diff --git a/wx/lib/docview.py b/wx/lib/docview.py
index 6d3e8d28..64446b2f 100644
--- a/wx/lib/docview.py
+++ b/wx/lib/docview.py
@@ -1023,7 +1023,7 @@ class DocTemplate(wx.Object):
 
 
     def __init__(self, manager, description, filter, dir, ext, docTypeName, viewTypeName, docType, viewType, flags=DEFAULT_TEMPLATE_FLAGS, icon=None):
-        """
+        r"""
         Constructor. Create instances dynamically near the start of your
         application after creating a wxDocManager instance, and before doing
         any document or view operations.
diff --git a/wx/lib/layoutf.py b/wx/lib/layoutf.py
index 5cfaf0c3..56d294ed 100644
--- a/wx/lib/layoutf.py
+++ b/wx/lib/layoutf.py
@@ -132,8 +132,8 @@ class Layoutf(wx.LayoutConstraints):
              'r': 'wx.Right', 'h': 'wx.Height', 'w': 'wx.Width',
              'x': 'wx.CentreX', 'y': 'wx.CentreY' }
 
-    rexp1 = re.compile('^\s*([tlrbhwxy])\s*([!\?\*])\s*(\d*)\s*$')
-    rexp2 = re.compile('^\s*([tlrbhwxy])\s*([=%<>^_])\s*([tlrbhwxy]?)\s*(\d*)\s*#(\d+)\s*$')
+    rexp1 = re.compile(r'^\s*([tlrbhwxy])\s*([!\?\*])\s*(\d*)\s*$')
+    rexp2 = re.compile(r'^\s*([tlrbhwxy])\s*([=%<>^_])\s*([tlrbhwxy]?)\s*(\d*)\s*#(\d+)\s*$')
 
     def __init__(self,pstr=None,winlist=None):
         wx.LayoutConstraints.__init__(self)
diff --git a/wx/lib/wxpTag.py b/wx/lib/wxpTag.py
index baf7240d..1fb2db9a 100644
--- a/wx/lib/wxpTag.py
+++ b/wx/lib/wxpTag.py
@@ -14,7 +14,7 @@
 # o Updated for V2.5 compatibility
 #
 
-'''
+r'''
 wx.lib.wxpTag
 
 This module contains a wxHtmlTagHandler that knows how to build
diff --git a/wx/tools/pywxrc.py b/wx/tools/pywxrc.py
index 37818e40..8596940d 100644
--- a/wx/tools/pywxrc.py
+++ b/wx/tools/pywxrc.py
@@ -521,7 +521,7 @@ class XmlResourceCompiler:
         # Generate subclasses
         for subclass in subclasses:
             windowClass = bases[subclass]
-            subclass = re.sub("^\S+\.", "", subclass)
+            subclass = re.sub(r"^\S+\.", "", subclass)
             windowClass = re.sub("^wx", "", windowClass)
             outputList.append(self.templates.SUBCLASS_HEADER % locals())
             outputList.append('\n')
@@ -760,7 +760,7 @@ class XmlResourceCompiler:
     #-------------------------------------------------------------------
 
     def ConvertText(self, st):
-        """
+        r"""
         Encode special characters as escaped C/Python string characters.
 
             \n => \\n