Python:如何将集合中的条目连接成一个字符串? [英] Python: how to join entries in a set into one string?

问题描述

基本上，我正在尝试将一组条目合并在一起以输出一个字符串.我正在尝试使用类似于列表的加入功能的语法.这是我的尝试:

Basically, I am trying to join together the entries in a set in order to output one string. I am trying to use syntax similar to the join function for lists. Here is my attempt:

list = ["gathi-109","itcg-0932","mx1-35316"]
set_1 = set(list)
set_2 = set(["mx1-35316"])
set_3 = set_1 - set_2
print set_3.join(", ")

但是我收到此错误:AttributeError: 'set' object has no attribute 'join'

等效调用集合是什么?

What is the equivalent call for sets?

推荐答案

', '.join(set_3)

join是字符串方法，而不是set方法.

The join is a string method, not a set method.

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