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zxy.py

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+import numpy as np
+
+image = np.array([
+    [100, 150, 200],
+    [80, 120, 180],
+    [60, 90, 140]
+], dtype=np.uint8)
+
+print("原图：")
+print(image)
+
+image_dark = (image.astype(np.int16) - 20).clip(0, 255).astype(np.uint8)
+print("\n变暗20后：")
+print(image_dark)
+
+image_crop = image[0:2, 0:2]
+print("\n裁剪左上角后：")
+print(image_crop)
+
+image_flip = np.fliplr(image)
+print("\n水平翻转后：")
+print(image_flip)