Hello fellow coders,
Starting from line 6 is my own attempt to code,above this is the solution
The difference I found is that my y and n didn’t have the single quotations
How are we supposed to know when to have these single quotations?

Thank you

Single or double quotation marks denote strings-you should be familiar with strings from past lessons. raw_input turns the input from the console into a string, which means you conditions should check strings. If you don’t have any quotation marks, the program treats the object as a variable. In your case, it treats y as a variable, and as it is (variable y) is not defined, an error is appropriately raised.

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