Pasting the following piece of code in the console allows formatted output.

import js

class Test2:
  def __init__(self):
    return
  def __repr__(self):
    return "Test-Object"
  def __repr_html__(self):
    return "<div style=\"color:red; background-color: white\">Test-Object</div>"



def formatted_displayhook(x):
  if '__repr_html__' in dir(x):
    js.globals.jqconsole.Write(x.__repr_html__(), "", 0)
    print("")
    return
  print(x)
  print("")



t = Test2()
print("With old output")
t

import sys
sys.displayhook = formatted_displayhook
print("With new hook")
t

Thanks @TobiG, this is pretty neat! Are you interested in working on this yourself? I'd be happy to provide a few pointers as to how it could fit into the existing code and API.

On 05/30/2016 03:12 AM, Ryan Kelly wrote:

Thanks @TobiG https://github.com/tobig, this is pretty neat! Are you
interested in working on this yourself? I'd be happy to provide a few
pointers as to how it could fit into the existing code and API.

No promises, unfortunately. However, if you could point out how you
imagine this to work I might give it a shot at some quiet moment.

Tobias

I've been trying to think of a good way to incorporate this. The code for making an interactive shell with jqconsole lives in a separate repo here:

https://github.com/pypyjs/pypyjs.github.io/blob/master/index.html

So one option could be to just have that code execute something like your displayhook setup as part of its initialization procedure. But that's not very re-usable.

A more general solution might add support for this into the underlying pypyjs.repl method, e.g. by adding a second "displayhook" argument. But I'm not sure how to make that nice as an API.

What about doing the following:

1. Allowing to (optionall) set vm.stdout_html, which by default aliases vm.stdout, but can be set to a
   special display function (e.g., the raw output function we used above).
   We could make this functionality available from the python side. I am unsure what the right interface
   would be here?

2. Add a convenience function to 'vm' that loads a formatted display_hook as presented above and uses
   this HTML output interface of 1). As a result, we can just set these two options in index.html and
   editor.html and both should benefit from optional HTML output.