How to get the list of QgsPoint from a polygon Layer in pyqgis

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I have a tittle problem with how to manage the points in a layer.

from qgis.core import *def run_script(iface): layer = QgsVectorLayer(layerType.Polygon+'?'+crs.psg_4326, 'la-florida', vectorLayerType.memory)In this moment I need to get all vertex from the polygon which represent the region bound.



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