Converting strings in a list to integers python

Question

I am trying to open a csv file and convert the values from strings to integers so I can sort the list. Currently when I sort the list the results I get are "[[], ['190'], ['200'], ['250'], ['350'], ['90']]". Here is my code.

import csv

def bubbleSort(scores):
    for length in range(len(scores)-1,0,-1):
        for i in range(length):
            if scores[i]>scores[i+1]:
                temp = scores[i]
                scores[i] = scores[i+1]
                scores[i+1] = temp


with open ("rec_Scores.csv", "rb") as csvfile:
    r = csv.reader(csvfile)
    scores = list(r)


bubbleSort(scores)
print(scores)

This is probably really easy to fix, but I am still new to python so if anyone could help me solve this problem it would be much appreciated.

Answer 1

You need to add scores_int = [int(score) for score in scores] in order to convert the string numbers in your scores list to int numbers. This is what your code should look like:

import csv

def bubbleSort(scores):
    for length in range(len(scores)-1,0,-1):
    for i in range(length):
        if scores[i]>scores[i+1]:
            temp = scores[i]
            scores[i] = scores[i+1]
            scores[i+1] = temp


with open ("rec_Scores.csv", "rb") as csvfile:
r = csv.reader(csvfile)
scores = list(r)
scores_int = [int(score) for score in scores]

    bubbleSort(scores_int)
    print(scores)