What are the main stages that can be included in the continuous integration (CI) cycle?

The main stages of the continuous integration (CI) cycle typically include:

1. Build — compiling source code and preparing artifacts.
2. Testing — running automated tests (unit tests, integration tests, etc.) to verify correctness.
3. Code quality analysis — static analysis, style checks, test coverage.
4. Deploy — automatically publishing the build to a test environment or staging.
5. Notifications — informing the team about the results of build and testing.

An example of a simple CI script in Python using pytest:

# Build (if needed)
python setup.py build

# Run tests
pytest tests/

# If tests pass successfully, you can proceed with deployment

Thus, CI helps quickly identify errors and maintain code quality.