VPython is an easy-to-use, powerful environment for creating 3D animations. Here at glowscript.org (or webvpython.org, which takes you here), you can write and run VPython programs right in your browser, store them in the cloud for free, and easily share them with others. You can also use VPython with installed Python: see vpython.org.
To use webvpython.org you will need to choose a unique name for yourself. This name will be visible to other internet users and will be part of the URLs you can use to share programs. You can use your own name or a pseudonym, but please try not to offend others.
Program does not start with the required version declaration: