style: format code with Black

[deepsource-autofix[bot]]

This commit fixes the style issues introduced in 555489f according to the output from Black.

Details: None

[codacy-production[bot]]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
+0.33%	0.00%

Coverage variation details

| | Coverable lines | Covered lines | Coverage | | ------------- | ------------- | ------------- | ------------- | | Common ancestor commit (555489f1022e9263fea751f2f60a8c73b42676b3) | 2225 | 1440 | 64.72% | | | Head commit (9b07ada735d588fe2600e4662ebed008c299855f) | 2249 (+24) | 1463 (+23) | 65.05% (**+0.33%**) | **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 (#120) | 1 | 0 | **0.00%** | **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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