I migrate a build sever from RHEL 7 to 8. My rhel 7 rpm build spec installs a python file. On the RHEL 7 the rpm build will generate the pyc and pyo files and include them in the rpm package. But on rhel 8 it does not generate the .pyc and .pyo files.

Here is the lines from the spec file.
####################
%define iniDir /etc/init.d
%install

Install Binaries/Scripts

install -m 755 fileManager.py $RPM_BUILD_ROOT%{iniDir}

%files
%attr(755, root, root) %{iniDir}/fileManager.py

%{iniDir}/fileManager.pyc
%{iniDir}/fileManager.pyo

#

On rhel 7 the rpm build prints out these lines
+ /usr/lib/rpm/redhat/brp-strip-static-archive /usr/bin/strip
+ /usr/lib/rpm/brp-python-bytecompile /usr/bin/python 1
+ /usr/lib/rpm/redhat/brp-python-hardlink

On rhel 8 the rpm build prints out these lines.
+ /usr/lib/rpm/brp-strip-static-archive /usr/bin/strip
+ /usr/lib/rpm/brp-python-bytecompile '' 1
+ /usr/lib/rpm/brp-python-hardlink
+ PYTHON3=/usr/libexec/platform-python
+ /usr/lib/rpm/redhat/brp-mangle-shebangs

I did tried one of these shebangs #!/usr/bin/python2.7 or #!/usr/bin/python3.6 on the fileManager.py but still don't see the rpm build generates and install the .pyc and pyo files.

I can work around by calling the shell python command from jenkins file generate the pyc and pyo files and copy them to /etc/init.d before calling the rpm build . Then the rpm build will install the .py, pyc, pyo files.

Does anyone knows how why the RHEL 8 rpm build does not generate the .pyc and .pyo ?

Thanks for reading it.
-Tom Pham