First cut at a basic Python implementation

src/Record/__init__.py

@@ -20,4 +20,61 @@
 positions within the array.
 """
 
-from _Record import Record
+_marker = object()
+
+
+class Record(object):
+
+    __record_schema__ = None
+    __slots__ = ('_data', '_schema')
+
+    def __init__(self, data=None):
+        cls_schema = type(self).__record_schema__
+        if cls_schema is None:
+            cls_schema = {}
+        self._schema = schema = cls_schema
+        if data is not None:
+            self._data = data
+        else:
+            self._data = (None, ) * len(schema)
+
+    def __getstate__(self):
+        return self._data
+
+    def __setstate__(self, state):
+        self.__init__(state)
+
+    def __getitem__(self, key):
+        if isinstance(key, int):
+            pos = key
+        else:
+            try:
+                pos = self._schema[key]
+            except IndexError:
+                raise TypeError('invalid record schema')
+        return self._data[pos]
+
+    def __getattr__(self, key):
+        if key in self.__slots__:
+            return object.__getattribute__(self, key)
+        try:
+            return self.__getitem__(key)
+        except KeyError:
+            raise AttributeError(key)
+
+    def __setitem__(self, key, value):
+        if isinstance(key, int):
+            pos = key
+        else:
+            try:
+                pos = self._schema[key]
+            except IndexError:
+                raise TypeError('invalid record schema')
+        old = self._data
+        self._data = old[:pos] + (value, ) + old[pos + 1:]
+
+    def __setattr__(self, key, value):
+        if key in self.__slots__:
+            object.__setattr__(self, key, value)
+        else:
+            self.__setitem__(key, value)