Python 3.5 test failures on master

[digitalresistor]

======================================================================
FAIL: test_commit_conflict_with_two_includes (pyramid.tests.test_config.test_init.ConfiguratorTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/xistence/Projects/pyramid/pyramid/tests/test_config/test_init.py", line 1112, in test_commit_conflict_with_two_includes
    config.commit()
pyramid.exceptions.ConfigurationConflictError: Conflicting configuration actions
  For: ('view', None, '', None, 'd41d8cd98f00b204e9800998ecf8427e')
    Line 526 of file /Users/xistence/Projects/pyramid/pyramid/util.py:
        return wrapped(self, *arg, **defaults)
    Line 526 of file /Users/xistence/Projects/pyramid/pyramid/util.py:
        return wrapped(self, *arg, **defaults)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/xistence/Projects/pyramid/pyramid/tests/test_config/test_init.py", line 1116, in test_commit_conflict_with_two_includes
    self.assertEqual(c1, 'includeme1')
AssertionError: 'wrapper' != 'includeme1'
- wrapper
+ includeme1


======================================================================
FAIL: test_conflict_set_forbidden_view (pyramid.tests.test_config.test_init.ConfiguratorTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/xistence/Projects/pyramid/pyramid/tests/test_config/test_init.py", line 1172, in test_conflict_set_forbidden_view
    config.commit()
pyramid.exceptions.ConfigurationConflictError: Conflicting configuration actions
  For: ('view', <class 'pyramid.httpexceptions.HTTPForbidden'>, '', None, 'd41d8cd98f00b204e9800998ecf8427e')
    Line 526 of file /Users/xistence/Projects/pyramid/pyramid/util.py:
        return wrapped(self, *arg, **defaults)
    Line 526 of file /Users/xistence/Projects/pyramid/pyramid/util.py:
        return wrapped(self, *arg, **defaults)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/xistence/Projects/pyramid/pyramid/tests/test_config/test_init.py", line 1175, in test_conflict_set_forbidden_view
    self.assertEqual(c1, 'test_conflict_set_forbidden_view')
AssertionError: 'wrapper' != 'test_conflict_set_forbidden_view'
- wrapper
+ test_conflict_set_forbidden_view


======================================================================
FAIL: test_conflict_set_notfound_view (pyramid.tests.test_config.test_init.ConfiguratorTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/xistence/Projects/pyramid/pyramid/tests/test_config/test_init.py", line 1157, in test_conflict_set_notfound_view
    config.commit()
pyramid.exceptions.ConfigurationConflictError: Conflicting configuration actions
  For: ('view', <class 'pyramid.httpexceptions.HTTPNotFound'>, '', None, 'd41d8cd98f00b204e9800998ecf8427e')
    Line 526 of file /Users/xistence/Projects/pyramid/pyramid/util.py:
        return wrapped(self, *arg, **defaults)
    Line 526 of file /Users/xistence/Projects/pyramid/pyramid/util.py:
        return wrapped(self, *arg, **defaults)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/xistence/Projects/pyramid/pyramid/tests/test_config/test_init.py", line 1160, in test_conflict_set_notfound_view
    self.assertEqual(c1, 'test_conflict_set_notfound_view')
AssertionError: 'wrapper' != 'test_conflict_set_notfound_view'
- wrapper
+ test_conflict_set_notfound_view


----------------------------------------------------------------------
Ran 2467 tests in 6.874s

FAILED (failures=3)

This will fix Python 3.5, but break all other Python versions:

diff --git a/pyramid/util.py b/pyramid/util.py
index 1ae7e6a..828f0d8 100644
--- a/pyramid/util.py
+++ b/pyramid/util.py
@@ -548,13 +548,13 @@ def action_method(wrapped):
             self._ainfo = []
         info = kw.pop('_info', None)
         # backframes for outer decorators to actionmethods
-        backframes = kw.pop('_backframes', 0) + 2
+        backframes = kw.pop('_backframes', 0) + 3
         if is_nonstr_iter(info) and len(info) == 4:
             # _info permitted as extract_stack tuple
             info = ActionInfo(*info)
         if info is None:
             try:
-                f = traceback.extract_stack(limit=3)
+                f = traceback.extract_stack(limit=4)
                 info = ActionInfo(*f[-backframes])
             except: # pragma: no cover
                 info = ActionInfo(None, 0, '', '')

[digitalresistor]

Doing some "print()" style debugging:

pyramid/tests/test_config/test_init.py 1108 includeme2 config.add_view(view2)
pyramid/util.py 526 wrapper return wrapped(self, *arg, **defaults)
pyramid/util.py 557 wrapper f = traceback.extract_stack(limit=4)
/Users/xistence/.pyenv/versions/3.5.0/lib/python3.5/traceback.py 201 extract_stack stack = StackSummary.extract(walk_stack(f), limit=limit)

Is the stack on Python 3.5

pyramid/config/__init__.py 798 include c(configurator)
pyramid/tests/test_config/test_init.py 1108 includeme2 config.add_view(view2)
pyramid/util.py 526 wrapper return wrapped(self, *arg, **defaults)
pyramid/util.py 557 wrapper f = traceback.extract_stack(limit=4)

Is the stack on Python 3.4

[mmerickel]

dup of #1899 afaict, but I'll leave it open since you're working on it

[digitalresistor]

Kind of a dup, there are more test errors on 1.5.7 than there are on HEAD on master, hence why I didn't add stuff to that issue.

[digitalresistor]

Python 3.5's whats new does list traceback changes: https://docs.python.org/3/whatsnew/3.5.html#whatsnew-traceback

[digitalresistor]

Created an issue on the Python bug tracker: http://bugs.python.org/issue25379

[digitalresistor]

@sontek dug this up, which shows the issue will be fixed in a point release: https://bugs.python.org/issue25108