print(thingtraceback (most recent call last)file ""line in nameerrorname 'thingis not defined unknown variable thing print(thing there' one last aspect of attaching names to values hat we need to consider how do we delete the attachmentfirst of alllet' see what it looks like when we refer to name that isn' known to the system the error message is quite straightforwardname 'thingis not defined if we then create the name and attach it to valuethe integer in this examplewe can then use the name without error message