Add more explicit channel attributes

[jenshnielsen]

Add methods to ChannelTuple/List that ensures we always get a multi_parameter/callable and change the value returned by __getattr__ to None.

• Changelog
• Tests

Copy of #7641 to allow copilot to contribute

[Copilot]

@jenshnielsen I've opened a new pull request, #7687, to work on those changes. Once the pull request is ready, I'll request review from you.

[jenshnielsen]

@copilot could you add a changelog fragment as described in the pull request template. Please add one for the changes to the channeltuple class and one for each of the two drivers that changed

[Copilot]

@jenshnielsen I've opened a new pull request, #7688, to work on those changes. Once the pull request is ready, I'll request review from you.

[codecov]

Codecov Report

❌ Patch coverage is 64.51613% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 59.79%. Comparing base (b41acfa) to head (aa76800).
⚠️ Report is 33 commits behind head on main.

Files with missing lines	Patch %	Lines
src/qcodes/instrument/channel.py	82.60%	4 Missing ⚠️
src/qcodes/instrument_drivers/rohde_schwarz/ZNB.py	0.00%	3 Missing ⚠️
...ment_drivers/Minicircuits/_minicircuits_rc_spdt.py	0.00%	2 Missing ⚠️
src/qcodes/instrument_drivers/tektronix/TPS2012.py	33.33%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7686      +/-   ##
==========================================
+ Coverage   59.78%   59.79%   +0.01%     
==========================================
  Files         352      352              
  Lines       31659    31683      +24     
==========================================
+ Hits        18927    18946      +19     
- Misses      12732    12737       +5     

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[Copilot]

Pull request overview

This PR enhances type safety for channel-based instrument drivers by adding explicit type annotations to channel submodules and introducing new type-safe methods for accessing parameters and functions across multiple channels.

Key Changes:

• Added multi_parameter and multi_function methods to ChannelTuple for explicit, type-safe access to multi-channel operations
• Updated TektronixTPS2012, RohdeSchwarzZNBBase, and MiniCircuitsRCSPDT drivers with explicit type annotations on their channels attributes
• Enhanced the __getattr__ method documentation to guide users toward the new type-safe methods

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
src/qcodes/instrument/channel.py	Added multi_parameter and multi_function methods to ChannelTuple class, providing explicit type-safe alternatives to __getattr__ for accessing parameters and functions on all channels
tests/test_channels.py	Added comprehensive tests for the new multi_parameter and multi_function methods, including edge cases for invalid names and empty channel tuples
src/qcodes/instrument_drivers/tektronix/TPS2012.py	Added type annotation and docstring to channels attribute using ChannelTuple[TektronixTPS2012Channel]
src/qcodes/instrument_drivers/rohde_schwarz/ZNB.py	Added type annotation and docstring to channels attribute using ChannelList[RohdeSchwarzZNBChannel], and updated autoscale call to use new multi_function method
src/qcodes/instrument_drivers/Minicircuits/_minicircuits_rc_spdt.py	Added type annotation and docstring to channels attribute using ChannelTuple[MiniCircuitsRCSPDTChannel]
docs/changes/newsfragments/7686.improved	Newsfragment documenting the addition of multi_parameter and multi_function methods
docs/changes/newsfragments/7686.improved_driver	Newsfragment documenting the driver type annotation improvements