我有兩本詞典 dict1 和 dict2。我應該使用 dict2 值更新（或創建新的 dict3）dict1 列表值，因為 dict1 列表值是 dict2 的鍵。注意-我只需要使用 Python 2.7。感謝幫助 ?。?！dict1 = {'key1':[v1,v2,v3], 'key2':[v5,v9], 'key3':[v2,v6,v4,v11],'key4':[v3,v5,v0]}dict2 = {'v1':[Alpha], 'v2':[Beta], 'v3':[Gamma], 'v4':[Delta], 'v5':[Epsilon], 'v6':[Zeta]Output neededdict3 = {'key1':[Alpha,Beta,Gamma], 'key2':[Epsilon,v9], 'key3':[Beta,Zeta,Delta,v11],'key4':[Gamma,Epsilon,v0]def final(dict1,dict2): dict3 = {} for k,v in dict1.iteritems(): if v in dict2: if k in dict3: dict3[k].append(dict2[v]) else: dict3[k] = dict2[v] else: dict3[k].append(v) return dict3
3 回答
一只斗牛犬
TA貢獻1784條經驗 獲得超2個贊
dict1 = {'key1':['v1','v2','v3'], 'key2':['v5','v9'], 'key3':['v2','v6','v4','v11'],'key4':['v3','v5','v0']}
dict2 = {'v1':['Alpha'], 'v2':['Beta'], 'v3':['Gamma'], 'v4':['Delta'], 'v5':['Epsilon'], 'v6':['Zeta']}
dict3 = {k:[dict2.get(vv, [vv])[0] for vv in v] for k, v in dict1.items()} # or dict1.iteritems() in case of Python2
print(dict3)
印刷：
{'key1': ['Alpha', 'Beta', 'Gamma'], 'key2': ['Epsilon', 'v9'], 'key3': ['Beta', 'Zeta', 'Delta', 'v11'], 'key4': ['Gamma', 'Epsilon', 'v0']}
回首憶惘然
TA貢獻1847條經驗 獲得超11個贊
您可以使用map()迭代列表并將每個項目作為函數的參數傳遞dict.get()。然后使用filter()您可以從數組中刪除所有None元素。要構建最終列表，您可以使用sum().
代碼：
def final(dict1, dict2):
dict3 = {}
for k, v in dict1.iteritems():
dict3[k] = sum(filter(None, map(dict2.get, v)), [])
return dict3
也可以在不調用任何函數的情況下完成：
def final(dict1, dict2):
dict3 = {}
for k, v in dict1.iteritems():
tmp = []
for i in v:
if i in dict2:
tmp += dict2[i]
else:
tmp.append(i)
dict3[k] = tmp
return dict3
蝴蝶不菲
TA貢獻1810條經驗 獲得超4個贊
這些for循環應該可以解決問題：
dict1 = {'key1':['v1','v2','v3'],
'key2':['v5','v9'],
'key3':['v2','v6','v4','v11'],
'key4':['v3','v5','v0']}
dict2 = {'v1':['Alpha'],
'v2':['Beta'],
'v3':['Gamma'],
'v4':['Delta'],
'v5':['Epsilon'],
'v6':['Zeta']}
dict3 = {}
for key in dict1.keys():
for v in dict1[key]:
temp = [dict2[i] if i in dict2.keys() else v for i in dict1[key]]
for i,e in enumerate(temp):
if type(e) == type([]):
temp[i] = e[0]
dict3.update({key:temp})
print(dict3)
輸出：
{'key1': ['Alpha', 'Beta', 'Gamma'],
'key2': ['Epsilon', 'v9'],
'key3': ['Beta', 'Zeta', 'Delta', 'v11'],
'key4': ['Gamma', 'Epsilon', 'v0']}
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