updated from Atlas

attic/sequences/slice_test.py

@@ -0,0 +1,38 @@
+"""
+
+    >>> s = SliceDemo()
+    >>> s[1]
+    __getitem__: 1
+    1
+    >>> s[2:5]
+    __getitem__: slice(2, 5, None)
+    [2, 3, 4]
+    >>> s[:2]
+    __getitem__: slice(None, 2, None)
+    [0, 1]
+    >>> s[7:]
+    __getitem__: slice(7, None, None)
+    [7, 8, 9]
+    >>> s[:]
+    __getitem__: slice(None, None, None)
+    [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+    >>> s[1:9:3]
+    __getitem__: slice(1, 9, 3)
+    [1, 4, 7]
+    >>> s[1:9:3, 2:3]
+    __getitem__: (slice(1, 9, 3), slice(2, 3, None))
+    ERROR: list indices must be integers, not tuple
+
+"""
+
+class SliceDemo:
+
+    def __init__(self):
+        self.items = list(range(10))
+
+    def __getitem__(self, pos):
+        print('__getitem__:', pos)
+        try:
+            return self.items.__getitem__(pos)
+        except TypeError as e:
+            print('ERROR:', e)