def create_single_particle_state(imsize, radius=<NUM_LIT>, seed=None, **kwargs):
_seed_or_not(seed)<EOL>imsize = _toarr(imsize)<EOL>pos = imsize.reshape(-<NUM_LIT:1>,<NUM_LIT:3>)/<NUM_LIT><EOL>rad = radius<EOL>return create_state(util.NullImage(shape=imsize), pos, rad, **kwargs)<EOL>
Creates a single particle state

Parameters:
-----------
imsize : tuple, array_like, or integer
    the unpadded image size to fill with particles

radius : float
    radius of particles to add

seed : integer
    set the seed if desired

*args, **kwargs : see create_state