*: fix warnings with regex

product/ERP5Form/Tool/SelectionTool.py

@@ -684,7 +684,7 @@ class SelectionTool( BaseTool, SimpleItem ):
         # qdsqdsq/Base_view/qsdsqd --> matches
         # qdsqdsq/Base_viewAaa --> doesn't match
         # qdsqdsq/Umpa_view --> doesn't match
-        if re.search('/%s($|\W+)' % form_id, url):
+        if re.search(r'/%s($|\W+)' % form_id, url):
           return form_id
       return 'view'
 

product/ERP5Type/Base.py

@@ -128,7 +128,7 @@ class PersistentContainer(Persistent):
         self.value = state
 
 global registered_workflow_method_set
-wildcard_interaction_method_id_match = re.compile(r'[[.?*+{(\\]').search
+wildcard_interaction_method_id_match = re.compile(r'[\[.?*+{(\\]').search
 workflow_method_registry = [] # XXX A set() would be better but would require a hash in WorkflowMethod class
 
 def resetRegisteredWorkflowMethod(portal_type=None):

product/ERP5Type/Utils.py

@@ -770,7 +770,7 @@ from .Accessor.Base import func_code
 from Products.CMFCore.utils import manage_addContentForm, manage_addContent
 from AccessControl.PermissionRole import PermissionRole
 
-python_file_parser = re.compile('^(.*)\.py$')
+python_file_parser = re.compile(r'^(.*)\.py$')
 
 def getLocalPropertySheetList():
   if not getConfiguration:
@@ -1748,12 +1748,12 @@ from six.moves.urllib.parse import urlsplit, urlunsplit, urljoin
 
 # Regular expressions
 re_cleanup_anchors = re.compile('#.*')
-re_extract_port = re.compile(':(\d+)$')
+re_extract_port = re.compile(r':(\d+)$')
 def uppercaseLetter(matchobject):
   return matchobject.group(0).upper()
-re_cleanup_escaped_url = re.compile('%\w\d')
+re_cleanup_escaped_url = re.compile(r'%\w\d')
 re_cleanup_slashes = re.compile('/{2,}')
-re_cleanup_tail = re.compile('\??$')
+re_cleanup_tail = re.compile(r'\??$')
 
 def legacyNormalizeUrl(url, base_url=None):
   """this method does normalisation itself.

product/Formulator/Validator.py

@@ -184,7 +184,7 @@ class EmailValidator(StringValidator):
     # brackets around the address (we assume these would be added by
     # some custom script if needed), and of course no characters that
     # don't belong in an e-mail address.
-    pattern = re.compile('^[0-9a-zA-Z_\'&.%+-]+@([0-9a-zA-Z]([0-9a-zA-Z-]*[0-9a-zA-Z])?\.)+[a-zA-Z]{2,}$')
+    pattern = re.compile(r'^[0-9a-zA-Z_\'&.%+-]+@([0-9a-zA-Z]([0-9a-zA-Z-]*[0-9a-zA-Z])?\.)+[a-zA-Z]{2,}$')
 
     def validate(self, field, key, REQUEST):
         value = StringValidator.validate(self, field, key, REQUEST)