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-rw-r--r--examples/statemachine/libraryBookDemo.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/examples/statemachine/libraryBookDemo.py b/examples/statemachine/libraryBookDemo.py
index 95e5996..5e73f07 100644
--- a/examples/statemachine/libraryBookDemo.py
+++ b/examples/statemachine/libraryBookDemo.py
@@ -24,9 +24,9 @@ class RestrictedBook(Book):
# specialized checkout to check permission of user first
def checkout(self, user=None):
if user in self._authorized_users:
- self._state = self._state.checkout()
+ super().checkout()
else:
- raise Exception("{0} could not check out restricted book".format((user, "anonymous")[user is None]))
+ raise Exception("{0} could not check out restricted book".format(user if user is not None else "anonymous"))
def run_demo():