Hide all warnings in IPython

Question

I need to produce a screencast of an IPython session, and to avoid confusing viewers, I want to disable all warnings emitted by warnings.warn calls from different packages. Is there a way to configure the ipythonrc file to automatically disable all such warnings?

score 1219 · Accepted Answer · edited Nov 22 '22 at 19:26

1219

Place:

import warnings
warnings.filterwarnings('ignore')

inside ~/.ipython/profile_default/startup/disable-warnings.py.

Quite often it is useful to see a warning once. This can be set by:

warnings.filterwarnings(action='once')

edited Nov 22 '22 at 19:26

Peter Mortensen

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answered Jan 27 '12 at 10:23

astrofrog

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Also works for IPython notebook warnings. Nice fix :) – Keith Hughitt Nov 30 '13 at 01:23
7

@FrozenFlame, you change it back to 'default' See: https://docs.python.org/2/library/warnings.html – AZhao Jul 13 '15 at 17:23
48

You can also execute this in the a notebook, in order to suppress only (certain) warnings in one specific notebook – Vasco Nov 11 '15 at 14:13
2

Something odd happens to me, I work on Kaggle notebook, and even if I set `warnings.filterwarnings('ignore')` at the beginning of my script, I get warnings anyway. Should it be related to the fact that I use TPU accelerator, does TPU have a particular behaviour in this case ... I wonder. I do not understand. – Catalina Chircu Mar 05 '20 at 14:51
works like butter! – Anggi Permana Harianja Oct 10 '21 at 05:05
1

Just make sure to invoke at the beginning of the code! – SKPS Jan 17 '22 at 13:41
Same in Google Colab as well. – Elvin Aghammadzada Mar 20 '22 at 04:01
I also have the same problem. Even after including the warnings.filterwarnings('ignore') at the very beginning of the jupyter notebook in its own cell, warnings still get printed in the cell console – Marco May 23 '23 at 13:56

matthiash · Answer 2 · 2017-04-10T14:20:51.147

I hide the warnings in the pink boxes by running the following code in a cell:

from IPython.display import HTML
HTML('''<script>
code_show_err=false; 
function code_toggle_err() {
 if (code_show_err){
 $('div.output_stderr').hide();
 } else {
 $('div.output_stderr').show();
 }
 code_show_err = !code_show_err
} 
$( document ).ready(code_toggle_err);
</script>
To toggle on/off output_stderr, click <a href="javascript:code_toggle_err()">here</a>.''')

score 14 · Answer 3 · edited Nov 22 '22 at 21:31

14

The accepted answer does not work in Jupyter (at least when using some libraries).

The JavaScript solutions here only hide warnings that are already showing but not warnings that would be shown in the future.

To hide/unhide warnings in Jupyter and JupyterLab I wrote the following script that essentially toggles CSS to hide/unhide warnings.

%%javascript
(function(on) {
    const e = $("<a>Setup failed</a>");
    const ns = "js_jupyter_suppress_warnings";
    var cssrules = $("#" + ns);
    if(!cssrules.length)
        cssrules = $("<style id='" + ns + "' type='text/css'>div.output_stderr { } </style>").appendTo("head");
    e.click(function() {
        var s = 'Showing';
        cssrules.empty()
        if(on) {
            s = 'Hiding';
            cssrules.append("div.output_stderr, div[data-mime-type*='.stderr'] { display:none; }");
        }
        e.text(s + ' warnings (click to toggle)');
        on = !on;
    }).click();
    $(element).append(e);
})(true);

edited Nov 22 '22 at 21:31

Peter Mortensen

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answered Jan 22 '20 at 15:41

robert

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I receive the error "Javescript Error: $ is not defined" – Ben Feb 10 '20 at 10:02
1

Doesn't work for me either. I'm getting the same error as Ben (I'm using JupyterLab). – Tobias Bergkvist May 28 '20 at 03:36
It worked for me both in Jupyter and in JupyterLab. there may be some problem with your installation. – Reza Keshavarz Nov 13 '21 at 06:07
Works for me, but this also removes any other output generated in the cell. – Akhil prasannan Feb 02 '22 at 14:28
Just look at the officially selected answer using `warnings`. This is unlikely to work. – Aleksandar Savkov Apr 09 '23 at 06:50

score 5 · Answer 4 · edited Nov 22 '22 at 19:28

For JupyterLab, this should work (@Alasja):

from IPython.display import HTML

HTML('''<script>
var code_show_err = false;
var code_toggle_err = function() {
    var stderrNodes = document.querySelectorAll('[data-mime-type="application/vnd.jupyter.stderr"]')
    var stderr = Array.from(stderrNodes)
    if (code_show_err){
        stderr.forEach(ele => ele.style.display = 'block');
    } else {
        stderr.forEach(ele => ele.style.display = 'none');
    }
    code_show_err = !code_show_err
}
document.addEventListener('DOMContentLoaded', code_toggle_err);
</script>
To toggle on/off output_stderr, click <a onclick="javascript:code_toggle_err()">here</a>.''')

score 0 · Answer 5 · answered Jul 22 '23 at 05:59

0

you need to specify the category otherwise even with the top solution above you'd get warnings

   warnings.filterwarnings("ignore", category=DeprecationWarning)

answered Jul 22 '23 at 05:59

najmieh sadat safarabadi

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Hide all warnings in IPython

5 Answers5

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