1 def count(self, value): # real signature unknown; restored from __doc__
2 """ T.count(value) -> integer -- return number of occurrences of value """
3 return 0
1 练习1、统计元组中元素出现次数
2 aa = ("rhel",34,"fdsf","rhel","dsss",456,"rhel")
3 k = aa.count("rhel") #计算元组中指定元素出现的个数
4 print(k)
5 #执行结果：
6 3
1 def index(self, value, start=None, stop=None): # real signature unknown; restored from __doc__
2 """
3 T.index(value, [start, [stop]]) -> integer -- return first index of value.
4 Raises ValueError if the value is not present.
5 """
6 return 0
1 #练习2、找出指定元素的索引位置
2 aa = ("rhel",34,"fdsf","rhel","dsss",456,"rhel")
3 k = aa.index("rhel") #寻找指定元组元素的索引位置，有重复则输出最前面的索引位置
4 print(k)
5 #执行结果：
6 0
1 #练习3、元组与列表的转换
2 li = [11,22,33,"wer","are",]
3 aa = ("rhel",34,"fdsf","rhel","dsss",456,"rhel")
4 print(type(li)) #列表的类是list，列表的所有功能都在类里面
5 print(type(aa)) #元组的类是tuple
6 print(tuple(li)) #元组和列表是可以相互转换的
7 print(list(aa))
8 #执行结果：
9 <class 'list'>
10 <class 'tuple'>
11 (11, 22, 33, 'wer', 'are')
12 ['rhel', 34, 'fdsf', 'rhel', 'dsss', 456, 'rhel']