formatting

examples/extensions.py

@@ -1,22 +1,26 @@
 import scadnano as sc
 
 
+def main() -> None:
+    d = create_design()
+    d.write_scadnano_file(directory='output_designs')
+
+
 def create_design() -> sc.Design:
     width = 8
     helices = [sc.Helix(max_offset=32) for _ in range(3)]
     design = sc.Design(helices=helices, grid=sc.square)
 
-    design.draw_strand(0, 0).extension_5p(5, display_length=2.5, display_angle=45)\
-        .move(width).cross(1).move(-width).loopout(2, 3).move(width)\
+    design.draw_strand(0, 0).extension_5p(5, display_length=2.5, display_angle=45) \
+        .move(width).cross(1).move(-width).loopout(2, 3).move(width) \
         .extension_3p(7).with_domain_name("ext_3p")
 
-    design.draw_strand(0, 24).extension_5p(5, display_length=3.5, display_angle=60)\
-        .move(-width).cross(1).move(width).loopout(2, 3).move(-width)\
+    design.draw_strand(0, 24).extension_5p(5, display_length=3.5, display_angle=60) \
+        .move(-width).cross(1).move(width).loopout(2, 3).move(-width) \
         .extension_3p(7).with_domain_name("ext_3p_top")
 
     return design
 
 
 if __name__ == '__main__':
-    d = create_design()
-    d.write_scadnano_file(directory='output_designs')
+    main()

examples/output_designs/extensions.sc

@@ -1,5 +1,5 @@
 {
-  "version": "0.17.3",
+  "version": "0.17.5",
   "grid": "square",
   "helices": [
     {"max_offset": 32, "grid_position": [0, 0]},