code: def estimators(request):
      space = request.param
      request.cls.estimator = TangentPCA(space)
  
file_path: geomstats/tests/tests_geomstats/test_learning/test_pca.py
imports: import pytest
  from geomstats.geometry.spd_matrices import SPDMatrices
  from geomstats.geometry.special_euclidean import SpecialEuclidean
  from geomstats.geometry.special_orthogonal import SpecialOrthogonal
  from geomstats.learning.pca import TangentPCA
  from geomstats.test.parametrizers import DataBasedParametrizer
  from geomstats.test.test_case import np_and_autograd_only
  from geomstats.test_cases.learning.pca import TangentPCATestCase
  from .data.pca import TangentPCATestData
label_desc: Use image node_id 1 for calling a global function with example usage: estimators(request) without return types