1 files changed, 21 insertions, 0 deletions
diff --git a/pypers/oxford/defaultdict.py b/pypers/oxford/defaultdict.py
new file mode 100755
index 0000000..ce14508
--- /dev/null
+++ b/pypers/oxford/defaultdict.py
@@ -0,0 +1,21 @@
+
+def defaultdict(default, dictclass=dict):
+    class defdict(dictclass):
+        def __getitem__(self, key):
+            try:
+                return super(defdict, self).__getitem__(key)
+            except KeyError:
+                return self.setdefault(key, default)
+    return defdict
+
+d = defaultdict(0)()
+d["x"] += 1
+d["x"] += 1
+d["y"] += 1
+print d
+
+d = defaultdict(list())()
+d["x"].append(1)
+d["x"].append(2)
+d["y"].append(1)
+print d