old_contents: import os
  from urllib.request import urlretrieve
  
  import pandas as pd
  
  FREMONT_URL = 'https://data.seattle.gov/api/views/65db-xm6k/rows.csv?accessType=DOWNLOAD'
  
  def get_fremont_data(filename='Fremont.csv', url=FREMONT_URL, force_download=False):
     """Download and cache the fremont data
  
     Parameters
     ==========
     filename : string (optional)
         location to save the data
     url : string (optional)
         web location of the data
     force_download : bool (optional)
         if True, force redownload of data
  
     Returns
     =======
     data : pandas.DataFrame
         The fremont bridge data
     """
     if force_download or not os.path.exists(filename):
         urlretrieve(url, filename)
     data = pd.read_csv('Fremont.csv', index_col='Date', parse_dates=True)
     data.columns = ['West', 'East']
     data['Total'] = data['West'] + data['East']
     return data
  
  
new_contents: import os
  from urllib.request import urlretrieve
  
  import pandas as pd
  
  FREMONT_URL = 'https://data.seattle.gov/api/views/65db-xm6k/rows.csv?accessType=DOWNLOAD'
  
  def get_fremont_data(filename='Fremont.csv', url=FREMONT_URL, force_download=False):
     """Download and cache the fremont data
  
     Parameters
     ==========
     filename : string (optional)
         location to save the data
     url : string (optional)
         web location of the data
     force_download : bool (optional)
         if True, force redownload of data
  
     Returns
     =======
     data : pandas.DataFrame
         The fremont bridge data
     """
     if force_download or not os.path.exists(filename):
         urlretrieve(url, filename)
     data = pd.read_csv('Fremont.csv', index_col='Date')
  
     try:
         data.index = pd.to_datetime(data.index, format='%m/%d/%Y %H:%M:%S %p')
     except TypeError:
         data.index = pd.to_datetime(data.index)
  
     data.columns = ['West', 'East']
     data['Total'] = data['West'] + data['East']
     return data
  
subject: refactor data download