prevent matplotlib output in jupyter notebook (python)

Question

I tried to render several hundred images with python and matplotlib using the following code:

def render_state(np_data_array):
    filename = "render/fig_" + str(i) + ".png"

    fig = plt.figure(figsize = (12,12) )
    aa = fig.add_subplot(111)
    aa.imshow(np_data_array,cmap='gray')

    fig.savefig(filename)

unfortunately matplotlib is also rendering everything into the jupyter notebook. Is there a way to prevent any output from matplotlib? I couldn't really find a way and most answers on the internet just say to not use plt.show() what I don't even use

If you don't have to render any plot at all in a notebook, don't call %matplotlib inline? — Manavalan Gajapathy
– Manavalan Gajapathy, Commented Dec 18, 2017 at 17:09
To prevent any output from a jupyter notebook cell, use %%capture as first line of the cell. Is that what you're after? — ImportanceOfBeingErnest
– ImportanceOfBeingErnest, Commented Dec 18, 2017 at 17:09

Tommy · Accepted Answer · 2017-12-18 17:21:53Z

2

%%capture as the first line of the cell works like charm! Thanks to ImportanceOfBeingErnest

answered Dec 18, 2017 at 17:21

Tommy

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1 Comment

Manavalan Gajapathy Over a year ago

It's always a good idea to allow time for the commenter, who provided you with solution, to post it as answer, and then you accept it.

Rustam · Accepted Answer · 2021-09-16 09:43:20Z

0

You can also just use plt.close() at the end of your notebook cell like explained here. This way, you can still render other widgets like a tqdm progress bar. With %%capture, all widgets are blocked.

answered Sep 16, 2021 at 9:43

Rustam

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