old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  from DataGeneration.MapboxAPIWrapper import MapboxAPIWrapper
  from DataGeneration.DatabaseHandler import DatabaseHandler
  from DataGeneration.UniformMapGenerator import UniformMapGenerator
  from DataGeneration.MapLocation import MapLocation
  from DataGeneration.DataGenerator import DataGenerator
  
  # I modified this from the instructions
  handler = DatabaseHandler('db.sqlite3')
  
  handler.add_addresses_from_file(file_name='sparse_addresses.csv')
  handler.add_stops_from_file(file_name='sparse_stops.csv') 
  
  generator = DataGenerator()
  generator.begin()
  generator.initialize(db='db.sqlite3', api_key='api_key.txt')
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  from DataGeneration.MapboxAPIWrapper import MapboxAPIWrapper
  from DataGeneration.DatabaseHandler import DatabaseHandler
  from DataGeneration.UniformMapGenerator import UniformMapGenerator
  from DataGeneration.MapLocation import MapLocation
  from DataGeneration.DataGenerator import DataGenerator
  
  # I modified this from the instructions
  handler = DatabaseHandler('db.sqlite3')
  
  handler.add_addresses_from_file(file_name='sample_data/sparse_addresses.csv')
  handler.add_stops_from_file(file_name='sample_data/sparse_stops.csv') 
  
  generator = DataGenerator()
  generator.begin()
  generator.initialize(db='db.sqlite3', api_key='api_key.txt')
subject: update paths to sample files