CODEWITHSUNDEEP
python-3.xdictionary
Dev
Dev

Reputation: 5

Summing Unique Integers in Dictionary with Duplicate Values

I have a .txt file that I opened and converted to a list using the .readlines method.

with open('superheroes.txt') as f:
    hero = f.readlines()

I read it into an empty dictionary and since the file had a lot of duplicate strings but unique numbers, I chose to make the unique integers the keys and the duplicate strings the values using this code:

heroes = {}

for i in range(len(hero)):
    name, num = hero[i].strip().split("\t")

    heroes[int(num)] = name

The output of the print statement gives something similar to this:

{1867: 'Superman', 2904: 'Batman', 783: 'Wonderwoman', 4637: 'Superman', 8392: 'Batman', etc}

So far, I was able to append all the keys of a certain value into a unique list and manually sorted them using a for loop and an if statement:

superheroes = list(set(heroes.values())) #Gets all the unique values into one list

print(superheroes.sort()) #Ensures that the positions don't change when sorting

supes = []
bats = []
wonder = []
flash = []
cap = []

for entry in heroes:
    if heroes[entry] == superheroes[0]:
        bats.append(entry)
    elif heroes[entry] == superheroes[1]:
        cap.append(entry)
    elif heroes[entry] == superheroes[2]:
        flash.append(entry)
    elif heroes[entry] == superheroes[3]:
        supes.append(entry)
    else:
        wonder.append(entry)

print("People Saved: ")
print("Batman ", sum(bats))
print("Captain America ", sum(cap))
print("Flash ", sum(flash))
print("Superman ", sum(supes))
print("Wonderwoman ", sum(wonder))

After this, I would have to find a method to put these values into a new dictionary. My task is to sum the keys and only have the values shown once. Meaning that all the people they saved must be a single integer value that can then be summed together with another dictionary like this.

How can I sum all the keys of each unique value together and display them within the dictionary? I can only use vanilla Python 3.x code and no other modules can be imported.

Upvotes: 0

Views: 48

Answers (1)

Michael
Michael

Reputation: 2566

I am not sure to get the full picture of your question. You are looking for a way to sum all the key and display them as a dictionary where the key would be the value of your input and the value would be the sum of the key of your input.

Would this be helpful

input = {1867: 'Superman', 2904: 'Batman', 783: 'Wonderwoman', 4637: 'Superman', 8392: 'Batman'}
output = {v:k for k, v in input.items()}

This produce

>>> {'Superman': 4637, 'Batman': 8392, 'Wonderwoman': 783}

Upvotes: 0

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