Even more coding style cleanup

Fixing some more pylint warnings:

W1401: Anomalous backslash in string
W0623: Redefining name 'name' from outer scope
W0702: No exception type(s) specified
E0102: name: function already defined line n

Change-Id: I5afcdb4771ce210390a79981937806e30900a93c
diff --git a/subcmds/init.py b/subcmds/init.py
index e56b922..48df9e8 100644
--- a/subcmds/init.py
+++ b/subcmds/init.py
@@ -147,7 +147,7 @@
       r.ResetFetch()
       r.Save()
 
-    groups = re.split('[,\s]+', opt.groups)
+    groups = re.split(r'[,\s]+', opt.groups)
     all_platforms = ['linux', 'darwin']
     platformize = lambda x: 'platform-' + x
     if opt.platform == 'auto':