matplotlib.image.imsave TypeError：无法将图像数据转换为float

Question

Simplest fail case:

import matplotlib.image as mpimg
path = 'test_images/input.jpg'
temp = mpimg.imread(path)
mpimg.imsave(temp, 'output.jpg')

I get:

line 1347, in imsave
image.set_data(arr)
File "/Users/chris/anaconda3/lib/python3.5/site-packages/matplotlib/image.py", 
line 600, in set_data
raise TypeError("Image data cannot be converted to float")

I have tested that the file exists (putting the above code in a if os.path.isfile(path): test) and printed the temp.shape which gives me the expected results. Be grateful for any assistance.

Answer 1

I believe there is a mismatch in arguments.

mpimg.imsave(temp, 'output.jpg') instead try,

mpimg.imsave('output.jpg', temp)

Documentation here. imsave