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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 load_from_file(cls, file_path):
 """Load the meta data given a file_path or empty meta data"""

        data = None
        if os.path.exists(file_path):
            metadata_file = open(file_path)
            data = json.loads(metadata_file.read())
        return cls(initial=data)