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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 dump_index(args, idx):
 """Create a metatab file for the index"""


    import csv
    import sys

    from metatab import MetatabDoc

    doc = MetatabDoc()

    pack_section = doc.new_section('Packages', ['Identifier', 'Name', 'Nvname', 'Version', 'Format'])

    r = doc['Root']
    r.new_term('Root.Title', 'Package Index')

    for p in idx.list():

        pack_section.new_term('Package',
                   p['url'],
                   identifier=p['ident'],
                   name=p['name'],
                   nvname=p['nvname'],
                   version=p['version'],
                   format=p['format'])

    doc.write_csv(args.dump)