python之如何从元组返回带引号的字符串

我有一个字符串元组，我想将其内容提取为带引号的字符串，即

tup=('string1', 'string2', 'string3') 
 
when i do this 
 
main_str = ",".join(tup) 
 
#i get 
 
main_str = 'string1, string2, string3' 
 
#I want the main_str to have something like this 
 
main_str = '"string1", "string2", "string3"' 

加思

请您参考如下方法:

", ".join('"{0}"'.format(i) for i in tup) 

或

", ".join('"%s"' % i for i in tup)