python - How can I give arguments from list elements to a class?

Question

I'm trying to giving arguments from several lists to a class. I tried these:

for i in range(len(myList)): # or just myList
    myList.append(MyClass(names[i], cities[i], ages[i], problems[i]))

or

for i in range(len(myList)):

    name = names[i]
    city = cities[i]
    age = ages[i]
    problem = problems[i]

    myList.append(MyClass(name, city, age, problem))

But it didn't work and there is no error when i print myList it's just empty. I am probably making a wrong logic but I could not figure it out.

question from:https://stackoverflow.com/questions/65858878/how-can-i-give-arguments-from-list-elements-to-a-class

Answer 1

You need to use the length from one of your lists populated with data instead. If myList is empty before the for loop starts it will iterate zero times because len(myList) == 0.

Use e.g. for i in range(names): instead. Assuming your lists with data (names, cities, ages and problems) has the same length.