# 常用数据结构 List exeList = [123, '234','hell', 70.2]; tinyList = ['woca', 21]; tinyList[1] = 35; print(exeList); print(exeList[0]); print(exeList[1:3]); print(exeList[2:]); print(exeList + tinyList); # Tuple(元组)，元素不能修改 tuple = ('abc',123,'ccc',70.5); tinyTuple = ('woca','heiheihei'); print('===================='); print(tuple); print(tuple[0]); print(tuple[1:3]); print(tuple[2:]); print(tuple * 2); print(tuple + tinyTuple); # 集合（set） print('=============set'); student = {'tome','hello','lily','lucy','lucy'}; print(student); if ('tome' in student) : print('in set student'); else: print('not in set student'); a = set('abcaaadefdd'); b = set('mnadb'); print(a); print(a - b); # a b 差集 print(a | b); # a b 并集 print(a & b); # a b求交集 print(a ^ b); # a b不同时存在的元素