#9161: Fix regression in acceptance of unicode strings in add_option calls.

The original change in 2.6 was made during rc1 changeover, and did not
get ported to 2.7.  The original change may not even have been
intentional, but if so it doesn't seem to have caused any problems.

Lib/optparse.py

@@ -1008,7 +1008,7 @@ class OptionContainer:
         """add_option(Option)
            add_option(opt_str, ..., kwarg=val, ...)
         """
-        if type(args[0]) is types.StringType:
+        if type(args[0]) in types.StringTypes:
             option = self.option_class(*args, **kwargs)
         elif len(args) == 1 and not kwargs:
             option = args[0]

Misc/NEWS

@@ -16,6 +16,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #9161: Fix regression in optparse's acceptance of unicode
+  strings in add_option calls.
+
 - Issue #9130: Fix validation of relative imports in parser module.
 
 - Issue #9128: Fix validation of class decorators in parser module.