My Ubuntu 21.04 came with preinstalled with python 3. I installed python 2.7 in parallel since all my programs are in python 2.7. In my modules, import dateutil
quanteda
stripslashes
boost-phoenix
django-viewflow
avisynth
nxopen
bitmapshader
savedstateviewmodelfactory
wmv
icx
guava
flink-cep
holoviews
dxt
drools-guvnor
filtered
byebug
multi-table-inheritance
wowza
reach-router
github-check-run
flexdashboard
android-instant-apps
polyfills
mediawiki-extensions
beagle
traefik-plugins
panda3d
xdt-transform
msflexgrid