class_docstr: The skip optimization removes unnecessary nodes
  from expression tree.
  
  For example:
    The expression `(col_py (append frame_with_100_columns dummy_col dummy_name) 1)` can
    be simplified to `(col_py frame_with_100_columns 1)`
  
  Note: right now this is really specific version only
class_docstr_tok: ["The","skip","optimization","removes","unnecessary","nodes","from","expression","tree",".","For","example",":","The","expression","`","(","col_py","(","append","frame_with_100_columns","dummy_col","dummy_name",")","1",")","`","can","be","simplified","to","`","(","col_py","frame_with_100_columns","1",")","`","Note",":","right","now","this","is","really","specific","version","only"]
code: def __init__(self):
      super(self.__class__, self).__init__(["cols_py"])
  
file_path: h2o-3/h2o-py/h2o/expr_optimizer.py
imports: import h2o.expr
label_desc: Use image node_id 1 to create a new SkipExprOptimization object from inherited base classes: ExprOptimization with example: obj = SkipExprOptimization()