1.str >>>list
str1 = "12345" list1 = list(str1) print list1 str2 = "123 sjhid dhi" list2 = str2.split() #or list2 = str2.split(" ") print list2 str3 = "www.google.com" list3 = str3.split(".") print list3
输出
['1', '2', '3', '4', '5'] ['123', 'sjhid', 'dhi'] ['www', 'google', 'com']
list >>>str
str4 = "".join(list3) print str4 str5 = ".".join(list3) print str5 str6 = " ".join(list3) print str6
输出
wwwgooglecom
www.google.com
www google com
原文：https://blog.csdn.net/roytao2/article/details/53433373