import sys class PasswordSetError(Exception): """Raised when the password can't be set. """ class PasswordDeleteError(Exception): """Raised when the password can't be deleted. """ class InitError(Exception): """Raised when the keyring could not be initialised """ class ExceptionRaisedContext(object): """ An exception-trapping context that indicates whether an exception was raised. """ def __init__(self, ExpectedException=Exception): self.ExpectedException = ExpectedException self.exc_info = None def __enter__(self): self.exc_info = object.__new__(ExceptionInfo) return self.exc_info def __exit__(self, *exc_info): self.exc_info.__init__(*exc_info) return self.exc_info.type and issubclass( self.exc_info.type, self.ExpectedException) class ExceptionInfo(object): def __init__(self, *info): if not info: info = sys.exc_info() self.type, self.value, self.traceback = info def __bool__(self): """ Return True if an exception occurred """ return bool(self.type) __nonzero__ = __bool__