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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 _save_db():
 """Serializes the contents of the script db to JSON."""

    from pyci.utility import json_serial
    import json
    vms("Serializing DB to JSON in {}".format(datapath))
    with open(datapath, 'w') as f:
        json.dump(db, f, default=json_serial)