AttributeError: 'Robot' object has no attribute 'introduce

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

CodePudding user response：

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()

CodePudding user response：

There seems to be a problem with the "init" spelling. not "init" has to __init__ and you have to give some thing to introduce_self because function outside the class. And the code should look like this :

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)

introduce_self(r2)
>>>my name is Jerry

You can also enclose your function in class and do it:

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()
>>>my name is Jerry