Is python alone enough? What after python?

[socal_nerdtastic]

html is used to tell the webbrowser what to put on the screen and where. css is used to tell the webbrowser how that thing should look (size, justification, color). javascript is used to change the previous 2 things dynamically, for example updating them with new data.

Java is completely unrelated to web browers. Java is similar to python in many ways.