Recusive addition of list is not working properly

[mrtushartiwari]

Chapter 9: Scope of names I am using python3 for the addlist(list) function. unsupported operand type(s) for +=: 'int' and 'list'

[ricardoduarte]

Thank you for opening this issue. Actually, all of the examples included in this book version works only with Python 2.x (it is an old book).

There is a Python 3.x version of this book but it is only a printed version and it was written in Brazilian Portuguese.

When the editor rights expire, maybe we'll publish this book online.