code: def render_latex_template(path_templates, template_filename,
          template_vars=None):
      '''Render a latex template, filling in its template variables
  
      :param path_templates: the path to the template directory
      :param template_filename: the name, rooted at the path_template_directory,
          of the desired template for rendering
      :param template_vars: dictionary of key:val for jinja2 variables
          defaults to None for case when no values need to be passed
      '''
      var_dict = template_vars if template_vars else {}
      var_dict_escape = recursive_apply(var_dict, escape_latex_str_if_str)
      j2_env = jinja2.Environment(
              loader=jinja2.FileSystemLoader(path_templates), **J2_ARGS
              )
      template = j2_env.get_template(template_filename)
      return template.render(**var_dict_escapef render_latex_template(path_templates, template_filename,
          template_vars=None):
      '''Render a latex template, filling in its template variables
  
      :param path_templates: the path to the template directory
      :param template_filename: the name, rooted at the path_template_directory,
          of the desired template for rendering
      :param template_vars: dictionary of key:val for jinja2 variables
          defaults to None for case when no values need to be passed
      '''
      var_dict = template_vars if template_vars else {}
      var_dict_escape = recursive_apply(var_dict, escape_latex_str_if_str)
      j2_env = jinja2.Environment(
              loader=jinja2.FileSystemLoader(path_templates), **J2_ARGS
              )
      template = j2_env.get_template(template_filename)
      return template.render(**var_dict_escape)
docs: Render a latex template, filling in its template variables
  
      :param path_templates: the path to the template directory
      :param template_filename: the name, rooted at the path_template_directory,
          of the desired template for rendering
      :param template_vars: dictionary of key:val for jinja2 variables
          defaults to None for case when no values need to be passed