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
fortran90
postgres-9.6
geom-raster
spring-social-twitter
azure-storage-account
armv8
android-trafficstats
template-classes
miktex
developer-tools
slowmotion
columnheader
blend-mode
microformats
snmp4j
systemtime
volt
trap-signal
atmega16
listmodel
cgcolor
content-negotiation
legend
component-scan
android-edittext
gitstack
nscollectionlayoutsection
flutter-test
xcode11.5
geographic-distance