Add --tb-hide-internal option to hide pytest/pluggy frames with --full-trace

changelog/9509.feature.rst

@@ -0,0 +1 @@
+Added :option:`--tb-hide-internal` option to hide pytest/pluggy internal frames even when :option:`--full-trace` is used.

doc/en/how-to/output.rst

@@ -38,6 +38,10 @@ with Ctrl+C to find out where the tests are *hanging*. By default no output
 will be shown (because KeyboardInterrupt is caught by pytest). By using this
 option you make sure a trace is shown.
 
+The :option:`--tb-hide-internal` option can be used together with
+:option:`--full-trace` to hide pytest/pluggy internal frames from the traceback,
+showing the full user-written traceback without pytest's internal call stack.
+
 
 Verbosity
 --------------------------------------------------

doc/en/reference/reference.rst

@@ -3005,6 +3005,12 @@ Debugging
 
     See :ref:`how-to-modifying-python-tb-printing` for more information.
 
+.. option:: --tb-hide-internal
+
+    Hide pytest/pluggy internal frames even with :option:`--full-trace`.
+
+    See :ref:`how-to-modifying-python-tb-printing` for more information.
+
 .. option:: --debug, --debug=DEBUG_FILE_NAME
 
     Store internal tracing debug information in this log file.
@@ -3472,6 +3478,8 @@ All the command-line flags can also be obtained by running ``pytest --help``::
                             Controls how captured stdout/stderr/log is shown on
                             failed tests. Default: all.
       --full-trace          Don't cut any tracebacks (default is to cut)
+      --tb-hide-internal    Hide pytest/pluggy internal frames even with --full-
+                            trace
       --color=color         Color terminal output (yes/no/auto)
       --code-highlight={yes,no}
                             Whether code should be highlighted (only if --color

src/_pytest/nodes.py

@@ -24,6 +24,7 @@
 import _pytest._code
 from _pytest._code import getfslineno
 from _pytest._code.code import ExceptionInfo
+from _pytest._code.code import filter_traceback
 from _pytest._code.code import TerminalRepr
 from _pytest._code.code import Traceback
 from _pytest._code.code import TracebackStyle
@@ -415,7 +416,13 @@ def _repr_failure_py(
         tbfilter: bool | Callable[[ExceptionInfo[BaseException]], Traceback]
         if self.config.getoption("fulltrace", False):
             style = "long"
-            tbfilter = False
+            if self.config.getoption("tb_hide_internal", False):
+
+                def tbfilter(excinfo: ExceptionInfo[BaseException]) -> Traceback:
+                    return excinfo.traceback.filter(filter_traceback)
+
+            else:
+                tbfilter = False
         else:
             tbfilter = self._traceback_filter
             if style == "auto":

src/_pytest/terminal.py

@@ -254,6 +254,12 @@ def pytest_addoption(parser: Parser) -> None:
         default=False,
         help="Don't cut any tracebacks (default is to cut)",
     )
+    group.addoption(
+        "--tb-hide-internal",
+        action="store_true",
+        default=False,
+        help="Hide pytest/pluggy internal frames even with --full-trace",
+    )
     group.addoption(
         "--color",
         metavar="color",

testing/test_terminal.py

@@ -315,6 +315,39 @@ def test_interrupt_me():
             )
         result.stdout.fnmatch_lines(["*KeyboardInterrupt*"])
 
+    @pytest.mark.parametrize(
+        ("extra_args", "expect_internal"),
+        [
+            (("--fulltrace",), True),
+            (("--fulltrace", "--tb-hide-internal"), False),
+        ],
+    )
+    def test_fulltrace_hide_internal(
+        self,
+        pytester: Pytester,
+        extra_args: tuple[str, ...],
+        expect_internal: bool,
+    ) -> None:
+        pytester.makepyfile(
+            """
+            def helper():
+                assert False
+
+            def test_fail():
+                helper()
+        """
+        )
+        result = pytester.runpytest(*extra_args)
+        assert result.ret == 1
+        if expect_internal:
+            result.stdout.fnmatch_lines(["*/pluggy/*.py*"])
+            result.stdout.fnmatch_lines(["*/_pytest/runner.py*"])
+        else:
+            result.stdout.no_fnmatch_line("*/pluggy/*.py*")
+            result.stdout.no_fnmatch_line("*/_pytest/runner.py*")
+        # Ensure the user frames are still shown.
+        result.stdout.fnmatch_lines([">       helper()", ">       assert False"])
+
     def test_keyboard_in_sessionstart(self, pytester: Pytester) -> None:
         pytester.makeconftest(
             """