These course materials are Creative Commons Attribution and so they can be used as long as they are attibuted properly. I am happy to help those adopting/adapting these materials make sure their acknowledgement is sufficient. I am always excited to learn of new translations and promote them to my students.
All the material for this course (web site, autograders, PowerPoint, textbook, figures for the textbook, assignments, etc) is in this GitHub repository. The only material that is not in github are the videos and I can provide those as well if they need to be hosted behind a firewall or in a country that has banned YouTube.
You could also provide translations on the YouTube channel https://www.youtube.com/playlist?list=PLlRFEj9H3Oj7Bp8-DfGpfAfDBiblRfl5p
My ultimate goal would a series of complete web sites at urls like es.py4e.com, cn.py4e.com, ir.pye4.com with completely translated user experiences that also function as OER repositories for Python materials in those languages. Of course you do not need to use my urls, but I do want to promote the translations of this material and am happy to point my subdomains at your servers or forward requests at those subdomains to your servers.
I have set this up so you can fork my github repository and begin the translation work. I will be happy to help you get your translated work up and available. I have an automatic build server for the text book that takes your latest book in github and produces the PDF and EPUB and hosts it online at http://do1.dr-chuck.com/pythonlearn/.
Do not feel the need to translate everything - many translations simply translate the book. Everything is helpful.
Thanks in advance