python元组

# coding: utf-8
__author__ = 'www.py3study.com'
class showtuple(object):
    def __init__(self):
        self.T1 = ()
        self.createtuple()  #创建元组
        self.subtuple()     #元组分片
        self.tuple2list()   #元组，列表转换

    def createtuple(self):
        print(u'创建元组')
        print(u"T1 = (1,2,3,4,5,6,7,8,9,10)")
        self.T1 = (1,2,3,4,5,6,7,8,9,10)
        print(u"T1 =")
        print(self.T1)
        print('\n')

    def subtuple(self):
        print(u"元组分片:")
        print(u"取元组T1的第4个到最后一个元组组成的新元组，执行命令T1[3:]")
        print(self.T1[3:])
        print(u"取元组T1的第2个到倒数第2个元素组成的新元组,步长为2，执行命令T1[1:-1:2]")
        print(self.T1[1:-1:2])
        print('\n')

    def tuple2list(self):
        print(u"元组转换成列表")
        print(u"显示元组")
        print(u"T1 =")
        print(self.T1)
        print(u"执行命令 L2 = list(T1)")
        L2 = list(self.T1)
        print(u"显示列表")
        print(u"L2 =")
        print(L2)
        print(u"列表追加一个元素100后，转换成元组，执行命令L2.append(100),tuple(L2)")
        L2.append(100)
        print(u"显示新元组")
        print(tuple(L2))

if __name__ == '__main__':
    st = showtuple()