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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug]: AttributeError: 'TimedAnimation' object has no attribute '_framedata'","articleBody":"### Bug summary\n\nHi,\n\nI try to use TimedAnimation class to manage a figure which should plot some sensor data sent in synchronized way, but an AttributeError occurs and I see that in the documentation there is no \"_framedata\" parameter to set.\n\n### Code for reproduction\n\n```Python\n# The code I try to run is this one\n\n# Matplotlib config\nfig, ax = plt.subplots()\nax.grid()\nax.relim() # recompute the ax.dataLim\nax.autoscale_view() # update ax.viewLim using the new dataLim\nline, = ax.plot([], [], lw=2)\n\nxdata, ydata = [0], [0]\ndel xdata[:]\ndel ydata[:]\nline.set_data(xdata, ydata)\n\nt = itertools.count(start=0)\nplt.pause(3)\n\n# The errors occurs after in the TimedAnimation\nani_t = animation.TimedAnimation(fig, interval=10, repeat=True, blit=True)\n\n# This line will be not executed\nplt.show(block=False)\n```\n\n### Actual outcome\n\n```\nTraceback (most recent call last):\n  File \"file.py\", line 337, in \u003cmodule\u003e\n    ani_t = animation.TimedAnimation(fig, interval=10, repeat=True, blit=True)\n            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"venv/lib/python3.12/site-packages/matplotlib/animation.py\", line 1440, in __init__\n    super().__init__(fig, event_source=event_source, *args, **kwargs)\n  File \"venv/lib/python3.12/site-packages/matplotlib/animation.py\", line 892, in __init__\n    self.frame_seq = self.new_frame_seq()\n                     ^^^^^^^^^^^^^^^^^^^^\n  File \"venv/lib/python3.12/site-packages/matplotlib/animation.py\", line 1146, in new_frame_seq\n    return iter(self._framedata)\n                ^^^^^^^^^^^^^^^\nAttributeError: 'TimedAnimation' object has no attribute '_framedata'\nvenv/lib/python3.12/site-packages/matplotlib/animation.py:908: UserWarning: Animation was deleted without rendering anything. This is most likely not intended. To prevent deletion, assign the Animation to a variable, e.g. `anim`, that exists until you output the Animation using `plt.show()` or `anim.save()`.\n```\n\n### Expected outcome\n\nI expect to plot log data each 10 milliseconds\n\n### Additional information\n\n_No response_\n\n### Operating system\n\n_No response_\n\n### Matplotlib Version\n\n3.10.7\n\n### Matplotlib Backend\n\n_No response_\n\n### Python version\n\n_No response_\n\n### Jupyter version\n\n_No response_\n\n### Installation\n\npip","author":{"url":"https://github.com/J0hn3ch","@type":"Person","name":"J0hn3ch"},"datePublished":"2025-12-10T10:49:18.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/30831/matplotlib/issues/30831"}