+
−wrap 0: [0, 'orig']
+
−wrap 1: [1, 0, 'orig']
+
−wrap 2: [2, 1, 0, 'orig']
+
−wrap 3: [3, 2, 1, 0, 'orig']
+
−wrap 4: [4, 3, 2, 1, 0, 'orig']
+
−wrap 0: [0, 4, 3, 2, 1, 0, 'orig']
+
−unwrap 3: 3: [0, 4, 2, 1, 0, 'orig']
+
−unwrap -: 0: [4, 2, 1, 0, 'orig']
+
−unwrap 0: 0: [4, 2, 1, 'orig']
+
−unwrap 4: 4: [2, 1, 'orig']
+
−unwrap 0: -: ValueError
+
−unwrap 2: 2: [1, 'orig']
+
−unwrap 1: 1: ['orig']
+
−unwrap -: -: IndexError
+
−context manager ['orig']
+
−context manager [1, 'orig']
+
−context manager [0, 1, 'orig']
+
−context manager [2, 0, 1, 'orig']
+
−context manager [2, 1, 'orig']
+
−context manager [2, 'orig']
+
−wrap callable object [0, 'orig']