Let me remind you before accessing the third element in this list that lists start from the order. GetFromDict(dataDict, mapList)] = valueĪll but the last element in mapList is needed to find the 'parent' dictionary to add the value to, then use the last element to set the value to the right key. Now suppose we have to access the third element in this list. The power of this function can also be utilized to perform this task. When accessing values in dictionaries, you need to use the key as the lookup: def printMassage (List, mylabel): for d in List: if d 'Label' mylabel: print (d 'Massage') A one-liner: def printMassage (List, mylabel): print ( d 'Massage' for d in List if d Label mylabel) Share. Imagine that n 1 then x n and that is equal to x n 0 resulting in x 1. Therefore, to access 'Lisa' you need to, assume that your list is named l: d l 1 1 is the position of the list containing the dict with 'Lisa' now d is the dictionary. values () To access the element of the list You simply have to declare the index. ) it means that we will extract items from collection on the right side. To access the element of the dictionary you can call the specific key or use the method. Return reduce(operator.getitem, mapList, dataDict)Īnd reuse getFromDict to find the location to store the value for setInDict(): def setInDict(dataDict, mapList, value): Method 4: Using enumerate() Python also offers enumerate() with helps to iterate over all kinds of containers, be it dictionary or a list. On the right side, it's a syntax for list comprehension (check documentation). Use reduce() to traverse the dictionary: from functools import reduce # forward compatibility for Python 3
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