[Python-apps-team] Bug#930270: Graphical debug session does not start

[computer.enthusiastic]

Subject: mu-editor: graphical debug session does not start
Package: mu-editor
Version: 1.0.2+dfsg-2
Severity: normal

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
I wrote a print('Hello world') test program and I tried to start a
debugging session

   * What exactly did you do (or not do) that was effective (or
     ineffective)?
The debug button of graphical interface does not start the debug mode
of mu-editor

   * What was the outcome of this action?
The following error showed in the "running" lower pane of mu-editor:

Traceback (most recent call last):
  File "/usr/share/mu-editor/mu/mu-debug.py", line 4, in <module>
    from mu.app import debug
ModuleNotFoundError: No module named 'mu'

---------- FINISHED ----------
exit code: 1 status: 0 Unable to connect to the Python debugger.


   * What outcome did you expect instead?
I expected the start of interactive debugger.

*** End of the template - remove these template lines ***

-- System Information:
Debian Release: 10.0
  APT prefers testing-debug
  APT policy: (500, 'testing-debug'), (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.19.0-5-amd64 (SMP w/2 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE,
TAINT_UNSIGNED_MODULE
Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8),
LANGUAGE= (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages mu-editor depends on:
ii  fonts-inconsolata           001.010-5
ii  python3                     3.7.3-1
ii  python3-appdirs             1.4.3-1
ii  python3-guizero             0.6.0+dfsg1-1
ii  python3-matplotlib          3.0.2-2
ii  python3-nudatus             0.0.4-1
ii  python3-pgzero              1.2.post4+dfsg-1
ii  python3-pil                 5.4.1-2
ii  python3-pycodestyle         2.4.0-2
ii  python3-pyflakes            2.0.0-1
ii  python3-pyqt5               5.11.3+dfsg-1+b3
ii  python3-pyqt5.qsci          2.10.4+dfsg-2
ii  python3-pyqt5.qtchart       5.11.3+dfsg-1
ii  python3-pyqt5.qtserialport  5.11.3+dfsg-1+b3
ii  python3-qtconsole           4.3.1-1
ii  python3-requests            2.21.0-1
ii  python3-semver              2.0.1-3
ii  python3-serial              3.4-4
ii  python3-uflash              1.2.4+dfsg-1

mu-editor recommends no packages.

Versions of packages mu-editor suggests:
pn  mu-editor-doc   <none>
pn  python3-pigpio  <none>

-- no debconf information