code: def _collect_all_ops(e):
      return (
          sum(
              [
                  _collect_all_ops(c)
                  for c in e.args()
                  if isinstance(c, ExprNode)
              ],
              [e._op],
          )
          if e.args()
          else [e._op]
      )
  
file_path: h2o-3/h2o-py/tests/testdir_misc/pyunit_expr_optimizations.py
imports: import h2o
  import sys
  from tests import pyunit_utils
  from h2o import H2OFrame
  from h2o.expr import ExprNode
label_desc: Use image node_id 10 for calling a global function with example usage: _collect_all_ops(e) and returns: unknown