首頁(yè) 猿問 python如何將dict轉(zhuǎn)成list

python如何將dict轉(zhuǎn)成list

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德瑪西亞99 2019-05-25 13:49:19

我有很多個(gè)dict，例如{A:A1,B:B2,C:C3,D:D4},{A:AA1,C:CC3,D:DD4,E:EE5},{A:AAA1,B:BBB2,C:CCC3,D:DDD4,E:EEE5}。我想得到一個(gè)類似行列轉(zhuǎn)置后的LIST,效果如下:[A,B,C,D,E],[A1,B2,C3,D4,NULL],[AA1,NULL,CC3,DD4,EE5],[AAA1,BBB2,CCC3,DDD4,EEE5]]簡(jiǎn)單說(shuō)明：list是一個(gè)合集，如果確實(shí)Key的value用null補(bǔ)充key作為一個(gè)list，value也是list，key和value的順序要一致

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小唯快跑啊

TA貢獻(xiàn)1863條經(jīng)驗(yàn) 獲得超2個(gè)贊

python3pandas>>>importpandasaspd>>>data=[{'A':'A1','B':'B2','C':'C3','D':'D4'},{'A':'AA1','C':'CC3','D':'DD4','E':'EE5'},{'A':'AAA1','B':'BBB2','C':'CCC3','D':'DDD4','E':'EEE5'}]>>>df=pd.DataFrame(data).fillna('null')>>>ls=df.values.tolist()>>>ls.insert(0,df.columns.tolist())>>>ls[['A','B','C','D','E'],['A1','B2','C3','D4','null'],['AA1','null','CC3','DD4','EE5'],['AAA1','BBB2','CCC3','DDD4','EEE5']]>>>

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TA貢獻(xiàn)2021條經(jīng)驗(yàn) 獲得超8個(gè)贊

這是針對(duì)一個(gè)dictkey=list(dict.keys())value=list(dict.values())如果有多個(gè)dict,比如dict1：{A:A1,B:B2,C:C3,D:D4}dict2：{A:AA1,C:CC3,D:DD4,E:EE5}dict3：{A:AAA1,B:BBB2,C:CCC3,D:DDD4,E:EEE5}那么：dict1={'A':'A1','B':'B2','C':'C3','D':'D4'}dict2={'A':'AA1','C':'CC3','D':'DD4','E':'EE5'}dict3={'A':'AAA1','B':'BBB2','C':'CCC3','D':'DDD4','E':'EEE5'}key1=list(dict1.keys())key2=list(dict2.keys())key3=list(dict3.keys())keys=list(set(key1).union(set(key2),set(key3)))#key取并集result=[keys]fordictin[dict1,dict2,dict3]:value=[]forkeyinkeys:item=dict[key]ifkeyindictelse'NULL'value.append(item)result.append(value)print"result--{}---".format(result)