old_contents: # coding: utf-8
  import os
  
  SOURCES_DIR = 'sources'
  
  SOURCES = {
      'countries': {
          'path': os.path.join(SOURCES_DIR, 'countries.txt'),
          'url': 'http://download.geonames.org/export/dump/countryInfo.txt',
          'exclude_lines_regex': r'^#',
          'colummns': (
              'iso',
              'iso3',
              'iso_numeric',
              'fips',
              'country',
              'capital',
              'area',
              'population',
              'continent',
              'tld',
              'currency_code',
              'currency_name',
              'phone',
              'postal_code_format',
              'postal_code_regex',
              'languages',
              'geonameid',
              'neighbours',
              'equivalent_fips_code',
          )
      },
      'cities': {
          'path': os.path.join(SOURCES_DIR, 'cities.txt'),
      }
  }
  
new_contents: # coding: utf-8
  import os
  
  SOURCES_DIR = 'cities_sources'
  
  SOURCES = {
      'countries': {
          'path': os.path.join(SOURCES_DIR, 'countries.txt'),
          'url': 'http://download.geonames.org/export/dump/countryInfo.txt',
          'exclude_lines_regex': r'^#',
          'colummns': (
              'iso',
              'iso3',
              'iso_numeric',
              'fips',
              'country',
              'capital',
              'area',
              'population',
              'continent',
              'tld',
              'currency_code',
              'currency_name',
              'phone',
              'postal_code_format',
              'postal_code_regex',
              'languages',
              'geonameid',
              'neighbours',
              'equivalent_fips_code',
          )
      },
      'cities': {
          'path': os.path.join(SOURCES_DIR, 'cities.txt'),
      }
  }
  
subject: Change SOURCES_DIR to cities_sources