Update the code to better reflect recommended style:

Use != instead of <> since <> is documented as "obsolescent".
Use "is" and "is not" when comparing with None or type objects.
diff --git a/Lib/multifile.py b/Lib/multifile.py
index e43d331..54de947 100644
--- a/Lib/multifile.py
+++ b/Lib/multifile.py
@@ -155,7 +155,7 @@
 				self.lastpos = abslastpos - self.start
 
 	def is_data(self, line):
-		return line[:2] <> '--'
+		return line[:2] != '--'
 
 	def section_divider(self, str):
 		return "--" + str