old_contents: __all__ = ['writer']
  
  import docutils.core as dc
  import docutils.writers
  from docutils import nodes
  
  from docutils.writers.latex2e import (Writer, LaTeXTranslator,
                                        PreambleCmds)
  
  class Translator(LaTeXTranslator):
      def __init__(self, *args, **kwargs):
          LaTeXTranslator.__init__(self, *args, **kwargs)
  
      # Handle author declarations
  
      current_field = ''
  
      author_names = []
      author_institutions = []
      author_emails = []
      paper_title = ''
  
      def visit_docinfo(self, node):
          pass
  
      def depart_docinfo(self, node):
          pass
  
      def visit_author(self, node):
          self.author_names.append(self.encode(node.astext()))
          raise nodes.SkipNode
  
      def depart_author(self, node):
          pass
  
      def visit_classifier(self, node):
          pass
  
      def depart_classifier(self, node):
          pass
  
      def visit_field_name(self, node):
          self.current_field = node.astext()
          raise nodes.SkipNode
  
      def visit_field_body(self, node):
          text = self.encode(node.astext())
  
          if self.current_field == 'email':
              self.author_emails.append(text)
          elif self.current_field == 'institution':
              self.author_institutions.append(text)
  
          self.current_field = ''
  
          raise nodes.SkipNode
  
      def depart_field_body(self, node):
          raise nodes.SkipNode
  
      def depart_document(self, node):
          LaTeXTranslator.depart_document(self, node)
  
          doc_title = '\\title{%s}' % self.paper_title
          doc_title += '\\author{%s}' % ', '.join(self.author_names)
          doc_title += '\\maketitle'
  
          self.body_pre_docinfo = [doc_title]
  
      def visit_title(self, node):
          if self.section_level == 1:
              self.paper_title = self.encode(node.astext())
  
          LaTeXTranslator.visit_title(self, node)
  
  writer = Writer()
  writer.translator_class = Translator
  
new_contents: __all__ = ['writer']
  
  import docutils.core as dc
  import docutils.writers
  from docutils import nodes
  
  from docutils.writers.latex2e import (Writer, LaTeXTranslator,
                                        PreambleCmds)
  
  class Translator(LaTeXTranslator):
      def __init__(self, *args, **kwargs):
          LaTeXTranslator.__init__(self, *args, **kwargs)
  
      # Handle author declarations
  
      current_field = ''
  
      author_names = []
      author_institutions = []
      author_emails = []
      paper_title = ''
  
      def visit_docinfo(self, node):
          pass
  
      def depart_docinfo(self, node):
          pass
  
      def visit_author(self, node):
          self.author_names.append(self.encode(node.astext()))
          raise nodes.SkipNode
  
      def depart_author(self, node):
          pass
  
      def visit_classifier(self, node):
          pass
  
      def depart_classifier(self, node):
          pass
  
      def visit_field_name(self, node):
          self.current_field = node.astext()
          raise nodes.SkipNode
  
      def visit_field_body(self, node):
          text = self.encode(node.astext())
  
          if self.current_field == 'email':
              self.author_emails.append(text)
          elif self.current_field == 'institution':
              self.author_institutions.append(text)
  
          self.current_field = ''
  
          raise nodes.SkipNode
  
      def depart_field_body(self, node):
          raise nodes.SkipNode
  
      def depart_document(self, node):
          LaTeXTranslator.depart_document(self, node)
  
          doc_title = '\\title{%s}' % self.paper_title
          doc_title += '\\author{%s}' % ', '.join(self.author_names)
          doc_title += '\\maketitle'
  
          self.body_pre_docinfo = [doc_title]
  
      def visit_title(self, node):
          if self.section_level == 1:
              self.paper_title = self.encode(node.astext())
              raise nodes.SkipNode
  
          LaTeXTranslator.visit_title(self, node)
  
      def visit_paragraph(self, node):
          if 'abstract' in node['classes']:
              self.out.append('\\begin{abstract}')
  
      def depart_paragraph(self, node):
          if 'abstract' in node['classes']:
              self.out.append('\\end{abstract}')
  
  writer = Writer()
  writer.translator_class = Translator
  
subject: Handle abstract.