code: def _laplace(m, d):
      return lambda v: v * d[:, np.newaxis] - m @ v
  
file_path: scikit-learn/sklearn/externals/_scipy/sparse/csgraph/_laplacian.py
imports: import numpy
  from scipy.sparse import issparse
  from scipy.sparse.linalg import LinearOperator
label_desc: Use image node_id 3 for calling a global function with example usage: _laplace(m, d) and returns: function