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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 edit(env, securitygroup_id, rule_id, remote_ip, remote_group, direction, ethertype, port_max, port_min, protocol):
 """Edit a security group rule in a security group."""

    mgr = SoftLayer.NetworkManager(env.client)

    data = {}
    if remote_ip:
        data['remote_ip'] = remote_ip
    if remote_group:
        data['remote_group'] = remote_group
    if direction:
        data['direction'] = direction
    if ethertype:
        data['ethertype'] = ethertype
    if port_max is not None:
        data['port_max'] = port_max
    if port_min is not None:
        data['port_min'] = port_min
    if protocol:
        data['protocol'] = protocol

    ret = mgr.edit_securitygroup_rule(securitygroup_id, rule_id, **data)

    if not ret:
        raise exceptions.CLIAbort("Failed to edit security group rule")

    table = formatting.Table(REQUEST_BOOL_COLUMNS)
    table.add_row([ret['requestId']])

    env.fout(table)