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rsokl opened this issue Sep 2, 2020 · 6 comments
Closed

%matplotlib notebook magic no longer shows plots #18396

rsokl opened this issue Sep 2, 2020 · 6 comments
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GUI: nbagg status: duplicate

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@rsokl
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rsokl commented Sep 2, 2020

Bug report

Bug summary

In Firefox (haven't tested other browsers), the %matplotlib notebook magic causes plots to not render.

Changing to %matplotlib inline will produce the plot

Code for reproduction

import matplotlib.pyplot as plt
%matplotlib notebook

fig, ax = plt.subplots()
ax.plot(range(10))

Actual outcome

image

Expected outcome

I expect a plot to be produced by the above code, instead of that weird charm that it displayed

Matplotlib version

  • Operating system: Ubuntu 18.04.4
  • Matplotlib version: 3.3.1
  • Matplotlib backend (print(matplotlib.get_backend())): nbAgg
  • Python version: 3.7.9
  • Jupyter version (if applicable):
  • Other libraries:
ipykernel                 5.3.4            py37h5ca1d4c_0
ipython                   7.18.1           py37h5ca1d4c_0
jupyter_client            6.1.6                      py_0
jupyter_core              4.6.3                    py37_0

Installed from conda, default channel.
@QuLogic
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QuLogic commented Sep 2, 2020

What version of Firefox?

@ianhi
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ianhi commented Sep 3, 2020

@rsokl have you tried flipping the order of the first two lines?
when I run your example I get a blank plot:
image

with this error in the console:

Exception inside the 'handler_close' callback: TypeError: this is undefined
    handle_close http://localhost:8889/static/notebook/js/main.min.js?v=f71d682290e3b718d369f11ba1d1aef1 line 35520 > eval:727
    socket_on_message http://localhost:8889/static/notebook/js/main.min.js?v=f71d682290e3b718d369f11ba1d1aef1 line 35520 > eval:542
    comm_websocket_adapter http://localhost:8889/static/notebook/js/main.min.js?v=f71d682290e3b718d369f11ba1d1aef1 line 35520 > eval:692
    _callback http://localhost:8889/static/notebook/js/main.min.js?v=f71d682290e3b718d369f11ba1d1aef1:37260
    handle_msg http://localhost:8889/static/notebook/js/main.min.js?v=f71d682290e3b718d369f11ba1d1aef1:37268
    CommManager.prototype.comm_msg/this.comms[content.comm_id]< http://localhost:8889/static/notebook/js/main.min.js?v=f71d682290e3b718d369f11ba1d1aef1:37198
 mpl.figure.prototype.handle_close@http://localhost:8889/static/notebook/js/main.min.js?v=f71d682290e3b718d369f11ba1d1aef1 line 35520 > eval:727:5
socket_on_message@http://localhost:8889/static/notebook/js/main.min.js?v=f71d682290e3b718d369f11ba1d1aef1 line 35520 > eval:542:25
comm_websocket_adapter/<@http://localhost:8889/static/notebook/js/main.min.js?v=f71d682290e3b718d369f11ba1d1aef1 line 35520 > eval:692:12
Comm.prototype._callback@http://localhost:8889/static/notebook/js/main.min.js?v=f71d682290e3b718d369f11ba1d1aef1:37260:24
Comm.prototype.handle_msg@http://localhost:8889/static/notebook/js/main.min.js?v=f71d682290e3b718d369f11ba1d1aef1:37268:21
CommManager.prototype.comm_msg/this.comms[content.comm_id]<@http://localhost:8889/static/notebook/js/main.min.js?v=f71d682290e3b718d369f11ba1d1aef1:37198:42

also subsequent plots are embedded without interactivity
image

However if I swap the order of the first two lines

%matplotlib notebook
import matplotlib.pyplot as plt

fig, ax = plt.subplots()
ax.plot(range(10))

then everything works as expected.

OS: PopOS 20.04 (basically ubuntu)
Browser: Firefox 78.0.1
matplotlib version: 3.3.1
python: '3.7.8 | packaged by conda-forge | (default, Jul 31 2020, 02:25:08) \n[GCC 7.5.0]'

@ianhi
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ianhi commented Sep 3, 2020

Also, I just checked and I see the same behavior on Chrome 83.0.4103.116 (Official Build) (64-bit)

@rsokl
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rsokl commented Sep 3, 2020 •
edited
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Firefox Quantum 68.11.0esr (64-bit)

@ianhi unfortunately, neither of those behaviors manifest for me. These sorts of plots worked for my prior to an environment upgrade - I need to find time to do some version bisecting to find the culprit.

image

a-n-rose added a commit to a-n-rose/Python-Sound-Tool that referenced this issue Sep 21, 2020
@a-n-rose
added 'sub_process' = True to plotting for within Jupyter notebooks -…
4f6606a 
… otherwise not showing :( Some bug: matplotlib/matplotlib#18396
@QuLogic
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QuLogic commented Sep 23, 2020

Firefox Quantum 68.11.0esr (64-bit)

Ah, this is the same as #18481. See the workaround in #18481 (comment)

@jklymak
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jklymak commented Sep 23, 2020

I don't think there is any reason for both issues to be open?

@jklymak jklymak closed this as completed Sep 23, 2020
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@QuLogic @jklymak @ianhi @rsokl