pylint: don't report __traceback_info__ as unused variable

this is a "magic" local variable used to add more debugging information
in zope traceback, it's not supposed to be used directly so it was a
false positive in our case.

This extends the default value of --dummy-variable-rgx that was defined
to _$|dummy in pylint 1.4.4 (
https://github.com/PyCQA/pylint/blob/pylint-1.4.4/pylint/checkers/variables.py#L296
)

bt5/erp5_budget/DocumentTemplateItem/portal_components/document.erp5.NodeBudgetVariation.py

@@ -293,7 +293,7 @@ class NodeBudgetVariation(BudgetVariation):
     found = False
     for node_url in category_list:
       if node_url != '%s/budget_special_node/none' % base_category:
-        __traceback_info__ = (node_url, ) # pylint: disable=unused-variable
+        __traceback_info__ = (node_url, )
         if uid_based_axis:
           query_dict.setdefault(axis, []).append(
                 portal_categories.getCategoryValue(node_url,

bt5/erp5_dms/TestTemplateItem/portal_components/test.erp5.testERP5WebWithDms.py

@@ -1320,7 +1320,7 @@ return True
           ("image/png", "", pngmessage, png, XSMALL_PNG_IMAGE_ICON_DATA),
           ("image/png", "png", svgtopngmessage, svg, None),
         ]:
-      __traceback_info__ = (content_type, "?format=" + ext) # pylint: disable=unused-variable
+      __traceback_info__ = (content_type, "?format=" + ext)
       self.assertEqual(
         message.get("Content-Location"),
         obj.absolute_url() + "?format=" + ext,

bt5/erp5_oauth2_authorisation/DocumentTemplateItem/portal_components/document.erp5.OAuth2AuthorisationServerConnector.py

@@ -188,7 +188,7 @@ def substituteRequest(
   request_from_container = request_container.REQUEST
   request_container.REQUEST = inner_request
   try:
-    __traceback_info__ = inner_request # pylint: disable=unused-variable
+    __traceback_info__ = inner_request
     yield inner_request
   finally:
     request_container.REQUEST = request_from_container

bt5/erp5_stripe/DocumentTemplateItem/portal_components/document.erp5.StripeConnector.py

@@ -96,7 +96,7 @@ class StripeConnector(XMLObject):
       auth=((self.getPassword() or "").strip(), ''),
       timeout=self.getTimeout() or TIMEOUT)
     if not response.ok:
-      __traceback_info__ = ( # pylint:disable=unused-variable
+      __traceback_info__ = (
         response.request.url,
         response.request.body,
         response.text
@@ -117,7 +117,7 @@ class StripeConnector(XMLObject):
       auth=((self.getPassword() or "").strip(), ''),
       timeout=self.getTimeout() or TIMEOUT)
     if not response.ok:
-      __traceback_info__ = ( # pylint:disable=unused-variable
+      __traceback_info__ = (
         response.request.url,
         response.request.body,
         response.text

bt5/erp5_syncml/DocumentTemplateItem/portal_components/document.erp5.SyncMLSubscription.py

@@ -484,7 +484,7 @@ class SyncMLSubscription(XMLObject):
         signature.appendPartialData(incoming_data)
         incoming_data = signature.getPartialData()
         signature.setPartialData(None)
-      __traceback_info__ = (gid, document, incoming_data, action['command']) # pylint: disable=unused-variable
+      __traceback_info__ = (gid, document, incoming_data, action['command'])
       # Browse possible actions
       if action["command"] == 'Add':
         status_code = "item_added"  # Default status code for addition

bt5/erp5_test_result/SkinTemplateItem/portal_skins/erp5_test_result/TaskDistributorAlarm_optimize.py

@@ -23,7 +23,7 @@ for test_node in list_node:
       if ping_date <= old_date:
         test_node.invalidate()
   elif validation_state == 'invalidated':
-    __traceback_info__ = test_node # pylint:disable=unused-variable
+    __traceback_info__ = test_node
     if test_node.getSpecialise():
       test_node.getSpecialiseValue().cleanupInvalidatedTestNode(test_node)
 

product/ERP5/bootstrap/erp5_core/ModuleComponentTemplateItem/portal_components/module.erp5.ExplanationCache.py

@@ -323,7 +323,7 @@ class ExplanationCache:
     try:
       result = cache[reference_date_key]
       if result is self: # use self as marker to detect infinite recursion
-        __traceback_info__ = (business_process.getPath(), trade_phase, # pylint: disable=unused-variable
+        __traceback_info__ = (business_process.getPath(), trade_phase,
                               reference_date_method_id, delay_mode)
         raise ValueError('No reference date is defined, probably due to missing Trade Model Path in Business Process')
       return result

product/ERP5Type/Utils.py

@@ -514,6 +514,9 @@ def checkPythonSourceCode(source_code_str, portal_type=None):
            # The default considers only six.moves, let's consider six module
            # completely to avoid `Redefining built-in 'basestring'` for example
            '--redefining-builtins-modules=six,six.moves,past.builtins,future.builtins,builtins,io',
+           # Don't report __traceback_info__ and __traceback_supplement__ as
+           # unused variables
+           '--dummy-variables-rgx=_$|dummy|__traceback_info__|__traceback_supplement__',
       ]
 
       if portal_type == 'Interface Component':