added a line before main

ssagynbayeva · ssagynbayeva · commit 8e8e0d6eb83e · 2023-04-03T16:29:55.000-04:00
diff --git a/pyro/mesh/patch.py b/pyro/mesh/patch.py
@@ -947,5 +947,6 @@ def cell_volumes(self):
 
         return 0.5 * (r1 ** 2 - r0 ** 2) * (t1 - t0)
 
+
 if __name__ == "__main__":
     do_demo()
