Slightly more efficient to just print the string.

diff --git a/joy/gui/world.py b/joy/gui/world.py
index 48cbbdd..4712f86 100644 (file)
--- a/joy/gui/world.py
+++ b/joy/gui/world.py
@@ -167,7 +167,7 @@ class StackWorld(StackDisplayWorld):
                self.viewer.update_stack(self.stack)
 
        def print_stack(self):
-               print('%s . ' % stack_to_string(self.stack), end='')
+               print(stack_to_string(self.stack), '•', end=' ')
                if self.viewer:
                        self.viewer.update_stack(self.stack)