SonarCloud and its related tools, SonarLint and SonarQube, detect bugs and code quality issues in Python projects that popular linters like Flake8 may miss. These tools use control flow graphs to analyze code and identify problems such as reference to undefined variables, unreachable code, wrong fields in formatted strings, type errors, and more. They also provide features like type inference, analysis of function calls with no side effects, and detection of unraised exceptions. The tools are designed to be fast and minimize false positives, making them a valuable addition to developer workflows.