René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug]: set_edgecolor(None) cannot recover the default style after changing the edge color of wedges with hatches","articleBody":"### Bug summary\n\nThis bug occurs when I create a pie chart with hatches, then specify the edge color to red, and reset it to `None` to recover the default style. However, the actual result displays red hatches.\n\n### Code for reproduction\n\n```Python\nimport matplotlib.pyplot as plt\n\nlabels = 'Frogs', 'Hogs', 'Dogs', 'Logs'\nsizes = [15, 30, 45, 10]\n\nfig, ax = plt.subplots()\nwedges, texts = ax.pie(sizes, labels=labels, hatch=['**O', 'oO', 'O.O', '.||.'])\nfor wedge in wedges: wedge.set_edgecolor(None)\nplt.savefig('plot1.png')\nfor wedge in wedges: wedge.set_edgecolor('r')\nfor wedge in wedges: wedge.set_edgecolor(None)\nplt.savefig('plot2.png')\n```\n\n### Actual outcome\n\n#### plot1.png\n\n\u003cimg width=\"640\" height=\"480\" alt=\"Image\" src=\"https://github.com/user-attachments/assets/08c3f8da-490b-4965-8a2d-6f3f62c8d0bc\" /\u003e\n\n#### plot2.png\n\n\u003cimg width=\"640\" height=\"480\" alt=\"Image\" src=\"https://github.com/user-attachments/assets/ec340857-d0f3-4835-a6b3-09b50fe7bc1d\" /\u003e\n\n### Expected outcome\n\n#### plot1.png\n\n\u003cimg width=\"640\" height=\"480\" alt=\"Image\" src=\"https://github.com/user-attachments/assets/456803c0-c5b7-408f-99cb-9b78b91b30d7\" /\u003e\n\n#### plot2.png\n\n\u003cimg width=\"640\" height=\"480\" alt=\"Image\" src=\"https://github.com/user-attachments/assets/f42c5d8d-23ba-4af8-9dc2-4cfac28aa5fb\" /\u003e\n\n### Additional information\n\n_No response_\n\n### Operating system\n\n_No response_\n\n### Matplotlib Version\n\n3.10.8\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\nNone","author":{"url":"https://github.com/williamlus","@type":"Person","name":"williamlus"},"datePublished":"2026-03-02T13:23:46.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/31225/matplotlib/issues/31225"}