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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def describe_training_job(self, TrainingJobName):
 """Describe a local training job. Args: TrainingJobName (str):
 Training job name to describe. Returns: (dict) DescribeTrainingJob Response. """

        if TrainingJobName not in LocalSagemakerClient._training_jobs:
            error_response = {'Error': {'Code': 'ValidationException', 'Message': 'Could not find local training job'}}
            raise ClientError(error_response, 'describe_training_job')
        else:
            return LocalSagemakerClient._training_jobs[TrainingJobName].describe()