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I would like to tranform an array to on object .

I have an array : ['BROOKLYN','STATEN ISLAND','OZONE PARK','SOUTH OZONE PARK', 'JAMAICA','OZONE PARK']

I am going to transofrm it to json object adding ":red" prefix .

colormap = {'NEW YORK': 'red', 'BROOKLYN': 'red', 'STATEN ISLAND': 'red', 'OZONE PARK':'red','SOUTH OZONE PARK':'red', 'JAMAICA':'red','OZONE PARK': 'red'}

How can I do that ?

user3001937
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3 Answers3

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As I understand, you want to create a dict from your list. If so, you can do it like this:

colormap = {x:'red' for x in myList}

Afterwards, you can save it in json format using json module (please see a relevant question Storing Python dictionaries and documentation).

Community
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sashkello
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  1. You can use fromkeys method in the dictionary, like this

    print {}.fromkeys(myArray, "set")

  2. Or you can use zip like this

    print dict(zip(myArray, ["set"] * len(myArray)))

Output

{'OZONE PARK': 'set', 'BROOKLYN': 'set', 'STATEN ISLAND': 'set', 'SOUTH OZONE PARK': 'set', 'JAMAICA': 'set'}
thefourtheye
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    `dict.fromkeys` seems like it would be the right way. (`{}.fromkeys` doesn’t have a lot of meaning.) But why bother with `zip` at all? – Ry- Nov 27 '13 at 05:06
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    `dict.fromkeys` is ideal since the value is immutable. The version with zip...why would you ruin a good answer with that? – John La Rooy Nov 27 '13 at 05:14
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import json

array = ["test", "test1", "test2"]

colors = {item: "red" for item in array}

json_str_colors = json.dumps(colors)

print(repr(json_str_colors))
Tim Wilder
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