diff --git a/grits/coarsegrain.py b/grits/coarsegrain.py
index 7c249e3..bcd691b 100644
--- a/grits/coarsegrain.py
+++ b/grits/coarsegrain.py
@@ -727,7 +727,7 @@ def save(self, cg_gsdfile, start=0, stop=None, stride=1):
                 new_snap = gsd.hoomd.Frame()
                 position = []
                 mass = []
-                #make an empty list for forces here
+                # make an empty list for forces here
 
                 orientation = [] if self.aniso_beads else None
                 f_box = freud.Box.from_box(s.configuration.box)
@@ -741,8 +741,8 @@ def save(self, cg_gsdfile, start=0, stop=None, stride=1):
                         sum(s.particles.mass[x]) * self.mass_scale for x in inds
                     ]
 
-                    #do the force calculation here
-                    
+                    # do the force calculation here
+
                     if self.aniso_beads:
                         for x in inds:
                             masses = s.particles.mass[x] * self.mass_scale