John Mulligan committed 2bf99ff

extract frame check into function, usable by other modules

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Files changed (1)


     return opts
+def firstframe():
+    """returns true if the type error was caused by the first
+    function call in the stack
+    """
+    return len(traceback.extract_tb(sys.exc_info()[2])) == 1
 class Command(object):
     """A thin class representing a command.
             return*args, **opts)
         except TypeError, err:
-            if len(traceback.extract_tb(sys.exc_info()[2])) == 1:
+            if firstframe():
                 raise InvalidArguments(
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