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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 ip_prefixes_sanity_check(config, bird_configuration):
 """Sanity check on IP prefixes. Arguments: config (obg):
 A configparser object which holds our configuration. bird_configuration (dict):
 A dictionary, which holds Bird configuration per IP protocol version. """

    for ip_version in bird_configuration:
        modify_ip_prefixes(config,
                           bird_configuration[ip_version]['config_file'],
                           bird_configuration[ip_version]['variable_name'],
                           bird_configuration[ip_version]['dummy_ip_prefix'],
                           bird_configuration[ip_version]['reconfigure_cmd'],
                           bird_configuration[ip_version]['keep_changes'],
                           bird_configuration[ip_version]['changes_counter'],
                           ip_version)