new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  
  from collections import OrderedDict
  import string
  import re
  
  
  def I(s):
      # Return s unchanged
      return s
  
  
  def camelize(s):
      # Change "Foo bar baz's" to "FooBarBazs"
      return re.sub(r'\W', '', string.capwords(s))
  
  
  def underscore(s):
      # Change "Foo bar baz's" to "foo_bar_bazs"
      underscored = re.sub(r'\s+', '_', s.strip().downcase())
      return re.sub(r'\W', '', underscored)
  
  
  class Renderer(object):
      def __init__(self, key_formatter=I):
          self.key_formatter = key_formatter
          super(Renderer, self).__init__()
  
      def stringify_dict(self, d):
          out = OrderedDict(
              [
                  (self.key_formatter(self._render_block(k)), self._valuify(v))
                  for k, v in d.items()
              ])
          return out
  
      def _valuify(self, cm_vals):
          if hasattr(cm_vals, 'items'):
              return self.stringify_dict(cm_vals)
          if len(cm_vals) == 0:
              return ''
          first = cm_vals[0]
          if first.t == 'List':
              return self._render_List(first)
          return "\n\n".join([self._render_block(v) for v in cm_vals])
  
      def _render_block(self, block):
          method_name = "_render_{0}".format(block.t)
          method = self._render_generic_block
          if hasattr(self, method_name):
              method = getattr(self, method_name)
          return method(block)
  
      def _render_generic_block(self, block):
          if hasattr(block, 'strings') and len(block.strings) > 0:
              return "\n".join(block.strings)
          if len(block.children) > 0:
              return [self._render_block(b) for b in block.children]
  
      def _render_List(self, block):
          return [self._render_block(li) for li in block.children]
  
      def _render_FencedCode(self, block):
          return "```\n" + block.string_content + "```"
  
subject: Add dict_renderer