René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Type Error when saving jpg image (Pillow 3)","articleBody":"### Bug report\r\n\r\n**Bug summary**\r\n\r\nSaving a jpg file via `plt.savefig(\"plot.jpg\")` fails with a type error in matplotlib 2.2.0rc1. Did the required pillow version change? The docs say it's 2.0 or higher.\r\n\r\n**Code for reproduction**\r\n\r\n```\r\nimport matplotlib\r\nmatplotlib.use(\"Agg\")\r\nimport matplotlib.pyplot as plt\r\n\r\nplt.plot([1,3,1])\r\nplt.savefig(\"plot.jpg\")\r\n```\r\n\r\n**Actual outcome**\r\n\r\n\r\n```\r\nTraceback (most recent call last):\r\n  File \"D:\\*******\\GI_savefigjpg.py\", line 16, in \u003cmodule\u003e\r\n    plt.savefig(\"plot.jpg\")\r\n  File \"c:\\******\\python-2.7.10.amd64\\lib\\site-packages\\matplotlib\\pyplot.py\", line 710, in savefig\r\n    res = fig.savefig(*args, **kwargs)\r\n  File \"c:\\******\\python-2.7.10.amd64\\lib\\site-packages\\matplotlib\\figure.py\", line 2033, in savefig\r\n    self.canvas.print_figure(fname, **kwargs)\r\n  File \"c:\\******\\python-2.7.10.amd64\\lib\\site-packages\\matplotlib\\backend_bases.py\", line 2261, in print_figure\r\n    **kwargs)\r\n  File \"c:\\******\\python-2.7.10.amd64\\lib\\site-packages\\matplotlib\\backends\\backend_agg.py\", line 582, in print_jpg\r\n    return background.save(filename_or_obj, format='jpeg', **options)\r\n  File \"c:\\******\\python-2.7.10.amd64\\lib\\site-packages\\PIL\\Image.py\", line 1665, in save\r\n    save_handler(self, fp, filename)\r\n  File \"c:\\******\\python-2.7.10.amd64\\lib\\site-packages\\PIL\\JpegImagePlugin.py\", line 691, in _save\r\n    ImageFile._save(im, fp, [(\"jpeg\", (0, 0)+im.size, 0, rawmode)], bufsize)\r\n  File \"c:\\******\\python-2.7.10.amd64\\lib\\site-packages\\PIL\\ImageFile.py\", line 484, in _save\r\n    e = Image._getencoder(im.mode, e, a, im.encoderconfig)\r\n  File \"c:\\******\\python-2.7.10.amd64\\lib\\site-packages\\PIL\\Image.py\", line 430, in _getencoder\r\n    return encoder(mode, *args + extra)\r\nTypeError: integer argument expected, got float\r\n\r\n```\r\n\r\n**Expected outcome**\r\n\r\nNo error should occur.\r\n\r\n**Matplotlib version**\r\n  * Operating system: **Windows 8.1**\r\n  * Matplotlib version: **2.2.0rc1**\r\n  * Matplotlib backend: **Agg**, also tested with `%matplotlib inline`\r\n  * Python version: **2.7.10**\r\n  * Other libraries:\r\n    ```\r\n    import PIL\r\n    print PIL.VERSION          # prints 1.1.7\r\n    print PIL.PILLOW_VERSION   # prints 3.0.0\r\n    ```\r\n\u003c!--Please tell us how you installed matplotlib and python e.g., from source, pip, conda--\u003e\r\n\u003c!--If you installed from conda, please specify which channel you used if not the default--\u003e\r\n\r\n","author":{"url":"https://github.com/ImportanceOfBeingErnest","@type":"Person","name":"ImportanceOfBeingErnest"},"datePublished":"2018-02-28T22:53:58.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":11},"url":"https://github.com/10633/matplotlib/issues/10633"}