some work

py/brown/brown.py

@@ -40,7 +40,6 @@ class BrownIterator(object):
 		delta_px, delta_py = self._interaction(self.x, self.y)
 		self.px += delta_px
 		self.py += delta_py
-		print(self.px)
 		# XXX: We need the (-1)**i to make the problem
 		# symmetric.
 		self.px[np.isnan(self.px)] = self.speed_of_light * (-1)**self._i