code: def __repr__(self):
      if hasattr(self, "node"):
          return "Uninitialized decision tree."
  
      out = ""
      out += "Python decision tree"
      out += "\n"
      out += "\nNumber of examples          : %s" % self.num_examples
      out += "\nNumber of feature columns   : %s" % self.num_features
      out += (
          "\nNumber of unpacked features : %s"
          % self.num_unpacked_features
      )
      out += "\n"
      out += "\nMaximum tree depth          : %s" % self.max_depth
      out += "\nNumber of nodes             : %s" % self.num_nodes
      return out
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  from turicreate.util import _raise_error_if_not_of_type
  from turicreate.toolkits._internal_utils import _numeric_param_check_range
  import sys
label_desc: Use image node_id 3 for calling the DecisionTree obj's underlying member method code with example usage: obj.__repr__() and returns: out, str