code: def test_get_atom_formal_charge(self):
      atoms = self.mol.GetAtoms()
      assert atoms[0].GetSymbol() == "C"
      formal_charge = get_atom_formal_charge(atoms[0])
      assert formal_charge == [0.0]
  
imports: import unittest
  from deepchem.utils.molecule_feature_utils import one_hot_encode
  from deepchem.utils.molecule_feature_utils import get_atom_type_one_hot
  from deepchem.utils.molecule_feature_utils import construct_hydrogen_bonding_info
  from deepchem.utils.molecule_feature_utils import get_atom_hydrogen_bonding_one_hot
  from deepchem.utils.molecule_feature_utils import get_atom_hybridization_one_hot
  from deepchem.utils.molecule_feature_utils import get_atom_total_num_Hs_one_hot
  from deepchem.utils.molecule_feature_utils import get_atom_is_in_aromatic_one_hot
  from deepchem.utils.molecule_feature_utils import get_atom_chirality_one_hot
  from deepchem.utils.molecule_feature_utils import get_atom_formal_charge
  from deepchem.utils.molecule_feature_utils import get_atom_formal_charge_one_hot
  from deepchem.utils.molecule_feature_utils import get_atom_partial_charge
  from deepchem.utils.molecule_feature_utils import get_atom_total_degree_one_hot
  from deepchem.utils.molecule_feature_utils import get_atom_implicit_valence_one_hot
  from deepchem.utils.molecule_feature_utils import get_atom_explicit_valence_one_hot
  from deepchem.utils.molecule_feature_utils import get_bond_type_one_hot
  from deepchem.utils.molecule_feature_utils import get_bond_is_in_same_ring_one_hot
  from deepchem.utils.molecule_feature_utils import get_bond_is_conjugated_one_hot
  from deepchem.utils.molecule_feature_utils import get_bond_stereo_one_hot
  from deepchem.utils.molecule_feature_utils import get_bond_graph_distance_one_hot
label_desc: Use image node_id 10 for calling the TestGraphConvUtils obj's underlying member method code with example usage: obj.test_get_atom_formal_charge() without return types