old_contents: #!/usr/bin/env python
  
  import os
  import string
  
  for f in os.listdir( os.path.dirname( __file__ ) ):
      name, ext = string.split( f, "." )
      if ( name != "__init__" and ext == "py" ):
          tmp = __import__( name, locals(), globals(), [name], -1 )
          vars()[name] = vars(tmp)[name]
  
  del f, name, ext, os, string
  
new_contents: #!/usr/bin/env python
  
  from .dens_slope import dens_slope
  from .density import density
  from .encmass import encmass
  from .vcirc import vcirc
  
subject: Modify init file.