execfile mentioned in lesson 1.2.5 has been long deprecated in python3

[krishnakumarg1984]

In lesson 1.2.5, one of the notes says:

Other interpreters also offer the possibility to execute scripts (e.g., execfile in the plain Python interpreter, etc.).

However, execfile has long been deprecated in python 3. I think the relavent syntax in python3 is exec(open("./filename").read())

[stefanv]

Since this is something you very seldom do (it would be better to import a module, rather than exec it), I'd opt for removing that box entirely.