CODEWITHSUNDEEP
listpython-2.7tuples
Marco Giuseppe de Pinto
Marco Giuseppe de Pinto

Reputation: 605

Python: Count element in a list and putting the result in tuples

I have a list 

["Alfa", "Beta", "Gamma", "Beta", "Alpha"]

I need to count the repetion of elements in this list and to put the result in a list of tuples in descending order.

If the count of two of the elements is the same, I need to sort them in reverse alphabetical order (Z->A)

This is the expected output

[('Beta', 2), ('Alfa', 1), ('Alpha', 1), ('Gamma', 1)]

My idea is to start splitting the string as following

def count_items(string):
    wordlist = string.split(' ')

But I have no idea of how to continue.

Could you please help?

Upvotes: 0

Views: 107

Answers (1)

levi
levi

Reputation: 22697

You can use Counter built module along most_common method

 from collections import Counter

 >>> l = ["Alfa", "Beta", "Gamma", "Beta", "Alpha"]
 >>> Counter(l).most_common()
 >>> [('Beta', 2), ('Alfa', 1), ('Alpha', 1), ('Gamma', 1)]

Upvotes: 1

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