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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 bootstrap_unihan(metadata, options={}):
 """Download, extract and import unihan to database."""

    options = merge_dict(UNIHAN_ETL_DEFAULT_OPTIONS.copy(), options)

    p = unihan.Packager(options)
    p.download()
    data = p.export()
    table = create_unihan_table(UNIHAN_FIELDS, metadata)
    metadata.create_all()
    metadata.bind.execute(table.insert(), data)