Fix variable getting code for strings

[Michael-T-McCann]

No description provided.

[codecov]

Codecov Report

Merging #303 (875c05e) into main (4f995ce) will decrease coverage by 0.08%.
The diff coverage is 20.00%.

@@            Coverage Diff             @@
##             main     #303      +/-   ##
==========================================
- Coverage   94.13%   94.04%   -0.09%     
==========================================
  Files          54       54              
  Lines        3340     3344       +4     
==========================================
+ Hits         3144     3145       +1     
- Misses        196      199       +3     

Flag	Coverage Δ
unittests	94.04% <20.00%> (-0.09%)	⬇️

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Impacted Files	Coverage Δ
scico/_version.py	71.42% <20.00%> (-10.93%)	⬇️

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