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
android-vitals
structured-programming
jcomponent
spatial-data-frame
spinnaker-halyard
conda-forge
window-functions
viewresult
java-6
windows-firewall-api
immutable-x
rule
cross-join
functional-programming
memory-layout
viper
dash-bio
acceleratorkey
eclipse-ditto
instar
pkware
pentaho-report-designer
count-data
numpyro
terminfo
terraform-template-file
character-set
local-network
usb-drive
monte-carlo-tree-search