Update tests for Python 3.13, add nocover in pshell

Inner functions such as:

    def outer():
        def inner():
            pass

Now have an attribute called `__name__`, which will be set to `inner`.

Also it seems that there is a `__doc__` attribute that is now standard,
and thus we add a pragma nocover to pshell.

src/pyramid/scripts/pshell.py

@@ -193,7 +193,7 @@ def setup_env(self):
                 if k not in orig_env or v is not orig_env[k]:
                     if getattr(v, '__doc__', False):
                         env_help[k] = v.__doc__.replace("\n", " ")
-                    else:
+                    else:  # pragma: nocover -- Python >= 3.13 always has a __doc__
                         env_help[k] = v
             del orig_env
 

tests/test_util.py

@@ -1,5 +1,6 @@
 import sys
 import unittest
+import pytest
 
 from pyramid.util import bytes_, text_
 
@@ -66,13 +67,10 @@ def worker(obj):
         self.assertEqual(1, foo.y)
 
     def test_property_without_name(self):
-        def worker(obj):  # pragma: no cover
-            pass
-
         foo = Dummy()
         helper = self._getTargetClass()
         self.assertRaises(
-            ValueError, helper.set_property, foo, property(worker)
+            ValueError, helper.set_property, foo, "has_no___name__"
         )
 
     def test_property_with_name(self):
@@ -271,11 +269,8 @@ def worker(obj):
         self.assertEqual(1, foo.y)
 
     def test_property_without_name(self):
-        def worker(obj):  # pragma: no cover
-            pass
-
         foo = self._makeOne()
-        self.assertRaises(ValueError, foo.set_property, property(worker))
+        self.assertRaises(ValueError, foo.set_property, "has_no___name__")
 
     def test_property_with_name(self):
         def worker(obj):