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import urllib import cv2 import numpy as np

def index():

    url = "a url"

    url_response = urllib.urlopen(url)

    img_array = np.array(bytearray(url_response.read()), dtype=np.uint8)

    img = cv2.imdecode(img_array, -1)

    cv2.imwrite("=========test.jpeg", img)

    cv2.waitKey()

    return 1

After running this code, my "=========test.jpeg" is a blank file. What's wrong with my code?

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