m_start =date +' 09:00'
    m_end =date +' 13:00'

    rsv_1 ={
            'act':'set_resv',
            'dev_id':dev_id,
            'start':m_start,
            'end':m_end,
            }

'''
    rsv_2 ={
            '_':'',
            'act':'set_resv',
            'dev_id':dev_id,
            'start':'2018-05-21 13:00',
            'end_time':'',
            'kind_id':'',
            'lab_id':'',
            'memo':'',
            'prop':'',
            'room_id':'',
            'end':'2018-05-21 17:00',
            'start_time':'',
            'term':'',
            'test_id':'',
            'test_name':'',
            'type_name':'',
            'type':'dev',
            'up_file':'',
            }
    rsv_3 ={
            '_':'','act':'set_resv',
            'dev_id':dev_id,
            'start':'2018-05-21 17:00',
            'end_time':'',
            'kind_id':'',
            'lab_id':'',
            'memo':'',
            'prop':'',
            'room_id':'',
            'end':'2018-05-21 21:00',
            'start_time':'',
            'term':'',
            'test_id':'',
            'test_name':'',
            'type_name':'',
            'type':'dev',
            'up_file':'',
            }
'''        
    session =requests.Session()
    req = session.post(init_url,data=keywords,headers=headers)

注意，这里的多行注释会报缩进错误，原因是因为python用缩进标志程序块，包括注释，所以，注释同样要注意与所要注释的程序块对齐．
改进如下，请注意下面代码中多行缩进的缩进情况：

    m_start =date +' 09:00'
    m_end =date +' 13:00'

    rsv_1 ={
            'act':'set_resv',
            'dev_id':dev_id,
            'start':m_start,
            'end':m_end,
            }

    '''
    rsv_2 ={
            '_':'',
            'act':'set_resv',
            'dev_id':dev_id,
            'start':'2018-05-21 13:00',
            'end_time':'',
            'kind_id':'',
            'lab_id':'',
            'memo':'',
            'prop':'',
            'room_id':'',
            'end':'2018-05-21 17:00',
            'start_time':'',
            'term':'',
            'test_id':'',
            'test_name':'',
            'type_name':'',
            'type':'dev',
            'up_file':'',
            }
    rsv_3 ={
            '_':'','act':'set_resv',
            'dev_id':dev_id,
            'start':'2018-05-21 17:00',
            'end_time':'',
            'kind_id':'',
            'lab_id':'',
            'memo':'',
            'prop':'',
            'room_id':'',
            'end':'2018-05-21 21:00',
            'start_time':'',
            'term':'',
            'test_id':'',
            'test_name':'',
            'type_name':'',
            'type':'dev',
            'up_file':'',
            }
    '''
    session =requests.Session()
    req = session.post(init_url,data=keywords,headers=headers)