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Error running the animation/random_walk.py example #13778

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daguito81 opened this issue Mar 28, 2019 · 5 comments
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Error running the animation/random_walk.py example #13778

daguito81 opened this issue Mar 28, 2019 · 5 comments
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Documentation topic: animation

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@daguito81
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Bug report

Bug summary

When running the random_walk.py example, python throws an error

Code for reproduction
This appears by running random_walk.py as is

Actual outcome

AttributeError stating that the generated ax has no plot attribute

Traceback (most recent call last):
  File "random_walk.py", line 52, in <module>
    lines = [ax.plot(dat[0, 0:1], dat[1, 0:1], dat[2, 0:1])[0] for dat in data]
  File "random_walk.py", line 52, in <listcomp>
    lines = [ax.plot(dat[0, 0:1], dat[1, 0:1], dat[2, 0:1])[0] for dat in data]
AttributeError: 'NoneType' object has no attribute 'plot'

Matplotlib version

  • Operating system: Windows 10 Pro Version 1803
  • Matplotlib version: 2.2.3
  • Matplotlib backend (print(matplotlib.get_backend())): Qt5Agg
  • Python version: 3.6.6
  • Jupyter version (if applicable): N/A
  • Other libraries: N/A
@daguito81
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daguito81 commented Mar 28, 2019 •
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I posted the bug for documentation purposes but I'd like to take a crack at it

daguito81 added a commit to daguito81/matplotlib that referenced this issue Mar 28, 2019
@daguito81
fixed bug in matplotlib#13778, created description matplotlib#8921
cf7ba1a
@daguito81 daguito81 mentioned this issue Mar 28, 2019
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@anntzer
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anntzer commented Mar 28, 2019

The example must be run with matplotlib master, not 2.2.3 (with 2.2.3, you need to run an older version of the example).

@daguito81
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Thank you for your comment. I tested it with master and indeed it works. Sorry about that

@anntzer
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anntzer commented Mar 28, 2019

No worries. Good to close?

@daguito81
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daguito81 commented Mar 28, 2019 via email

@anntzer anntzer closed this as completed Mar 28, 2019
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@anntzer @daguito81