I discovered shapely but I did not find how to calculated the center of gravity of a polygon!
Does someone have the solution?
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Answer
If your polygon has a uniform density, its center of mass coincides with its centroid. In shapely, the centroid can be directly calculated as:
from shapely.geometry import Polygon P = Polygon([[0, 0], [1, 0], [1, 1], [0, 1]]) print(P.centroid) #POINT (0.5 0.5)