code: def visit_children(self, node):
      for child in self.children(node):
          self.visit(child)
  
file_path: turicreate/src/python/turicreate/meta/asttools/visitors/__init__.py
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import _ast
label_desc: Use image node_id 2 for calling a global function with example usage: visit_children(node) without return types