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Python Object-Oriented Python Instant Objects __init__

Posted by Angel Rosario
Angel Rosario
1,994 Points

Using **kwargs and setattr

I keep getting "Bummer: Couldn't find 'Student'."

first_class.py 
class Student:
    name = "Your Name"

    def __init__(self, name, **kwargs):
        self.name = name

    for key, value in kwargs.item():
        setattr(self, key, value)

    def praise(self):
        return "You inspire me, {}".format(self.name)

    def reassurance(self):
        return "Chin up, {}. You'll get it next time!".format(self.name)

    def feedback(self, grade):
        if grade > 50:
            return self.praise()
        return self.reassurance()
André Nårstad
André Nårstad
2,951 Points
André Nårstad
André Nårstad
2,951 Points

As Kenneth writes in the teacher notes:

setattr lets me set attributes that I don't know about beforehand. I can, of course, go back and explicitly define a color attribute but what if the next user comes along and she wants a height or weight attribute? A year from now, Animal.init might be hundreds of lines long with attribute declarations! And some of those attributes will only apply to a few animals!

But...if I'm clever and use setattr, I can just happily accept any and all attributes that someone gives for a particular Animal instance without having to continually update init."

So try to use setattr with an for loop. That should do it.

for key, value in kwargs.items():
    setattr(self, key, value)

EDIT: or just indent the one for loop you allready got in there :) saw it a little bit late..

1 Answer

Angel Rosario
Angel Rosario
1,994 Points

I had to indent and I was missing the "s" in "items".