替换字典内列表中的特定索引？

Question

how to replace specific index in list inside dictionary?

I have

dictionary = { "one" : 1, values : [2, 3, "apples", 4]}

I want to change "apples" into "pears", how do I do that?

Answer 1

There are a couple of things you can do:

• If you know the specific index of the value you wish you replace you can simply do:

   dictionary['values'][2] = "pears"

• If the specific index is always in question but the value you wish to replace is known, you can use list.index like so:

   dictionary['values'][dictionary['values'].index('apples')] = "pears"

Also just an FYI, your dict "values" entry should be surrounded by quotes or you will get an error in this example.

dictionary = { "one" : 1, "values" : [2, 3, "apples", 4]}

Answer 2

If you know it's always in a list but can be in different places in that list and under different keys in the dict you can use this:

     def apples_to_pears(dictionary):
          for key, value in dictionary.items():
              if isinstance(value, list):
                  dictionary[key]=["pears" if i == "apples" else i for i in value]