old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  """IPython -- An enhanced Interactive Python
  
  The actual ipython script to be installed with 'python setup.py install' is
  in './scripts' directory. This file is here (ipython source root directory)
  to facilitate non-root 'zero-installation' (just copy the source tree
  somewhere and run ipython.py) and development. """
  
  if __name__ != "__main__":
      raise RuntimeError('You are trying to import the ipython.py executable. '
              'Did you mean to call "import IPython" (case-sensitive) instead?')
  
  # Ensure that the imported IPython is the local one, not a system-wide one
  import os, sys
  this_dir = os.path.dirname(sys.argv[0])
  sys.path.insert(0, this_dir)
  
  # Now proceed with execution
  execfile(os.path.join(
      this_dir, 'IPython', 'scripts', 'ipython'
  ))
  
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  """IPython -- An enhanced Interactive Python
  
  The actual ipython script to be installed with 'python setup.py install' is
  generated by distutils via the `console_scripts` mechanism.  This file is here
  (ipython source root directory) to facilitate non-root 'zero-installation'
  (just copy the source tree somewhere and run ipython.py) and development.
  
  """
  
  if __name__ != "__main__":
      raise RuntimeError('You are trying to import the ipython.py executable. '
              'Did you mean to call "import IPython" (case-sensitive) instead?')
  
  # Ensure that the imported IPython is the local one, not a system-wide one
  import os, sys
  this_dir = os.path.dirname(sys.argv[0])
  sys.path.insert(0, this_dir)
  
  # Now proceed with execution
  execfile(os.path.join(
      this_dir, 'IPython', 'scripts', 'ipython'
  ))
  
subject: Correct docstring of ipython.py