old_contents: #!/usr/bin/env python3
  """Run tests.
  
  Whether run from the terminal (by developer or CI) or from the editor,
  this file makes sure the tests are run in a similar manner every-time.
  """
  
  # Standard library
  import sys
  from os.path import join, realpath, dirname
  
  # Third Party modules
  import nose
  import coverage
  
  # NOTE:: Haven't added a proper CLI to this file because mixing the CLI with
  #        coverage, nose and remove_files.py is a complicated problem.
  #        On the other hand, using source argument for coverage works just fine.
  _dev_tools_dir = realpath(dirname(__file__))
  
  COVERAGERC_FILE = join(_dev_tools_dir, ".coveragerc")
  TEST_DIRECTORY = join(dirname(_dev_tools_dir), "py2c")
  
  GENERATE_REPORT = True
  GENERATE_REPORT_HTML = True
  GENERATE_REPORT_TEXT = True
  
  
  def run_tests():
      # Any arguments that start with "py2c" or None if no such arguments exist
      source = list(filter(lambda x: x.startswith("py2c"), sys.argv[1:])) or None
  
      cov = coverage.coverage(config_file=COVERAGERC_FILE, source=source)
      cov.start()
      success = nose.run(
          env={
              "NOSE_INCLUDE_EXE": "True",
              "NOSE_WITH_HTML_REPORT": "True",
              "NOSE_HTML_OUTPUT_FILE": "/tmp/test-html/index.html",
              "NOSE_WITH_SPECPLUGIN": "True"
          },
          defaultTest=TEST_DIRECTORY,
      )
      cov.stop()
      cov.save()
  
      if GENERATE_REPORT or success:
          if GENERATE_REPORT_HTML:
              cov.html_report()
          if GENERATE_REPORT_TEXT:
              cov.report()
      sys.exit(0 if success else 1)
  
  
  def main():
      run_tests()
  
  if __name__ == '__main__':
      main()
  
new_contents: #!/usr/bin/env python3
  """Run tests.
  
  Whether run from the terminal (by developer or CI) or from the editor,
  this file makes sure the tests are run in a similar manner every-time.
  """
  
  # Standard library
  import sys
  from os.path import join, realpath, dirname
  
  # Third Party modules
  import nose
  import coverage
  
  # NOTE:: Haven't added a proper CLI to this file because mixing the CLI with
  #        coverage, nose and remove_files.py is a complicated problem.
  #        On the other hand, using source argument for coverage works just fine.
  _dev_tools_dir = realpath(dirname(__file__))
  
  COVERAGERC_FILE = join(_dev_tools_dir, ".coveragerc")
  PACKAGE_DIRECTORY = join(dirname(_dev_tools_dir), "py2c")
  
  GENERATE_REPORT = True
  GENERATE_REPORT_HTML = True
  GENERATE_REPORT_TEXT = True
  
  
  def run_tests():
      # Any arguments that start with "py2c" or None if no such arguments exist
      source = list(filter(lambda x: x.startswith("py2c"), sys.argv[1:])) or None
  
      cov = coverage.coverage(config_file=COVERAGERC_FILE, source=source)
      cov.start()
      success = nose.run(
          env={
              "NOSE_INCLUDE_EXE": "True",
              "NOSE_WITH_SPECPLUGIN": "True"
          },
          defaultTest=PACKAGE_DIRECTORY,
      )
      cov.stop()
      cov.save()
  
      if GENERATE_REPORT or success:
          if GENERATE_REPORT_HTML:
              cov.html_report()
          if GENERATE_REPORT_TEXT:
              cov.report()
      sys.exit(0 if success else 1)
  
  
  def main():
      run_tests()
  
  if __name__ == '__main__':
      main()
  
subject: Rename variable, remove redundant lines