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PyViz visualizer is not enabled

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I'm using ubuntu 20.04 (NS-3.29), i'm trying to enable the PyViz visualizer but I faced some problems. I'm trying to install it by using this command

(sudo su root@omar-virtual-machine:/home/omar/workspace/bake/source/ns-3.29# apt-get install python-pygraphviz python-kiwi python-pygoocanvas libgoocanvas-dev ipython) (but I got error ) (Package ipython 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

E: Unable to locate package python-pygraphviz E: Unable to locate package python-kiwi E: Unable to locate package python-pygoocanvas E: Unable to locate package libgoocanvas-dev E: Package 'ipython' has no installation candidate)

After that I tried to install ipython using this command (pip install ipython) and I got Requirement already satisfied: ipython in /usr/lib/python3/dist-packages (7.13.0) Requirement already satisfied: pexpect in /usr/lib/python3/dist-packages (from ipython) (4.6.0)

I don't know how can solve this problem.

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