old_contents: import re
  
  import sh
  
  from .base import DjangoCookieTestCase
  
  
  class TestCookiecutterSubstitution(DjangoCookieTestCase):
      """Test that all cookiecutter instances are substituted"""
  
      def test_all_cookiecutter_instances_are_substituted(self):
          # Build a list containing absolute paths to the generated files
          paths = self.generate_project()
  
          # Construct the cookiecutter search pattern
          pattern = "{{(\s?cookiecutter)[.](.*?)}}"
          re_obj = re.compile(pattern)
  
          # Assert that no match is found in any of the files
          for path in paths:
              for line in open(path, 'r'):
                  match = re_obj.search(line)
                  self.assertIsNone(
                      match,
                      "cookiecutter variable not replaced in {}".format(path))
  
      def test_flake8_complaince(self):
          """generated project should pass flake8"""
          self.generate_project()
          try:
              sh.flake8(self.destpath)
          except sh.ErrorReturnCode as e:
              raise AssertionError(e)
  
new_contents: import re
  
  import sh
  
  from .base import DjangoCookieTestCase
  
  
  class TestCookiecutterSubstitution(DjangoCookieTestCase):
      """Test that all cookiecutter instances are substituted"""
  
      def test_all_cookiecutter_instances_are_substituted(self):
          # Build a list containing absolute paths to the generated files
          paths = self.generate_project()
  
          # Construct the cookiecutter search pattern
          pattern = "{{(\s?cookiecutter)[.](.*?)}}"
          re_obj = re.compile(pattern)
  
          # Assert that no match is found in any of the files
          for path in paths:
              for line in open(path, 'r', encoding='utf-8', errors='ignore'):
                  match = re_obj.search(line)
                  self.assertIsNone(
                      match,
                      "cookiecutter variable not replaced in {}".format(path))
  
      def test_flake8_complaince(self):
          """generated project should pass flake8"""
          self.generate_project()
          try:
              sh.flake8(self.destpath)
          except sh.ErrorReturnCode as e:
              raise AssertionError(e)
  
subject: Fix tests for python 3