分配字典的鍵的值到一個變量

Question

我在Python下面的代碼：運行

buildXmlUpdate ('21/12/2015', 1, [{'avail': 1, 'price': 100}, {'avail': 3, 'price': 120}]) 

我得到以下輸出時

def buildXmlUpdate(dfrom, roomId, ldays): 

    start_date_sard.text = dfrom 
    roomId = str(roomId) 
    room_id_sard.text = roomId 
    ldays = {'avail': str(), 'price': str()} 
    availability_in_data.text = ldays['avail'] 
    price_in_data.text = ldays['price'] 

    for n in ldays: 
     print (dfrom, roomId, ldays) 

現在

('21/12/2015', '1', {'avail': '', 'price': ''}) 
('21/12/2015', '1', {'avail': '', 'price': ''}) 

在換句話說：

('21/12/2015', '1', {'avail': 1, 'price': 100}) 
('21/12/2015', '1', {'avail': 3, 'price': 120}) 

正如您在這裏看到的，字典avail和price鍵設置爲空字符串，但我想根據方法中的參數ldays設置它們。

我在做什麼錯？

Answer 1

解決：

def buildXmlUpdate(dfrom, roomId, ldays): 

start_date_sard.text = dfrom 
roomId = str(roomId) 
room_id_sard.text = roomId 
#ldays = {'avail': str(), 'price': str()} 
#availability_in_data.text = ldays['avail'] 
#price_in_data.text = ldays['price'] 


for n in ldays: 
    print (dfrom, roomId, n) 
    #availability_in_data.text = get.ldays['avail'] 
    #price_in_data.txt = get.ldays['price'] 
    ldays[-1]['avail'] = str(ldays[-1]['avail']) 
    ldays[-1]['price'] =str(ldays[-1]['price']) 
    availability_in_data.text = ldays[-1]['avail'] 
    price_in_data.text = ldays[-1]['price'] 

謝謝大家！