Revert changes

# copy lammps.py to pydir if it exists

# if pydir not specified, install in site-packages via distutils setup()

if 'liblammps.dylib' in os.listdir('../src/'):

  lib_ext = ".dylib"

else: 

  lib_ext = ".so"

if pydir:

  if not os.path.isdir(pydir):

    print( "ERROR: pydir %s does not exist" % pydir)

  str = "cp ../src/liblammps.so %s" % pydir

  print(str)

  try:

     shutil.copyfile("../src/liblammps" + lib_ext, os.path.join(pydir,"liblammps" + lib_ext) )

     shutil.copyfile("../src/liblammps.so", os.path.join(pydir,"liblammps.so") )

  except shutil.Error:

    pass # source and destination are identical

  sys.exit()

        url = "http://lammps.sandia.gov",

        description = "LAMMPS molecular dynamics library",

        py_modules = ["lammps"],

        data_files = [(get_python_lib(), ["../src/liblammps" + lib_ext])])

        data_files = [(get_python_lib(), ["../src/liblammps.so"])])

except:

  tryuser=True

  print ("Installation into global site-packages dir failed.\nTrying user site dir %s now." % site.USER_SITE)

    url = "http://lammps.sandia.gov",

    description = "LAMMPS molecular dynamics library",

    py_modules = ["lammps"],

    data_files = [(site.USER_SITE, ["../src/liblammps" + lib_ext])])

    data_files = [(site.USER_SITE, ["../src/liblammps.so"])])

  except: 

    print("Installation into user site package dir failed.\nGo to ../python and install manually.")