元组

ch02/tuple.py

@@ -0,0 +1,27 @@
+tuple1 = 1, 2 + 3
+print(type(tuple1))
+
+tuple2 = ("the", 1, ("and", "only"))
+print(tuple2)
+
+print(type((10, 20)))
+
+empty_tuple = ()
+single_element_tuple = (10,)
+print(type(empty_tuple))
+print(type(single_element_tuple))
+
+code = ('up', 'up', 'down', 'down') + ('left', 'right') * 2
+print(code)
+print(len(code))
+print(code.count('up'))
+print(code.index('right'))
+
+list1 = [0, 1, 2]
+has_mutable_element_tuple = (list1, 'up')
+print(has_mutable_element_tuple)
+has_mutable_element_tuple[0].reverse()
+print(has_mutable_element_tuple)
+
+a, b = 1, 2
+print(a, b)