From eb622e5318d6732ad8306bfd5a9cf9ef9efebb86 Mon Sep 17 00:00:00 2001
From: Adam Johnson <AdamJohnso@gmail.com>
Date: Sun, 2 Sep 2018 21:36:48 -0400
Subject: [PATCH] Prefer dict `setdefault` vs membership tests

---
 korman/exporter/mesh.py | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/korman/exporter/mesh.py b/korman/exporter/mesh.py
index 8fbf643..c7bb955 100644
--- a/korman/exporter/mesh.py
+++ b/korman/exporter/mesh.py
@@ -492,10 +492,8 @@ class MeshConverter(_MeshManager):
             self._report.msg("Exported hsGMaterial '{}' geometry into '{}'",
                              geospan.material.name, dspan.key.name, indent=1)
             idx = dspan.addSourceSpan(geospan)
-            if dspan not in _diindices:
-                _diindices[dspan] = [idx,]
-            else:
-                _diindices[dspan].append(idx)
+            diidx = _diindices.setdefault(dspan, [])
+            diidx.append(idx)
 
         # Step 3.1: Harvest Span indices and create the DIIndices
         drawables = []