System information

• OpenCV => 4.5.1
• Operating System / Platform => Debian 10
• Python
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Detailed description

The documentation of resize states:
dsize output image size; if it equals zero, it is computed as [...]

But actually, in Python, you need dsize=None to reproduce the wanted behaviour.

Steps to reproduce

import numpy as np
img = np.zeros((10,10),dtype=np.uint8)
img = cv2.resize(img, 0, fx=0.25, fy=0.25)

Outputs:

SystemError: new style getargs format but argument is not a tuple

Issue submission checklist

• I report the issue, it's not a question
• I checked the problem with documentation, FAQ, open issues,
  forum.opencv.org, Stack Overflow, etc and have not found solution
• I updated to latest OpenCV version and the issue is still there
• There is reproducer code and related data files: videos, images, onnx, etc