Fix the base extract_subset

[jkanche]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 57.14286% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.16%. Comparing base (c337061) to head (dcfd76f).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/compressed_lists/base.py	57.14%	3 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #12      +/-   ##
==========================================
- Coverage   83.30%   83.16%   -0.15%     
==========================================
  Files          10       10              
  Lines         575      582       +7     
  Branches       70       72       +2     
==========================================
+ Hits          479      484       +5     
- Misses         67       68       +1     
- Partials       29       30       +1     

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