Can't Access Terminal

Question

I was clumsily trying to update python on my system. My terminal will no longer open, although I'm thankfully still able to use xterm.

I say clumsily because I was trying to set python for my user and was using sudo, thereby setting it systemwide without realizing it.

Here's a good symptom of my problem before I keep making it worse:

soverton@osr-ubuntu-2:!$ sudo python --version
Python 3.8.1
soverton@osr-ubuntu-2:!$ python --version
Python 3.7.2
soverton@osr-ubuntu-2:!$ lsb_release -a
bash: /usr/bin/lsb_release: /usr/bin/python3: bad interpreter: No such file or directory

EDIT

Per the comments, here is my Traceback from running gnome-terminal in xterm. None of the answers suggested here resolved the circular import.

soverton@osr-ubuntu-2:!$ gnome-terminal
Traceback (most recent call last):
 File "/usr/bin/gone-terminal", line 9, in <module>
  from gi.repository import GLib, Gio
 File "/usr/lib/python3/dist-packages/gi/__init__.py", line 42, in <module>
  from . import_gi
ImportError: cannot import name '_gi' from partially initialized module 'gi' (most likely due to a circular import) (/usr/lib/python3/dist-packages/gi/__init__.py)```