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aebrahim / IProgress

Fork of http://code.google.com/p/python-progressbar/ with IPython notebook support
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Does not work with qtconsole #1

Open aebrahim opened 9 years ago

aebrahim commented 9 years ago

As of 309209e, this does not work with qtconsole.

The issue is that there is no way to differentiate between the notebook (which can display a widget), and the qt console (which can not). When the notebook is detected, only a widget is displayed, and the text output is suppressed.

gaulinmp commented 8 years ago

I had this problem too, and solved it using display_javascript. While I haven't gotten it working for IProgress (because checking is all done at import time in progressbar.py file), I do have it working for gaulinmp/tqdm.

Basically in the import preamble of the module, I put the following:

display.display_javascript("""IPython.notebook.kernel.execute(
                           'from IPython import get_ipython;
                           get_ipython().has_js=True');""", raw=True)

Then I have a simple check function which is run whenever I want to know if I'm in a notebook:

ip = IPython.get_ipython()
...
def _has_js():
    return hasattr(ip, 'has_js')

Because the get_ipython() object is global (seems to be in testing at least, I'm ignorant here on the specifics), the _has_js call will find the has_js object only if javascript is present, which is only the case when running a notebook. I don't know if this is always true though, so YMMV.

I didn't get it running for IProgress, but I think that's because the progressbar.py file checks for IPython at import time, not when the progress bar object is created. That's why I defer the check to decide which type of progress bar to create in my fork of tqdm linked above. I did copy the rest of your import code though, thanks for that!