Makes the CSharp wrapper generator to work with Python 3

wrappers/csharp/genwrapper.py

@@ -22,7 +22,7 @@ import sys
 import pystache
 
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..', 'tools'))
-print sys.path
+print(sys.path)
 import genapixml as CApi
 import abstractapi as AbsApi
 import metadoc
@@ -604,17 +604,18 @@ def main():
 
 	interfaces = []
 	classes = []
-	for _class in parser.classesIndex.values() + parser.interfacesIndex.values():
-		if _class is not None:
-			try:
-				if type(_class) is AbsApi.Class:
-					impl = ClassImpl(_class, translator)
-					classes.append(impl)
-				else:
-					impl = InterfaceImpl(_class, translator)
-					interfaces.append(impl)
-			except AbsApi.Error as e:
-				print('Could not translate {0}: {1}'.format(_class.name.to_camel_case(fullName=True), e.args[0]))
+	for index in [parser.classesIndex, parser.interfacesIndex]:
+		for _class in index.values():
+			if _class is not None:
+				try:
+					if type(_class) is AbsApi.Class:
+						impl = ClassImpl(_class, translator)
+						classes.append(impl)
+					else:
+						impl = InterfaceImpl(_class, translator)
+						interfaces.append(impl)
+				except AbsApi.Error as e:
+					print('Could not translate {0}: {1}'.format(_class.name.to_camel_case(fullName=True), e.args[0]))
 
 	wrapper = WrapperImpl(enums, interfaces, classes)
 	render(renderer, wrapper, args.outputdir + "/" + args.outputfile)