Python code error invalid geojson

Question

I have a javascript code that worked well , but when convert to python it's doesn't work and raise invalid geojson error . my code in java script is :

var point = ee.Geometry.Point([52.55845586988192,29.853906673142543])
var dataset = ee.Image("KNTU/LiDARLab/IranLandCover/V1")
var collection = dataset.sample({
 region:point,
 geometries: true,
});
print(dataset2.getInfo());

My code in python is :

point = ee.Geometry.Point([52.55845586988192,29.853906673142543])
dataset = ee.Image("KNTU/LiDARLab/IranLandCover/V1")

collection = dataset.sample({'region':point,'geometries': True})
print(dataset.getInfo())