CODEWITHSUNDEEP
python
user2655793
user2655793

Reputation: 33

Python code compilation issue

class student:
    def __init__(self, name, age, mark):
        self.name = name
        self.age = age
        self.mark = mark

std1 = student("name1", 14, 45)
std2 = student("name2", 13, 90)
std3 = student("name3", 14, 70)
std4 = student("name4", 14, 80)
std5 = student("name5", 13, 75)

listofStds = ["std1", "std2", "std3", "std4", "std5"]
for x in sorted(listofStds,key=lambda x: x.mark):
   print x

Please help. I'm a python beginner and I am trying out this simple sorting program using classes but I keep getting the following errors

AttributeError: 'str' object has no attribute 'mark'

Upvotes: 1

Views: 72

Answers (1)

Zdeslav Vojkovic
Zdeslav Vojkovic

Reputation: 14581

listofStds is a list of strings, not a list of student instances. You are trying to sort it by attribute mark which doesn't exist for strings.

You probably wanted to have a list of students, so you need this:

listofStds = [std1, std2, std3, std4, std5]

Upvotes: 5

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