如何将numpy数组转换为（并显示）图像？

您可以使用PIL创建（并显示）图像：

from PIL import Imageimport numpy as npw, h = 512, 512data = np.zeros((h, w, 3), dtype=np.uint8)data[0:256, 0:256] = [255, 0, 0] # red patch in upper leftimg = Image.fromarray(data, 'RGB')img.save('my.png')img.show()