Document Python 3.7 requirement in README

[znerd]

Suggestion: Document the Python 3.7 requirement in the README file.

[will-gant]

For reference, any version above 3.7.16 will fail to install python/requirements.txt

[puradawid]

Do you mean this error, @will-gant?

Collecting PyYAML<6.0,>=3.0
  Using cached PyYAML-5.4.1.tar.gz (175 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... error
  error: subprocess-exited-with-error

  × Getting requirements to build wheel did not run successfully.
  │ exit code: 1
  ╰─> [43 lines of output]
      running egg_info
      Traceback (most recent call last):
        File "/usr/lib/python3/dist-packages/pip/_vendor/pep517/in_process/_in_process.py", line 363, in <module>
          main()
        File "/usr/lib/python3/dist-packages/pip/_vendor/pep517/in_process/_in_process.py", line 345, in main
          json_out['return_val'] = hook(**hook_input['kwargs'])
        File "/usr/lib/python3/dist-packages/pip/_vendor/pep517/in_process/_in_process.py", line 130, in get_requires_for_build_wheel
          return hook(config_settings)
        File "/usr/lib/python3/dist-packages/setuptools/build_meta.py", line 162, in get_requires_for_build_wheel
          return self._get_build_requires(
        File "/usr/lib/python3/dist-packages/setuptools/build_meta.py", line 143, in _get_build_requires
          self.run_setup()
        File "/usr/lib/python3/dist-packages/setuptools/build_meta.py", line 158, in run_setup
          exec(compile(code, __file__, 'exec'), locals())
        File "setup.py", line 271, in <module>
          setup(
        File "/usr/lib/python3/dist-packages/setuptools/__init__.py", line 153, in setup
          return distutils.core.setup(**attrs)
        File "/usr/lib/python3/dist-packages/setuptools/_distutils/core.py", line 148, in setup
          return run_commands(dist)
        File "/usr/lib/python3/dist-packages/setuptools/_distutils/core.py", line 163, in run_commands
          dist.run_commands()
        File "/usr/lib/python3/dist-packages/setuptools/_distutils/dist.py", line 967, in run_commands
          self.run_command(cmd)
        File "/usr/lib/python3/dist-packages/setuptools/_distutils/dist.py", line 986, in run_command
          cmd_obj.run()
        File "/usr/lib/python3/dist-packages/setuptools/command/egg_info.py", line 299, in run
          self.find_sources()
        File "/usr/lib/python3/dist-packages/setuptools/command/egg_info.py", line 306, in find_sources
          mm.run()
        File "/usr/lib/python3/dist-packages/setuptools/command/egg_info.py", line 541, in run
          self.add_defaults()
        File "/usr/lib/python3/dist-packages/setuptools/command/egg_info.py", line 578, in add_defaults
          sdist.add_defaults(self)
        File "/usr/lib/python3/dist-packages/setuptools/_distutils/command/sdist.py", line 228, in add_defaults
          self._add_defaults_ext()
        File "/usr/lib/python3/dist-packages/setuptools/_distutils/command/sdist.py", line 312, in _add_defaults_ext
          self.filelist.extend(build_ext.get_source_files())
        File "setup.py", line 201, in get_source_files
          self.cython_sources(ext.sources, ext)
        File "/usr/lib/python3/dist-packages/setuptools/_distutils/cmd.py", line 103, in __getattr__
          raise AttributeError(attr)
      AttributeError: cython_sources
      [end of output]

[FlorianCassayre]

@puradawid Yes.