style: format code with Black

[deepsource-autofix[bot]]

This commit fixes the style issues introduced in d6f6e76 according to the output from Black.

Details: None

[codacy-production[bot]]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
:white_check_mark: +0.00%	:white_check_mark: 100.00%

Coverage variation details

| | Coverable lines | Covered lines | Coverage | | ------------- | ------------- | ------------- | ------------- | | Common ancestor commit (d6f6e766e79054f59dc267ac9f3ab815a58e1850) | 2252 | 1488 | 66.07% | | | Head commit (20e1d1f3fbd4062a695d7f2f68a31a1fabec4940) | 2252 (+0) | 1488 (+0) | 66.07% (**+0.00%**) | **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 (#123) | 1 | 1 | **100.00%** | **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}