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260416，2509165013/hw1.py

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