text: """Functions to load demo data."""
  
  import os
  
  import pandas as pd
  
  _DATA_PATH = os.path.join(os.path.dirname(__file__), 'data')
  
  
  def load_demo():
      """Load the demo DataFrame."""
      return pd.read_csv(os.path.join(_DATA_PATH, 'demo.csv'), parse_dates=['date'])
  