python-coverage.el

This is an experimental Emacs package to report code coverage output produced by Python's coverage package directly inside Emacs buffers.

Best used together with python-pytest.el.

Screenshot

Overlays

Minor mode for automagically updated overlays:

• python-coverage-overlay-mode

Alternatively, commands for manually updated overlays:

• python-coverage-overlay-refresh
• python-coverage-overlay-remove-all

Navigation commands:

• python-coverage-overlay-jump-next
• python-coverage-overlay-jump-previous
• python-coverage-overlay-jump-first

Flycheck checker

Run flycheck-select-checker, pick python-coverage.

Coverage data

This package reads the XML output produced by Python's coverage package. Usually this file is named coverage.xml.

With plain coverage:

$ coverage xml

With pytest-cov, pass --cov-report=xml, e.g. via pyproject.toml:

[tool.pytest.ini_options]
addopts = [
  "--cov=your-package",
  "--cov=test",
  "--cov-report=xml",
]

Customization

Command for manual coverage file selection:

• python-coverage-select-coverage-file

Customizable settings (see their description for details) in the python-coverage group, e.g. via M-x customize-group:

• python-coverage-default-file-name
• python-coverage-overlay-width

Styling via custom faces, e.g. via M-x customize-face:

• python-coverage-overlay-missing
• python-coverage-overlay-partial
• python-coverage-overlay-missing-outdated
• python-coverage-overlay-partial-outdated

Note: by default this package inherits from magit-diff-* faces, which should work in most themes. This requires magit to be installed, but it's not otherwise used.

Credits

This package was created by wouter bolsterlee (@wbolster).

License

BSD; see LICENSE.rst.