01 - IPython - beyond plain Python error NameError: name '_7' is not defined

[pleabargain]

error

Walking through the tut and I found this error:

In [15]:

_7 == Out[7]#<<<<<<<<<<<<<<<<<<

NameError Traceback (most recent call last)
in ()
----> 1 _7 == Out[7]

NameError: name '_7' is not defined

[minrk]

Then you executed it differently from the way we ran it in a past tutorial, because stepping through it right now it works as written.