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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 network_info(host=None,
                 admin_username=None,
                 admin_password=None,
                 module=None):
    '''
    Return Network Configuration

    CLI Example:

    .. code-block:: bash

        salt dell dracr.network_info
    '''

    inv = inventory(host=host, admin_username=admin_username,
                    admin_password=admin_password)
    if inv is None:
        cmd = {}
        cmd['retcode'] = -1
        cmd['stdout'] = 'Problem getting switch inventory'
        return cmd

    if module not in inv.get('switch') and module not in inv.get('server'):
        cmd = {}
        cmd['retcode'] = -1
        cmd['stdout'] = 'No module {0} found.'.format(module)
        return cmd

    cmd = __execute_ret('getniccfg', host=host,
                        admin_username=admin_username,
                        admin_password=admin_password,
                        module=module)

    if cmd['retcode'] != 0:
        log.warning('racadm returned an exit code of %s', cmd['retcode'])

    cmd['stdout'] = 'Network:\n' + 'Device = ' + module + '\n' + \
                    cmd['stdout']
    return __parse_drac(cmd['stdout'])