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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _render_dataframe(dataframe):
 """Helper to render a dataframe as an HTML table."""

  data = dataframe.to_dict(orient='records')
  fields = dataframe.columns.tolist()
  return IPython.core.display.HTML(
      datalab.utils.commands.HtmlBuilder.render_table(data, fields))