fix: a bug reusing the python markers from the existing lock when appending result

[frostming]

Signed-off-by: Frost Ming [email protected]

Pull Request Checklist

• A news fragment is added in news/ describing what is new.
• Test cases added for changed code.

Describe what you have changed in this PR.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.67%. Comparing base (6950dba) to head (a6079ec).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3089      +/-   ##
==========================================
+ Coverage   85.64%   85.67%   +0.02%     
==========================================
  Files         109      109              
  Lines       10957    10958       +1     
  Branches     2393     2393              
==========================================
+ Hits         9384     9388       +4     
+ Misses       1086     1083       -3     
  Partials      487      487              

Flag	Coverage Δ
unittests	85.47% <100.00%> (+0.02%)	⬆️

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