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
hazard
size-t
interpreted-language
videochat
dbase
internal-compiler-error
autostart
tetgen
imagedatagenerator
stdatomic
exclude-constraint
fatal-error
act
phpspreadsheet
core-ui
scriptlab
scratchbox
socket.io
proxy
tree-traversal
columndefinition
nv12-nv21
mahalanobis
ipython-notebook
od
onclick
upnp
jupyter-irkernel
compiler-theory
amazon-msk