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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 CopyVcardFields(new_vcard, auth_vcard, field_names):
 """Copy vCard field values from an authoritative vCard into a new one."""

    for field in field_names:
        value_list = auth_vcard.contents.get(field)
        new_vcard = SetVcardField(new_vcard, field, value_list)
    return new_vcard