python读取图片获得的不同长度

from PIL import Image
import cv2
from skimage import io

def shape_size():
    img = cv2.imread('img_part.jpg')
    print(img.shape)  # h, w, c
    img1 = Image.open('img_part.jpg')
    print(img1.size)  # w, h
    img2 = io.imread('img_part.jpg')
    print(img2.shape)  # h, w, c


if __name__ == '__main__':
    shape_size()

(50, 1248, 3)
(1248, 50)
(50, 1248, 3)