first of all I want to thank you for your work!
Today I've tried to start the Python course and I want to signal a problem I found.
The first lesson seems not to work properly: the initial spinning circle loading animation doesn't stop and the page doesn't seem to complete its loading.
I'm unable to click on the "Save & Submit Code" button.
I've used two different browser:
* Firefox 43.0.4
* Google Chrome 49.0.2623.112
My machine is a MacBook (13 inches, late 2008) 2.1GHz Intel Core 2 Duo
Thank you very much for your support
Replace this line with your code.