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, Dec 18 '17 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, Dec 18 '17 at 17:09
Possible duplicate of [matplotlib python inline on/off](https://stackoverflow.com/questions/30878666/matplotlib-python-inline-on-off) — georgexsh, Dec 18 '17 at 17:09

score 1 · Answer 1 · answered Dec 18 '17 at 17:21

1

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

answered Dec 18 '17 at 17:21

Tommy

111
6

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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. – Manavalan Gajapathy Dec 18 '17 at 17:33

score 0 · Answer 2 · answered Sep 16 '21 at 09:43

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 '21 at 09:43

Ray Walker

285
3
5

prevent matplotlib output in jupyter notebook (python)

2 Answers2