Python Lookup Value In Dictionary

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Python Lookup Value In Dictionary

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However if you need to do more than one lookup it will be more efficient to create an inverse dictionary ivd v k for k v in d items If there is a possibility of multiple keys with the same value you will need to specify the desired behaviour in this case If your Python is 2 6 or older you can use Notes Use lookup d name d value for d in x if you only need to retrieve the value key instead of the whole dictionary Build the dictionary once and use it for all your lookups If you re only doing one lookup you already have the optimal solution There must be no duplicate name keys Share

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