Why convert a '.py' file to a '.js' file before running it?

[hcc-sso-edu-tw]

Do you have too much time?

[091cc]

Well, I was designing .py first, but then I wanted to open it without downloading, so I desided to run it in html(website)

[hcc-sso-edu-tw]

There is a typo: "decided" not "desided".
If you want to publish it, you should rewrite it in JavaScript.