### Initialize Development Environment

Source: https://github.com/launchdarkly/python-server-sdk/blob/main/CONTRIBUTING.md

Install project dependencies and activate the virtual environment using uv.

```bash
uv sync
source .venv/bin/activate
```

--------------------------------

### Install Optional Dependencies

Source: https://github.com/launchdarkly/python-server-sdk/blob/main/CONTRIBUTING.md

Install specific extra dependencies or all available extras for the SDK.

```bash
uv sync --extra redis --extra consul --extra dynamodb --extra test-filesource
uv sync --all-extras
```

--------------------------------

### Build Documentation

Source: https://github.com/launchdarkly/python-server-sdk/blob/main/CONTRIBUTING.md

Generate local documentation files to preview changes.

```bash
make docs
```

--------------------------------

### Build and view docs

Source: https://github.com/launchdarkly/python-server-sdk/blob/main/docs/README.md

Commands to build and view the generated documentation locally.

```bash
make html
view docs/build/html/index.html
```

--------------------------------

### Verify SDK Package Provenance

Source: https://github.com/launchdarkly/python-server-sdk/blob/main/PROVENANCE.md

Download the specific SDK wheel from PyPI and verify its provenance against the LaunchDarkly GitHub repository.

```bash
# Download package from PyPI
$ pip download --only-binary=:all: launchdarkly-server-sdk==${SDK_VERSION}

# Verify provenance using the GitHub CLI
$ gh attestation verify launchdarkly_server_sdk-${SDK_VERSION}-py3-none-any.whl --owner launchdarkly
```

--------------------------------

### Expected Verification Output

Source: https://github.com/launchdarkly/python-server-sdk/blob/main/PROVENANCE.md

Sample output showing a successful verification of the artifact attestation.

```text
Loaded digest sha256:... for file://launchdarkly_server_sdk-9.15.0-py3-none-any.whl
Loaded 1 attestation from GitHub API

The following policy criteria will be enforced:
- Predicate type must match:................ https://slsa.dev/provenance/v1
- Source Repository Owner URI must match:... https://github.com/launchdarkly
- Subject Alternative Name must match regex: (?i)^https://github.com/launchdarkly/
- OIDC Issuer must match:................... https://token.actions.githubusercontent.com

✓ Verification succeeded!

The following 1 attestation matched the policy criteria

- Attestation #1
  - Build repo:..... launchdarkly/python-server-sdk
  - Build workflow:. .github/workflows/release-please.yml
  - Signer repo:.... launchdarkly/python-server-sdk
  - Signer workflow: .github/workflows/release-please.yml
```

--------------------------------

### Run Linter

Source: https://github.com/launchdarkly/python-server-sdk/blob/main/CONTRIBUTING.md

Execute mypy to verify type hints and identify potential code issues.

```bash
make lint
```

--------------------------------

### Execute Unit Tests

Source: https://github.com/launchdarkly/python-server-sdk/blob/main/CONTRIBUTING.md

Run unit tests, either excluding or including database integrations.

```bash
make test
```

```bash
make test-all
```

--------------------------------

### Set SDK Version

Source: https://github.com/launchdarkly/python-server-sdk/blob/main/PROVENANCE.md

Define the SDK version variable to be used in subsequent verification commands.

```bash
# Set the version of the SDK to verify
SDK_VERSION=9.16.0
```

--------------------------------

### Define private attribute type hints

Source: https://github.com/launchdarkly/python-server-sdk/blob/main/CONTRIBUTING.md

Use this comment-based syntax for type hinting private attributes to maintain compatibility with older Python versions supported by the SDK.

```python
    self._some_attribute = None  # type: Optional[int]
```

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