use __name__ attribute in the parametrize id for modules as well

AUTHORS

@@ -103,6 +103,7 @@ George Kussumoto
 Georgy Dyuldin
 Graham Horler
 Greg Price
+Gregory Lee
 Grig Gheorghiu
 Grigorii Eremeev (budulianin)
 Guido Wesdorp

src/_pytest/python.py

@@ -1162,7 +1162,8 @@ def _idval(val, argname, idx, idfn, item, config):
         return ascii_escaped(val.pattern)
     elif isinstance(val, enum.Enum):
         return str(val)
-    elif (inspect.isclass(val) or inspect.isfunction(val)) and hasattr(val, "__name__"):
+    elif hasattr(val, "__name__") and isinstance(val.__name__, str):
+        # name of a class, function, module, etc.
         return val.__name__
     return str(argname) + str(idx)
 

testing/test_mark.py

@@ -314,6 +314,21 @@ def test_func(arg):
     assert list(passed) == list(passed_result)
 
 
+def test_parametrize_with_module(testdir):
+    testdir.makepyfile(
+        """
+        import pytest
+        @pytest.mark.parametrize("arg", [pytest,])
+        def test_func(arg):
+            pass
+    """
+    )
+    rec = testdir.inline_run()
+    passed, skipped, fail = rec.listoutcomes()
+    expected_id = "test_func[" + pytest.__name__ + "]"
+    assert passed[0].nodeid.split("::")[-1] == expected_id
+
+
 @pytest.mark.parametrize(
     "spec",
     [