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Is index a built in feature of Python?
How does the interpreter know what index is referring to? Is this a built in feature that automatically points to an object's position in a sequence?
Joseph YhuPHP Development Techdegree Graduate 47,388 Points
No it's just a variable.
index = 1, declares the variable and sets it to 1. So the first time through the loop, the printed string would be
1. roast beef. This line:
index+=1 increments the index variable by 1, so the next time through the loop the printed string would be
2. cucumbers. And so on until we looped through all the items in the groceries list.