How to iterate through a list passed to a function parameter with python?

Question

I am trying to use python to draw boxes at a large number of coordinates on an image with opencv and python. I have 2 lists that contain the coordinates of the start and end points of the boxes.

startxy = [(0,0), (1,0), (2,0), ...etc.]  
endxy = [(1,1), (2,1), (3,1), ...etc.]  

cv2.rectangle(img, startxy[0?], endxy[0?], color, thickness)

I know I need to call the rectangle function over and over while I increment the index of my coordinate list, but I'm new to python and struggling with how to increment and pass these values to the rectangle function.

Dan D. · Accepted Answer · 2018-04-19 20:18:28Z

3

Iterate over the the zip of the two lists:

startxy = [(0,0),(1,0),(2,0),...etc.]
endxy = [(1,1),(2,1),(3,1),...etc.]

for start, end in zip(startxy, endxy):
    cv2.rectangle(img, start, end, color, thickness)

answered Apr 19, 2018 at 20:18

Dan D.

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