@cached_property
    def exception_name(self):
        if self.exc_info is not None:
            cls = self.exc_info[0]
            return u(cls.__module__ + '.' + cls.__name__)
Validates a key.
dataset/ETHPy150Open getlogbook/logbook/logbook/base.py/LogRecord.exception_name--crossover with--dataset/ETHPy150Open GoogleCloudPlatform/python-compat-runtime/appengine-compat/exported_appengine_sdk/google/appengine/datastore/cloud_datastore_validator.py/_EntityValidator.validate_key