fix for empty dataclass

[willmcgugan]

Fixes #2819

[codecov-commenter]

Codecov Report

Base: 98.50% // Head: 98.51% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (da4f6bc) compared to base (88cf996).
Patch coverage: 100.00% of modified lines in pull request are covered.

📣 This organization is not using Codecov’s GitHub App Integration. We recommend you install it so Codecov can continue to function properly for your repositories. Learn more

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2820   +/-   ##
=======================================
  Coverage   98.50%   98.51%           
=======================================
  Files          74       74           
  Lines        7917     7920    +3     
=======================================
+ Hits         7799     7802    +3     
  Misses        118      118           

Flag	Coverage Δ
unittests	98.51% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
rich/pretty.py	98.98% <ø> (ø)
rich/progress.py	92.92% <ø> (ø)
rich/color.py	100.00% <100.00%> (ø)
rich/theme.py	100.00% <100.00%> (ø)

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.