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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 default_metadata_db_path():
 """Helper to get the default path for the metadata file. :returns: The path to where the default location of the metadata database is. Maps to which is ~/.inasafe.metadata35.db :rtype: str """


        home = expanduser("~")
        home = os.path.abspath(os.path.join(home, '.inasafe', 'metadata.db'))

        return home