Comment 9 for bug 2062065

I can confirm that python3-pycallgraph from focal-proposed has fixed the bug for me.

Test done:

install python3-pycallgraph and try to execute "pycallgraph --help" and confirmed that it still fails.

Added focal-proposed to apt sources.
install python3-pycallgraph from focal-proposed.

Followed the testplan and tested "pycallgraph" with the basic.py and confirmed it creates the two png files.

Package tested:

$ apt-cache policy python3-pycallgraph
python3-pycallgraph:
  Installed: 1.1.3-1ubuntu0.1
  Candidate: 1.1.3-1ubuntu0.1
  Version table:
 *** 1.1.3-1ubuntu0.1 100
        100 http://gb.archive.ubuntu.com/ubuntu focal-proposed/universe amd64 Packages
        100 http://gb.archive.ubuntu.com/ubuntu focal-proposed/universe i386 Packages
        100 /var/lib/dpkg/status
     1.1.3-1 500
        500 http://gb.archive.ubuntu.com/ubuntu focal/universe amd64 Packages
        500 http://gb.archive.ubuntu.com/ubuntu focal/universe i386 Packages