As originally posted as a feature request in the pythonVSCode project:

Would it be possible to automatically expand the docstring without requiring clicking the "info" symbol button?

Current behavior requires you to click the "info" symbol button to view the full docstring:

For comparison, here's how Atom deals with this (always expands the full docstring):

Also, it would be useful to be able to copy paste e.g. a function's arguments from the documentation shown.