[英]same key with different values dictionary
我有一本存儲鍵值對的字典:
s={"one":["two","three","four"],"two":["five","six"],"three":["ten","nine"]}
我希望能夠有一個字典,鍵為“ one”和列表
["test","succesfull"]
因此最終結果將是:
s={"one":["two","three","four"],"two":["five","six"],"three":["ten","nine"],"one":["test","succesfull"]}
我需要能夠擁有兩個具有不同值的相同鍵,並且仍然能夠獨立訪問它們中的任何一個
我的方法是再增加一個級別,
s={"one":{"data": ["two","three","four"], "test": "successfull"},"two":["five","six"],"three":["ten","nine"]}
希望能滿足要求
我認為最好的方法是將列表列表(如果需要鍵,則為列表字典)作為字典值,將多個條目存儲在同一鍵下,這是列表列表:
# setup
class dd_list(dict):
def __missing__(self,k):
r = self[k] = []
return r
d = dd_list()
d['one'].append(["two","three","four"])
d['two'].append(["five","six"])
d['three'].append(["ten","nine"])
#adding 'one' key again
d['one'].append(["test","successful"])
print (d)
#{'three': [['ten', 'nine']], 'two': [['five', 'six']],
#'one': [['two', 'three', 'four'], ['test', 'successful']]}
python dict鍵的屬性之一是唯一的...
因此在python字典中,鍵應該是唯一的...但是您可以在運行時定義重復項...一旦存儲了字典,則重復項將自動刪除或更新。
在運行時,您可以這樣創建:
mydict = {"a":1, "b":2, "c":3, "a":3}
但是如果要打印,
mydict = {"a" :3, "b":2, "c":3}
在這里a將覆蓋最近的值
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