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
free-monad
eventstoredb
colorbrewer
node.js-tools
processing
jspdf
dts
pywikibot
communication-protocol
scikit-survival
gmail-promo-tab
swiftgen
jqplot
wamp-protocol
jaxb2-annotate-plugin
python-annoy
comsol
android-beam
swiftui-alert
identityserver2
facebook-graph-api
angularjs-ng-transclude
nodelist
coinbase-php
excel-charts
external
labelme
spring-form
sfdx
glitch-framework