First Post/ Class Error Question

[jvan1601]

Hello everyone, this is my first post on this (or any) forum. Python is my first programming language, and I am learning it on my own time as a hobby. I am using a couple of different books (Python Crash Course and Learn Python the Hard Way) to get started and working through the exercises as they come up. I am currently working with modules and classes. I keep getting a NameError that says "Self is not defined" and I'm not quite sure I understand why. My question is I'm not exactly sure what my error is and how to correct it (?) 

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class Dog(object): """A simple attempt to model a dog.""" def __init__(self, name, age): """Initialize name and age attributes.""" self.name = name self.age = age def sit(self): """Simulate a dog sitting in response to a command.""" print(self.name.title() + " is now sitting.") def roll_over(self): """Simulate rolling over in response to acommand.""" print(self.name.title() + " rolled over!") my_dog = Dog('willie', 6) print("My dog's name is " + my_dog.name.title() + ".") print("My dog is " + str(my_dog.age) + " years old.")

This produces: 

Error:
Traceback (most recent call last):
  File "dog.py", line 1, in <module>
    class Dog(object):
  File "dog.py", line 9, in Dog
    print(self.name.title() + " is now sitting.")
NameError: name 'self' is not defined

P.S. I apologize if I didn't word my question or problem correctly, or if there is a thread identical to this. I'm not totally sure how to begin asking something like this.  Thanks for any response!

[buran]

Please, repost your code with proper indentation. Most probably that's the problem, but the code in your post does not produce this error

---

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class Dog(object):    """A simple attempt to model a dog."""    def __init__(self, name, age):        """Initialize name and age attributes."""        self.name = name        self.age = age    def sit(self):        """Simulate a dog sitting in response to a command."""        print(self.name.title() + " is now sitting.")    def roll_over(self):        """Simulate rolling over in response to acommand."""        print(self.name.title() + " rolled over!") my_dog = Dog('willie', 6) print("My dog's name is " + my_dog.name.title() + ".") print("My dog is " + str(my_dog.age) + " years old.")

Output:
My dog's name is Willie.
My dog is 6 years old.

[jvan1601]

I guess it was an indentation error. I appreciate your help, after running and copying your indentations it did work. In my file I did have most of the indentations correct, I guess I just missed one.

Thanks again!