code: def set_atommap(mol, num=0):
      for atom in mol.GetAtoms():
          atom.SetAtomMapNum(num)
  
imports: import rdkit
  import rdkit.Chem
  from scipy.sparse import csr_matrix
  from scipy.sparse.csgraph import minimum_spanning_tree
  from collections import defaultdict
  from rdkit.Chem.EnumerateStereoisomers import EnumerateStereoisomers, StereoEnumerationOptions
  from .vocab import Vocab
label_desc: Use image node_id 1 for calling a global function with example usage: set_atommap(mol, num) without return types