def overwrite():
    import numpy as np
    img = np.zeros([100, 100, 3], dtype=np.uint8)
    img.fill(255)
    imwrite('static/plots/plot.png', img)
def overwrite():
    import numpy as np
    img = np.zeros([100, 100, 3], dtype=np.uint8)
    img.fill(255)
    imwrite('static/plots/plot.png', img)