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Python

Posted by Ewerton Luna
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Ewerton Luna
Full Stack JavaScript Techdegree Graduate 24,031 Points

Instead of using setattr, I tried doing this and it didn't work. Why?

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

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

The code was compiled ok. Then, when I declare the object like:

ewerton = Thief("Ewerton", age = 28, hobby = "steal")

The code runs ok too. But if when I try to check some of the object's attribute:

ewerton.age

I get this error message:

Traceback (most recent call last): File "<input>", line 1, in <module> AttributeError: 'Thief' object has no attribute 'age'

Why, instead of using setattr, can't I use a for loop to set values to the object as I would do in other situations?

1 Answer

Dave StSomeWhere
Dave StSomeWhere
19,870 Points
Dave StSomeWhere
Dave StSomeWhere
19,870 Points

When setting self.key - the variable key is not being resolved, it is creating an attribute called "key" - not what you want and why we need to use setattr.

ewerton = Thief("Ewerton", age = 28, hobby = "steal")  
ewerton.key  # check your attribute called key - should = "steal"
Ewerton Luna
.a{fill-rule:evenodd;}techdegree seal-36
Ewerton Luna
Full Stack JavaScript Techdegree Graduate 24,031 Points

Oh... I got it! Very much appreciated!!!