fix missing f string issue #163

[voglster]

Fixes #163

[codecov]

Codecov Report

Merging #222 (b555b12) into master (405c2c6) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #222   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           38        38           
  Lines         2725      2725           
  Branches       413       413           
=========================================
  Hits          2725      2725           

Flag	Coverage Δ
tests-3.6-4-standalone	99.70% <ø> (ø)
tests-3.6-4.2-standalone	99.70% <ø> (ø)
tests-3.6-4.4-standalone	99.70% <ø> (ø)
tests-3.7-4-standalone	99.51% <ø> (ø)
tests-3.7-4.2-standalone	99.51% <ø> (ø)
tests-3.7-4.4-standalone	99.51% <ø> (ø)
tests-3.8-4-replicaSet	97.94% <ø> (ø)
tests-3.8-4-standalone	99.44% <ø> (ø)
tests-3.8-4.2-sharded	97.94% <ø> (ø)
tests-3.8-4.2-standalone	99.44% <ø> (ø)
tests-3.8-4.4-standalone	99.44% <ø> (ø)
tests-3.9-4-standalone	99.30% <ø> (ø)
tests-3.9-4.2-standalone	99.30% <ø> (ø)
tests-3.9-4.4-standalone	99.30% <ø> (ø)

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Impacted Files	Coverage Δ
odmantic/model.py	100.00% <ø> (ø)

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[art049]

Thanks a lot !