old_contents: import uuid
  
  from django import template
  from django.template.loader import render_to_string
  from django.core.urlresolvers import reverse
  
  from .. import Chart
  
  register = template.Library()
  
  
  def render_html(html_id, url):
      context = dict(html_id=html_id, url=url)
      return render_to_string('charting/async/html.html', context)
  
  
  def render_js(html_id, url):
      context = dict(html_id=html_id, url=url)
      return render_to_string('charting/async/js.html', context)
  
  def render_chart_inline(chart, *args, **kwargs):
      return chart.as_html(*args, **kwargs)
  
  def render_chart_async(url_name, *args, **kwargs):
      html_id = 'chart-{}'.format(uuid.uuid4())
      url = reverse(url_name, args=args, kwargs=kwargs)
      context = {
          'html': render_html(html_id, url),
          'js': render_js(html_id, url),
      }
      return render_to_string('charting/chart.html', context)
  
  @register.simple_tag
  def render_chart(chart_or_url_name, *args, **kwargs):
      if isinstance(chart_or_url_name, Chart):
          return render_chart_inline(chart_or_url_name, *args, **kwargs)
      else:
          return render_chart_async(chart_or_url_name, *args, **kwargs)
  
new_contents: import uuid
  
  from django import template
  from django.template.loader import render_to_string
  from django.urls import reverse
  
  from .. import Chart
  
  register = template.Library()
  
  
  def render_html(html_id, url):
      context = dict(html_id=html_id, url=url)
      return render_to_string('charting/async/html.html', context)
  
  
  def render_js(html_id, url):
      context = dict(html_id=html_id, url=url)
      return render_to_string('charting/async/js.html', context)
  
  def render_chart_inline(chart, *args, **kwargs):
      return chart.as_html(*args, **kwargs)
  
  def render_chart_async(url_name, *args, **kwargs):
      html_id = 'chart-{}'.format(uuid.uuid4())
      url = reverse(url_name, args=args, kwargs=kwargs)
      context = {
          'html': render_html(html_id, url),
          'js': render_js(html_id, url),
      }
      return render_to_string('charting/chart.html', context)
  
  @register.simple_tag
  def render_chart(chart_or_url_name, *args, **kwargs):
      if isinstance(chart_or_url_name, Chart):
          return render_chart_inline(chart_or_url_name, *args, **kwargs)
      else:
          return render_chart_async(chart_or_url_name, *args, **kwargs)
  
subject: Fix deprecation notice