use raw python strings to eliminate python warnings (#366)

Author: bashbaug

scripts/generate_controls_doc.py

@@ -10,7 +10,7 @@
 
 # File Header:
 def GetHeader():
-    return """# How to Use the Intercept Layer for OpenCL Applications
+    return r"""# How to Use the Intercept Layer for OpenCL Applications
 
 This file is automatically generated using the script `generate_controls_doc.py`.
 Please do not edit it manually!
@@ -145,7 +145,7 @@ def GetHeader():
 
 # File Footer:
 def GetFooter():
-    return """
+    return r"""
 ---
 
 \* Other names and brands may be claimed as the property of others.
@@ -184,7 +184,7 @@ def GetFooter():
     numberOfControls = 0
 
     for line in srcFile:
-        separator = re.search("^CLI_CONTROL_SEPARATOR\((.*)\)$", line)
+        separator = re.search(r"^CLI_CONTROL_SEPARATOR\((.*)\)$", line)
         if separator:
             full = separator.group(1).strip()
 
@@ -198,7 +198,7 @@ def GetFooter():
             numberOfSeparators = numberOfSeparators + 1
             continue
 
-        control = re.search("^CLI_CONTROL\((.*)\)$", line)
+        control = re.search(r"^CLI_CONTROL\((.*)\)$", line)
         if control:
             full = control.group(1).strip()
 
@@ -218,8 +218,8 @@ def GetFooter():
             # Replace underscores with escaped underscores:
             description = description.replace("_", "\\_")
             # Escape angle brackets:
-            description = description.replace("<", "\<")
-            description = description.replace(">", "\>")
+            description = description.replace("<", r"\<")
+            description = description.replace(">", r"\>")
 
             docFile.write('##### `' + name + '` (' + type + ')\n\n')
             docFile.write(description + '\n\n')