Major fixes and new features

venv/lib/python3.12/site-packages/pytest_cov/compat.py

@@ -0,0 +1,24 @@
+try:
+    from StringIO import StringIO
+except ImportError:
+    from io import StringIO
+
+
+StringIO  # pyflakes, this is for re-export
+
+
+class SessionWrapper:
+    def __init__(self, session):
+        self._session = session
+        if hasattr(session, 'testsfailed'):
+            self._attr = 'testsfailed'
+        else:
+            self._attr = '_testsfailed'
+
+    @property
+    def testsfailed(self):
+        return getattr(self._session, self._attr)
+
+    @testsfailed.setter
+    def testsfailed(self, value):
+        setattr(self._session, self._attr, value)