i want to install the command sudo apt-get install python-dev-is-python2 python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev
and the output is Reading package lists...Done Building dependency tree... Done Reading state information...Done
Package python-numpy is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source.
What can I do? Thanks a lot