GEOSGeometry 到底是什么

Question

Sorry it may be absurde but I got confused. I have seen two ways of creating a Polygon.

from django.contrib.gis.geos import GEOSGeometry, LineString, Polygon
1- geometry = GEOSGeometry(Polygon(coordinates, srid=4326))
2- geometry = Polygon(coordinates, srid=4326)

Why is it important to add GEOSGeometry instead of just using the 2) ?

Answer 1

It seems, that GEOSGeometry() can format text and JSON (etc. compatible formats) in to spesific objects, like Point(), or Polygon().

So you don't need to use GEOSGeometry(), if you can do without. These two definitions are equal (as far I understand). source

from django.contrib.gis.geos import GEOSGeometry, Point
pnt = Point(954158.1, 4215137.1, srid=32140)
pnt = GEOSGeometry('SRID=32140;POINT(954158.1 4215137.1)')