AttributeError: 'Robot' object has no attribute 'introduce_self'

I’m a beginner in class & objects and was wondering why the line r2.introduce_self had an attribute error with an object that doesn’t have an attribute.

class Robot:
    def __init__(self, rname, rcolor, rweight):
        self.name = rname
        self.color = rcolor
        self.weight = rweight


def introduce_self(self):
    print("my name is " + self.name)


r1 = Robot("Tom", "Red", 30)
r2 = Robot("Jerry", "Blue", 40)

r2.introduce_self()

I tried to check if there were any indentation errors but they were all fine, the code is supposed to have an output that says "my name is Jerry". But it still had an attribute error unfortunately

>Solution :

I believe it is because your indentation having issue. introduce_self should be a method for Robot, so it should be having the same indent as __init__ of Robot class.

Try the below code

class Robot:
    def __init__(self, rname, rcolor, rweight):
        self.name = rname
        self.color = rcolor
        self.weight = rweight
    
    def introduce_self(self):
        print("my name is " + self.name)


r1 = Robot("Tom", "Red", 30)
r2 = Robot("Jerry", "Blue", 40)

r2.introduce_self()