排序列表字典由字典裏面字典的關鍵在Python

我有以下數據結構：排序列表字典由字典裏面字典的關鍵在Python

[ 
{ 
original_price: { 
value: "" 
}, 
promos: [ ], 
local_id: "122863", 
url: "link", 
title: "abc", 
current_price: { 
value: 19.5 
}, 
image: "link", 
selections: { 
color: "BLACK", 
length: "", 
size: "7" 
}, 
store: "abc" 
}, 
{ 
original_price: { 
value: "" 
}, 
promos: [ ], 
local_id: "122863", 
url: "link", 
title: "abc", 
current_price: { 
value: 19.5 
}, 
image: "link", 
selections: { 
color: "BLACK", 
length: "", 
size: "9" 
}, 
store: "abc" 
}, 
{ 
original_price: { 
value: "" 
}, 
promos: [ ], 
local_id: "122863", 
url: "link", 
title: "abc", 
current_price: { 
value: 19.5 
}, 
image: "link", 
selections: { 
color: "BLACK", 
length: "", 
size: "6" 
}, 
store: "abc" 
} 
]

我試着用代碼「大小」鍵對它進行排序：

def order_size(self, raw_sizes): 
    for i in range(len(raw_sizes)): 
     print i 
     for j in range(i+1, len(raw_sizes)): 
      #print raw_sizes 
      if raw_sizes[j]['selections']['size'] < raw_sizes[i]['selections']['size']: 
       raw_sizes[j], raw_sizes[i] = raw_sizes[i], raw_sizes[j] 


    #print raw_sizes 
    return raw_sizes

但我不能。請幫幫我。我期望的結果是：

[ 
{ 
original_price: { 
value: "" 
}, 
promos: [ ], 
local_id: "122863", 
url: "link", 
title: "abc", 
current_price: { 
value: 19.5 
}, 
image: "link", 
selections: { 
color: "BLACK", 
length: "", 
size: "6" 
}, 
store: "abc" 
}, 
{ 
original_price: { 
value: "" 
}, 
promos: [ ], 
local_id: "122863", 
url: "link", 
title: "abc", 
current_price: { 
value: 19.5 
}, 
image: "link", 
selections: { 
color: "BLACK", 
length: "", 
size: "7" 
}, 
store: "abc" 
}, 
{ 
original_price: { 
value: "" 
}, 
promos: [ ], 
local_id: "122863", 
url: "link", 
title: "abc", 
current_price: { 
value: 19.5 
}, 
image: "link", 
selections: { 
color: "BLACK", 
length: "", 
size: "9" 
}, 
store: "abc" 
} 
]

這是爲了字典的列表進行了排序的字典裏面的關鍵字典

來源

2013-03-28 son.hoang

那是一個冒泡？真？

無論如何，有沒有必要寫自己的排序功能：

raw_sizes.sort(key=lambda d: d['selections']['size'])

來源

2013-03-28 09:13:43

我覺得關鍵FUNC應該是拉姆達d：d [ '選擇'] [ '大小'] – 2013-03-28 09:17:33

@PiotrHajduga感謝，改變 - 我無法在解釋器中檢查它，因爲原始的「dict」不是Python語法。 – 2013-03-28 09:18:47

是的，這是泡泡。我嘗試你的建議，但異常類型：\t KeyError異常異常值：\t 「大小」。帶排序功能我無法訪問字典裏面的字典鍵 – 2013-03-28 09:19:10

排序列表字典由字典裏面字典的關鍵在Python

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