2 from my dev environment only to come to realize that python2 is still necessary as it has previously reported at https://stackoverflow.com/questions/75546135/app-engine-python-3-d...

The legacy python 2.7 environment has a support for debugging in the development server that is documented here. It does not work exactly as documented but people have posted in Stack Overflow how to get it to work with some slight modifications.Does...

Legacy app engine python 2.7 supports an application at `google.appengine.ext.admin.application` that can be used in the config file with a route to create a mini app that among other things has a console textbox. This is super useful for quick exper...