improve TypeError on screen instantiate

1 files changed, 5 insertions, 1 deletions

diff --git a/mytest.py b/mytest.py
index 74aa2fd1..ef2f6fb6 100644
--- a/mytest.py
+++ b/mytest.py
@@ -90,7 +90,11 @@ class Session:
 	
 	def create(self, screen, arguments):
 		# creates an instance of 'screen' (which is a class)
-		return screen(self, *arguments)
+		try:
+			return screen(self, *arguments)
+		except TypeError, x:
+			errstr = "Screen %s(%s): %s" % (str(screen), str(arguments), str(x))
+			raise TypeError(errstr)
 	
 	def instantiateDialog(self, screen, *arguments):
 		# create dialog