matplotlib: Error in sys.exitfunc

I keep getting error in sys.exitfunc when working with matplotlib. For example, the following code throw it for matplotlib 1.3.0 / Python 2.7.3 / Ubuntu 12.04.3 LTS

from matplotlib.pyplot import figure, show
from numpy.random import random
fh = figure(figsize = (15, 10, ))
ax = fh.add_axes((.1, .1, .8, .8, ))
ax.scatter(random((100, )), random((100, )))
fh.show()

This yields

Error in atexit._run_exitfuncs:
Traceback (most recent call last):
  File "/usr/lib/python2.7/atexit.py", line 24, in _run_exitfuncs
    func(*targs, **kargs)
  File "/usr/local/lib/python2.7/dist-packages/matplotlib/_pylab_helpers.py", line 86, in destroy_all
    manager.destroy()
  File "/usr/local/lib/python2.7/dist-packages/matplotlib/backends/backend_gtk3.py", line 427, in destroy
    self.canvas.destroy()
AttributeError: FigureManagerGTK3Agg instance has no attribute 'canvas'
Error in sys.exitfunc:
Traceback (most recent call last):
  File "/usr/lib/python2.7/atexit.py", line 24, in _run_exitfuncs
    func(*targs, **kargs)
  File "/usr/local/lib/python2.7/dist-packages/matplotlib/_pylab_helpers.py", line 86, in destroy_all
    manager.destroy()
  File "/usr/local/lib/python2.7/dist-packages/matplotlib/backends/backend_gtk3.py", line 427, in destroy
    self.canvas.destroy()
AttributeError: FigureManagerGTK3Agg instance has no attribute 'canvas'

This happens any time the program terminates without show(), including when an unrelated error is raised.

If I use show() instead of fh.show(), I don't get this error. I could just do that, but this error pops up in a lot of places and I prefer to just solve it (and I want to be able to exit without showing a figure).

I tried other backends which either are unavailable, don't have show or give the same error (this is GKT3Agg).

Asked by: Lyndon630 | Posted: 06-12-2021

Answer 1

I had the same error. Using matplotlib.pyplot.close() at the end of my program fixed it. Perhaps this works for you?

Answered by: Arthur230 | Posted: 07-01-2022

Answer 2

plt.plot(return_array, risk_array)
plt.title('Pareto Front for '+ r'$\lambda \in$ [0.0, 1.0]')
plt.xlabel('Return')
plt.ylabel('Risk')
plt.axis([0.02, 0.05, 0.01, 0.016])

only using above code gives error but adding

matplotlib.pyplot.show()

in the end works for me

Answered by: Maddie387 | Posted: 07-01-2022

Answer 3

dowload matplotlib-1.3.1.tar.gz from http://sourceforge.net/projects/matplotlib/files/matplotlib/matplotlib-1.3.1/

cd matplotlib-1.3.1

sudo python setup.py install

before that install following

sudo apt-get install libfreetype6-dev

sudo apt-get install python-dev

sudo apt-get install libevent-dev

sudo apt-get install libpng-dev

Answered by: Caroline310 | Posted: 07-01-2022

Answer 4

I had the same error and the solution of ShikharDua solved the problem for me. My system: ubuntu 13.10 64 bit.

I wanted to run an example code which didn't call the plt.show() function at the end resulting in: AttributeError: FigureManagerGTK3Agg instance has no attribute 'canvas'

Interestingly, the same code, without the plt.show(), worked in ipython if pylab is invoked before.

edit: Ok, i just read, that you mentioned this in your question already. So, this not really a solution for you. However, it is a solution for beginners who were wondering why some example codes don't work.

Answered by: Maddie725 | Posted: 07-01-2022

Answer 5

This is my horrible hack to get around it:

 import matplotlib.pyplot as plt

 # your use of matplotlib here where you don't use the plot.show() function

 try:
   plt.close()
 except AttributeError, e:
   pass

Answered by: David724 | Posted: 07-01-2022

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