code: def sum_edges(graph, feat, weight=None, *, etype=None):
      """Syntax sugar for ``dgl.readout_edges(graph, feat, weight, etype=etype, op='sum')``.
  
      See Also
      --------
      readout_edges
      """
      return readout_edges(graph, feat, weight, etype=etype, op="sum")
  
file_path: dgl/python/dgl/readout.py
imports: from __future__ import absolute_import
  from .None import backend
  from .base import dgl_warning, DGLError
  from .ops import segment
label_desc: Use image node_id 4 for calling a global function with example usage: sum_edges(graph, feat, weight) and returns: readout_edges