code: def _setdiag_dense(m, d):
      step = len(d) + 1
      m.flat[::step] = d
  
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 2 for calling a global function with example usage: _setdiag_dense(m, d) without return types