Python Geopandas-计算x、y对数的简单方法

我有一个geopandas数据帧：

import geopandas as gp
shp = gp.GeoDataFrame.from_file('example_file.shp')
shp.head(1)

SHAPE_LEN, SHAPE_AREA, geometry
21685      1.400       POLYGON ((-94.56994242128158 39.0135784915016, -94.56996218461458 39.01306817553366, -94.57042915800061 39.0130911485529, -94.57226806507019 39.01315884549675, -94.57342610723566 39.0132037014107, -94.57455413213843 39.01325045956409, -94.5744687494557 39.0149606326803, -94.57438658848373 39.01662549877073, -94.57429668454471 39.01829429564054, -94.57420188567131 39.01996471505225, -94.57409920172726 39.02177363299919, -94.57399716984756 39.02357145717905, -94.57389471998749 39.02537842422011, -94.57379374134878 39.02718338530785, -94.5736922385682 39.02899696762881, -94.57358427357126 39.03083007540815, -94.57347404106743 39.03265453494053, -94.5733651179229 39.03445691515196))

是否有一种简单的方法来获取“几何体”字段中x，y坐标对的数量？使用len这样简单的操作会引发以下错误：

print (len(shp.geometry.iloc[0])) throws the following error:

TypeError: object of type 'Polygon' has no len()

是否需要转换“几何体”列的类型

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要获得x，y坐标对的数量，非常感谢任何帮助

：

import geopandas as gp

shp = gp.GeoDataFrame.from_file('example_file.shp') 

def get_coord(coord):
  return (coord.x, coord.y)

centroidseries = shp['geometry'].centroid
xycoords = map(get_coord, centroidseries)

或者，如果需要两个单独的x和y坐标列表：

x,y = [list(t) for t in zip(*map(get_coord, centroidseries))]