old_contents: import os
  import sys
  
  
  def _initCoverage():
      if  'COVERAGE_PROCESS_START' in os.environ:
          try:
              import coverage
              coverage.process_startup()
          except ImportError:
              pass
  
  
  def getDRCBaseDir():
      return os.environ['DRC_BASE']
  
  def getDRCBaseIsSet():
      return 'DRC_BASE' in os.environ
  
  def updateSysPath(path):
      if path and os.path.isdir(path) and path not in sys.path:
          sys.path.insert(0, path)
          return True
      return False
  
  
  _initCoverage()
  
  # this is for mac homebrew users
  updateSysPath('/usr/local/opt/vtk5/lib/python2.7/site-packages')
  
  # this inserts the build dirs in the path before anything else
  # this ensures modules in the build dirs will take precedence over
  # system versions (homebrew)
  for relDir in ['../../dist-packages', '../../site-packages']:
      sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), relDir)))
      sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), relDir)))
  
new_contents: import os
  import sys
  
  
  def _initCoverage():
      if  'COVERAGE_PROCESS_START' in os.environ:
          try:
              import coverage
              coverage.process_startup()
          except ImportError:
              pass
  
  
  def getDRCBaseDir():
      return os.environ['DRC_BASE']
  
  def getDRCBaseIsSet():
      return 'DRC_BASE' in os.environ
  
  def updateSysPath(path):
      if path and os.path.isdir(path) and path not in sys.path:
          sys.path.insert(0, path)
          return True
      return False
  
  
  _initCoverage()
  
  # this is for mac homebrew users
  updateSysPath('/usr/local/opt/vtk5/lib/python2.7/site-packages')
  
  # this inserts the build dirs in the path before anything else
  # this ensures modules in the build dirs will take precedence over
  # system versions (homebrew)
  for relDir in ['../../dist-packages', '../../site-packages']:
      sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), relDir)))
  
subject: remove duplicate line