fix: add default value in deprecated argument

[Swalloow]

Added a default value of None to the trace_or_observation for optional usage.
It prevents potential confusion for users by clearly indicating the optional and deprecated parameter.

---

Important

Added default value None to trace_or_observation parameter in link() function in client.py to indicate it is optional and deprecated.

• Function Signature:
  • In link() function in client.py, added default value None to trace_or_observation parameter.
  • This change clarifies that trace_or_observation is optional and deprecated.

^{This description was created by for 391d284. It will automatically update as commits are pushed.}

[CLAassistant]

All committers have signed the CLA.

[greptile-apps]

Disclaimer: Experimental PR review

PR Summary

Improved parameter handling in the DatasetItemClient's link method by adding default value for deprecated parameter.

• Modified langfuse/client.py to set default value of None for deprecated trace_or_observation parameter
• Reordered parameter position in link method signature to place deprecated parameter last
• Updated docstring to reflect parameter changes and deprecation status

_{💡 (1/5) You can manually trigger the bot by mentioning @greptileai in a comment!}

_{1 file(s) reviewed, no comment(s)
Edit PR Review Bot Settings | Greptile}

[marcklingen]

Unfortunately, this was a positional argument in the original api here and later on the keyword arguments were added. @hassiebp can you review?

To me it seems like this requires a major bump as it is a breaking change. If yes, I’d suggest to add this in the next major version as this is clearly tech debt in this interface.