Replace multiple == checks with in

[deepsource-autofix]

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[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[codecov]

Codecov Report

Merging #167 (eb830b9) into main (b25f57c) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #167   +/-   ##
=======================================
  Coverage   96.79%   96.79%           
=======================================
  Files          67       67           
  Lines        1965     1965           
=======================================
  Hits         1902     1902           
  Misses         63       63           

Flag	Coverage Δ
unittests	96.79% <100.00%> (ø)

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

Impacted Files	Coverage Δ
gradsflow/models/tracker.py	98.70% <100.00%> (ø)

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