CODEWITHSUNDEEP
python-2.7
Alex.JvV
Alex.JvV

Reputation: 59

Getting value and key from python Collection

I'm struggling to get single value and key pairs from a Counter in a for loop

I have the following code: 

test= ["test1", "test2", "apps1", "apps2", "random"]

return collections.Counter(i[:4] for i in test)

I get the following: { "rand": 1, "test": 2, "apps": 2, }

I want to know it there a way to get these values & keys based on there position if a for loop, because I'm trying to add it to a json object for an angular app.

The JSON object I want to create looks like this,

returnObject = []
            for i in range(len(collections.Counter(i[:4] for i in test))):
                tempObject ={
                'value': #add counter value in pos i,
                'color': 'rgb(0,19,255)',
                'label': #add counter key in pos i,
                'order': i+1,
                }
                returnObject.append(tempObject)

            print returnObject

Sorry I'm new to this and have tried a lot of different things, but thank you in advance for any help.

Upvotes: 0

Views: 3064

Answers (1)

AChampion
AChampion

Reputation: 30268

Using range(len) is not the canonical way to loop over a container and not very useful for a dict type.

You can directly iterate over containers, e.g.:

counts = collections.Counter(i[:4] for i in test)
for key in counts:
    print(key, counts[key])

Or more directly using .items():

counts = collections.Counter(i[:4] for i in test)
for key, value in counts.items():
    print(key, value)

Upvotes: 1

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