🐛 FIX empty value for final directive option

[chrisjsewell]

fixes #923

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.13%. Comparing base (c9579c4) to head (b1e243b).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #924   +/-   ##
=======================================
  Coverage   90.13%   90.13%           
=======================================
  Files          24       24           
  Lines        3415     3416    +1     
=======================================
+ Hits         3078     3079    +1     
  Misses        337      337           

Flag	Coverage Δ
pytests	90.13% <100.00%> (+<0.01%)	⬆️

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