style: format code with Black

[deepsource-autofix[bot]]

This commit fixes the style issues introduced in a17f1bc according to the output from Black.

Details: None

[codacy-production[bot]]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
-0.32%	∅

Coverage variation details

| | Coverable lines | Covered lines | Coverage | | ------------- | ------------- | ------------- | ------------- | | Common ancestor commit (a17f1bcd8053276d76e8cf652e6df34904808ad8) | 2249 | 1481 | 65.85% | | | Head commit (dc68947c7224f72247b51821adf197d872c65eba) | 2225 (-24) | 1458 (-23) | 65.53% (**-0.32%**) | **Coverage variation** is the difference between the coverage for the head and common ancestor commits of the pull request branch: ` - `

Diff coverage details

| | Coverable lines | Covered lines | Diff coverage | | ------------- | ------------- | ------------- | ------------- | | Pull request (#122) | 0 | 0 | **∅ (not applicable)** | **Diff coverage** is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: `/ * 100%`

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_{You may notice some variations in coverage metrics with the latest Coverage engine update. For more details, visit the documentation}