MLS C1 W2 practice lab exercise 1: NameError: name 'x' is not defined

Course Q&A Machine Learning Specialization Supervised ML: Regression and Classification
1

I ran all previous codes but the error says x is not defined. It would be great if anyone helps. Thanks a lot!

Screen Shot 2022-07-26 at 18.36.48
Screen Shot 2022-07-26 at 18.36.48732×108 6.29 KB

2

Simply says variable x is not defined, maybe you wrote X instead of x, or maybe you are not running that cell.

3

Thanks for your answer! I checked all these possible problems but I could not catch anything wrong.

4

I recommend you keep looking, because somewhere you are using ‘x’ incorrectly.

5

I will take a look at it again. Thank you!

6

Perhaps one lead is to find where your x was defined. Ifx is only defined inside a function, but is called outside the function, that error can happen. Or if you use x inside a function, but the function definition line does not have a x among its function input arguments, we may end up with that error too. Lastly, check if xwas defined before it is called.

1 Like
7

Thanks a lot for your response! But unfortunately, I still could not detect the error. I have just basic information about coding and Python.

8

Please download your notebook .ipynb file and send it to me via a private message. I’ll see if I can find the issue.

1 Like
9

For others who may find this thread:

Python relies on your code to have correct indentation. Be sure you use consistent indentation for all of the code that is inside a code structure.