fix_future_warning

[pascalgutjahr]

No description provided.

[mhuen]

Can you make sure to run the pre-commit hooks and adjust the formatting?

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Please upload report for BASE (master@9b72f67). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
dnn_reco/data_handler.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##             master     #10   +/-   ##
========================================
  Coverage          ?   4.61%           
========================================
  Files             ?      32           
  Lines             ?    2927           
  Branches          ?     508           
========================================
  Hits              ?     135           
  Misses            ?    2792           
  Partials          ?       0           

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