matplotlib & pandas

Python/matplotlab/gallery/misc/image_thumbnail_sgskip.md

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+# 图像缩略图
+
+您可以使用matplotlib从现有图像生成缩略图。matplotlib本身支持输入端的PNG文件，如果安装了PIL，则透明地支持其他图像类型。
+
+```python
+# build thumbnails of all images in a directory
+import sys
+import os
+import glob
+import matplotlib.image as image
+
+
+if len(sys.argv) != 2:
+    print('Usage: python %s IMAGEDIR' % __file__)
+    raise SystemExit
+indir = sys.argv[1]
+if not os.path.isdir(indir):
+    print('Could not find input directory "%s"' % indir)
+    raise SystemExit
+
+outdir = 'thumbs'
+if not os.path.exists(outdir):
+    os.makedirs(outdir)
+
+for fname in glob.glob(os.path.join(indir, '*.png')):
+    basedir, basename = os.path.split(fname)
+    outfile = os.path.join(outdir, basename)
+    fig = image.thumbnail(fname, outfile, scale=0.15)
+    print('saved thumbnail of %s to %s' % (fname, outfile))
+```
+
+## 下载这个示例
+            
+- [下载python源码: image_thumbnail_sgskip.py](https://matplotlib.org/_downloads/image_thumbnail_sgskip.py)
+- [下载Jupyter notebook: image_thumbnail_sgskip.ipynb](https://matplotlib.org/_downloads/image_thumbnail_sgskip.ipynb)