diff --git a/python/lammps/pylammps.py b/python/lammps/pylammps.py
index 1e7d9bf3c4..101604a055 100644
--- a/python/lammps/pylammps.py
+++ b/python/lammps/pylammps.py
@@ -818,7 +818,7 @@ class PyLammps(object):
     return self.__getattr__("print")(s)
 
   def __dir__(self):
-    return ['angle_coeff', 'angle_style', 'atom_modify', 'atom_style', 'atom_style',
+    return sorted(set(['angle_coeff', 'angle_style', 'atom_modify', 'atom_style', 'atom_style',
     'bond_coeff', 'bond_style', 'boundary', 'change_box', 'communicate', 'compute',
     'create_atoms', 'create_box', 'delete_atoms', 'delete_bonds', 'dielectric',
     'dihedral_coeff', 'dihedral_style', 'dimension', 'dump', 'fix', 'fix_modify',
@@ -828,7 +828,7 @@ class PyLammps(object):
     'pair_style', 'processors', 'read', 'read_data', 'read_restart', 'region',
     'replicate', 'reset_timestep', 'restart', 'run', 'run_style', 'thermo',
     'thermo_modify', 'thermo_style', 'timestep', 'undump', 'unfix', 'units',
-    'variable', 'velocity', 'write_restart']
+    'variable', 'velocity', 'write_restart'] + self.lmp.available_styles("command")))
 
   def __getattr__(self, name):
     """