Published at LXer:

Maintaining a complex web application that uses a lot of Javascript for client-side, "AJAX"-style interactivity is rather difficult. The clumsiness of the Javascript language itself, as well as the various tricks needed to make an application work consistently across multiple browsers, all of which must be wrapped up inside HTML, makes for a jumble of issues for the application developer. Pyjamas is meant to ease that development, by allowing client-side applications to be written in Python, then translating that code to Javascript for use by the browser.

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