[TE-4094] Add 'language_version' attribute to env var

[gchan]

To collect Python language version usage and help us to better
plan deprecation support of end-of-life Python versions.

[pda]

ChatGPT suggests this…

>>> import platform
>>> platform.python_version()
'3.13.2'

[gchan]

Claude is saying the current implementation is better?

 Both sys.version_info and platform.python_version() are compatible with Python 3.9 and newer (and
  much older versions too). Here's the comparison:

  sys.version_info:
  - Returns a sys.version_info named tuple with attributes: major, minor, micro, releaselevel, serial
  - Direct access to version components
  - More efficient (no function call overhead)
  - Available since Python 2.0

  platform.python_version():
  - Returns a string in "major.minor.patchlevel" format
  - Requires importing platform module
  - Already formatted as a string
  - Available since Python 2.3

  Recommendation: Keep sys.version_info

  For your use case, sys.version_info is better because:

  1. More efficient - No function call or additional import needed
  2. More flexible - You can access individual components if needed later
  3. Lighter weight - sys is always imported, platform adds overhead
  4. More explicit - Shows exactly which version components you're using

  Your current implementation is optimal:
  f"{sys.version_info.major}.{sys.version_info.minor}.{sys.version_info.micro}"

  If you wanted to use platform.python_version(), you'd need:
  import platform
  # ...
  "language_version": platform.python_version()

[pda]

My money is on platform.python_version() 😁

[gchan]

I agree with ChatGPT and have updated the code to use 'system'. I've left the test as is to use platform so I'm not repeating the same expression in the test.

[gchan]

The linter started to complain about a missing docstring for a new method recently added so I've added another commit to address that.

I have the incorrect branch name but I'm going to continue to roll with that and deal with Linear admin.