# 使用join """ 有个字符串"abc" 如何把字符串单个字符串联起来 得到字符串 "a_b_c" """ b = "abc" print("_".join(b)) print(type(b)) """ 有个列表 ["hello", "world", "你好"] 如何把列表里面的字符串联起来, 得到字符串 "hello_world_你好" """ a = ["hello", "world", "你好"] print("_".join(a)) print(type(a))