OrderedDict is in Pythons collections module and is available even on the basic Python 3 server module. You can import it as so:
from collections import OrderedDict
The csv package and pandas are only available on the Full Python 3 environment it seems. I use pandas extensively in many of my apps so I can confirm it works.
If you are on the free tier you can still use an Uplink, which allows you to call code from a remote machine. This remote machine can have any environment you want.