ImportError: cannot import name 'display_covered' from 'coverage.results'

TL;DR

Align your coverage and pytest-cov versions: python -m pip install -U pytest-cov coverage. Old pytest-cov imports display_covered from coverage.results, which newer coverage versions removed.

ImportError: cannot import name 'display_covered' from 'coverage.results'

Fix it

1. Check versions. Run python -m pip show pytest-cov coverage.

• Expected: you will see an old pytest-cov (for example 3.x/4.x) next to a new coverage (7.x).

1. Upgrade both together. Run python -m pip install -U pytest-cov coverage.

• Expected: Successfully installed pytest-cov-6.x coverage-7.x (or current).

1. Re-run. The plugin import should succeed now.

• Expected: pytest --cov starts without the ImportError.

When this applies

• The traceback points at pytest_cov/plugin.py line doing from coverage.results import display_covered.
• You pinned one of the two packages and let the other float.

When it does not apply

• If the error is about coverage.report.Reporter, that is a different removed name.
• If pytest-cov is not installed at all, install it first.

Tool compatibility

pytest-cov 5+ with coverage 7.x. Python 3.8+.

Why it happens

pytest-cov reaches into coverage's internals. When coverage refactors those internals (removing display_covered), old pytest-cov releases break. Upgrading pytest-cov gets the fixed import.

Edge cases

• If you must pin coverage (for example coverage==6.5.0), pin a contemporary pytest-cov instead (4.x era).