how to extract 7zip file in colab
# If your file is compressed in .tar.7z, then try this
!apt-get install p7zip-full
!p7zip -d file_name.tar.7z
!tar -xvf file_name.tar
# elif if your file is just compressed in .7z, then try this
!apt-get install p7zip-full
!p7zip -d file_name.7z
# else if you files is just a normal .zip file, then try this
!unzip -q file_name.zip
============================== Hope it helped ^_~ ==============================