I have used both python 9 and 12 import csv with open("weather_data.csv") as data_file: data = csv.reader(data_file) temp = [] for i in data: if i != "temp": temp.append(int(i[1])) print(data) I was expecting a list with full of integers but i am getting error ValueError: invalid literal for int() with base 10: 'temp' Continue reading...