API:

- [https://docs.pytest.org/en/stable/reference/reference.html#pytest.Item.add_report_section](https://docs.pytest.org/en/stable/reference/reference.html#pytest.Item.add_report_section)
- [https://docs.pytest.org/en/stable/reference/reference.html#pytest.hookspec.pytest_terminal_summary](https://docs.pytest.org/en/stable/reference/reference.html#pytest.hookspec.pytest_terminal_summary)
- [https://docs.pytest.org/en/latest/reference/reference.html#pytest.hookspec.pytest_report_teststatus](https://docs.pytest.org/en/latest/reference/reference.html#pytest.hookspec.pytest_report_teststatus)

Hooks:

- [https://docs.pytest.org/en/stable/how-to/writing_hook_functions.html#](https://docs.pytest.org/en/stable/how-to/writing_hook_functions.html#)
- [https://stackoverflow.com/questions/56865065/how-to-add-custom-sections-to-terminal-report-in-pytest](https://stackoverflow.com/questions/56865065/how-to-add-custom-sections-to-terminal-report-in-pytest)

Terminal reporter:

- [https://github.com/pytest-dev/pytest/issues/939](https://github.com/pytest-dev/pytest/issues/939)

Refs:

- [https://paragkamble.medium.com/understanding-hooks-in-pytest-892e91edbdb7](https://paragkamble.medium.com/understanding-hooks-in-pytest-892e91edbdb7)
- [https://pytest-with-eric.com/hooks/pytest-hooks/](https://pytest-with-eric.com/hooks/pytest-hooks/)
- [https://pytest-with-eric.com/pytest-best-practices/pytest-plugins/](https://pytest-with-eric.com/pytest-best-practices/pytest-plugins/)

```python
import warnings
from collections import defaultdict

import pytest
from _pytest.runner import CallInfo
from _pytest.terminal import TerminalReporter


@pytest.hookimpl()
def pytest_sessionstart(session):
    print("Hello from `pytest_sessionstart`")


@pytest.hookimpl()
def pytest_sessionfinish(session, exitstatus):
    print("Hello from `pytest_sessionfinish` hook {exitstatus=}")


@pytest.hookimpl(tryfirst=True)
def pytest_runtest_makereport(item, call: CallInfo):
    # Let's ensure we are dealing with a test report
    if call.when == "call":
        outcome = call.excinfo

        try:
            # Access the test outcome (passed, failed, etc.)
            test_outcome = "failed" if outcome else "passed"
            # Access the test duration
            test_duration = call.duration
            # Access the test ID (nodeid)
            test_id = item.nodeid

            # Print Test Outcome and Duration
            print(f"Test: {test_id}=, {test_outcome=}, {test_duration=:.5f} seconds")
        except Exception as e:
            print("ERROR:", e)


@pytest.hookimpl()
def pytest_warning_recorded(warning_message: warnings.WarningMessage, nodeid: str):
    """
    This hook is called when a warning is recorded during test execution.
    It allows us to capture and process warnings.
    """
    # print(nodeid)
    return None


@pytest.hookimpl(trylast=True)
def pytest_terminal_summary(terminalreporter: TerminalReporter, exitstatus, config):
    terminal_warnings = terminalreporter.stats.get("warnings", [])
    if len(terminal_warnings) == 0:
        return None

    warning_location_to_nodeid = defaultdict(set)

    warning_count_by_nodeid = defaultdict(int)
    for report in terminal_warnings:
        nodeid = report.nodeid
        warning_count_by_nodeid[nodeid] += 1

        warning_location = report.fslocation
        warning_location_to_nodeid[warning_location].add(nodeid)

    # sort the warning_count_by_nodeid by count
    sorted_warnings = sorted(warning_count_by_nodeid.items(), key=lambda x: x[1], reverse=True)
    terminalreporter.write_line("Warnings Summary by nodeid:", bold=True)
    for nodeid, count in sorted_warnings:
        terminalreporter.write_line(f"{nodeid}: {count} warnings", yellow=True)

    sorted_location_warnings = sorted(
        warning_location_to_nodeid.items(), key=lambda x: len(x[1]), reverse=True
    )
    terminalreporter.write_line("Warnings Summary by type:", bold=True)
    for warning_location, nodeids in sorted_location_warnings:
        warning_location_str = "::".join([str(w) for w in warning_location])
        terminalreporter.write_line(f"{warning_location_str}: {len(nodeids)} warnings", yellow=True)
        for nodeid in nodeids:
            terminalreporter.write_line(f"  - {nodeid}")
```

Pytest impl hooks to alter terminal output