11、join()
string.join(seq)。以string作为分隔符，将seq中所有的元素(的字符串表示)合并为一个新的字符串。
list_of_strings = ['string', 'methods', 'in', 'python']s = '-'.join(list_of_strings)print(s)# string-methods-in-pythonlist_of_strings = ['string', 'methods', 'in', 'python']s = ' '.join(list_of_strings)print(s)# string methods in python
