Python 3.5 Tutorial - The Range and XRange Operator
У вашего броузера проблема в совместимости с HTML5
► SPONSORS ◄
Linode Web Hosting ($20.00 CREDIT)
http://bit.ly/2HsnivM
HipsterCode
http://bit.ly/2XTdIrx
Web Development in 2019
http://bit.ly/2Ux54Np
DevMountain Coding Bootcamp
http://bit.ly/2TGqKJP