[mythtv] Python 3 support for 30 ?

[Bill Meek]

On 1/24/20 10:46 AM, Richard Shaw wrote:
> 
> That resulted in a build error...
> 
> mythburn.cpp: In member function 'void MythBurn::runScript()':
> mythburn.cpp:948:19: error: 'PYTHON_EXE' was not declared in this scope
>    948 |     commandline = PYTHON_EXE;
>        |                   ^~~~~~~~~~

Support for Python v3 is intended for MythTV v31 only. The error above is
because at ./configure time, the Python executable is set based on the
--python switch (or its default of python3.) This is used in a number of
mythProgramNames that call Python scripts as above.

There are a lot more commits above Pull Request 182. Quick search:

0763e32999 Python Bindings: support --systemd-journal logging
186e24a018 Python Bindings: use configurable "python" choices
bafc80d9ff Python Bindings: Fix 3 exceptions and remove unused query
f1d8870c1d Python Bindings: adds python3 compatibility to Music scripts
871accb425 Add the 'recordedfile' table to python bindings and make use of it
a2ae8119b4 Silence warning on exit of python if a mysql cursor is in use
d6af02f8e9 Add Compatibility to Python3 for metaclasses
fcc4990946 MythTV: Add compatibility to python3 for '__repr__' methods
4d9c4ea5ef TMDB3: Add compatibility to python3 for '__repr__' methods
623778ee2c Update Movie Grabber tmdb3.py to meet python3 compatibility, again
7234e888f5 Python Bindings: Remove deprecation warnings (python3)
9be0f39afa Fix compatibility to python3 in 'VideoGrabber.grabInetref'.
4eb515926f Fix missing conversion to python3 in mythwikiscripts.
8ec6a1d1f4 Make mythpython script compatible to python3.
bca53f0e88 Add compatibility to python3 to tmdb3 module.
834cbb0473 Make mythwikiscripts compatible to python3.
e8ab22178c Fix Python Bindings to be compatible to python3 as well.
9127e3436b Fix mysql connection of the Python Bindings for python3.
378cfe017a Fix check in Python's Job.fromProgram classmethod.
d2d3cb8f76 Python Bindings Recorded.formatPath() bails if airdate is not  set.
1393503938 Various fixes of MythTV Python Bindings in mythproto.py.
35ab79122c Allow storage group paths without trailing slashes in Python  Binding findfile method.
4572f98040 Fix MythSytemEvent class of MythTV's python bindings
771796578b Adapt mythpython's MythXML class to new Services/API.
6333c3bde9 Fix logging in Mythtv's python bindings msearch.py:
8baf4db3f0 Correct typo in MythTV's python binding datetime.fromRfc().
0b5b6b9e46 Update MythTV's python binding 'utility/dt.py' according  patch  from Ticket #13299...
75c2982a1e MythTV python: Class System.system: correct typo.
706f14596d Python Bindings: Set shebangs to the configured python version
8dce45294c HTML/Python Tidy: Clean up various file modes/shebangs
479082eaa6 Python Bindings: Clean-up or delete HardwareProfiler shebangs
bdfb7690ba Python Bindings: switch mythplugins configure to python3
a9dd37c788 Python Bindings: Update version in setup.py
955eb754f5 Python Bindings: Switch default configure selection to python3
5bc77ef100 configure: Remove unnecessary Python packages

Changes to the various shebangs are an important part of the conversion too
and programs will fail without them.

-- 
Bill