TypeError: takes exactly 0 arguments (1 given)

Question

I am using python to generate a rss file,but when i call this method, it post a error"TypeError: writeRssFile() takes exactly 0 arguments (1 given)"

#!/usr/bin/env python2
# encoding: utf-8
import os,PyRSS2Gen
def writeRssFile(*newslist):
   item =[]
   for i in range(0,len(newslist)):
        item.append(PyRSS2Gen.RSSItem(
            title = newslist[i].get('title'),
            description = newslist[i].get('content'),
            pubDate = datetime.datetime.now()))
   rss = PyRSS2Gen.RSS2(
   title = "Andrew's PyRSS2Gen feed",
   link = "http://www.dalkescientific.com/Python/PyRSS2Gen.html",
   description = "The latest news about PyRSS2Gen, a "
                 "Python library for generating RSS2 feeds",
   lastBuildDate = datetime.datetime.now(),
   items = item[:],
   )

   rss.write_xml(open("pyrss2gen.xml", "w"))

i want call this method like this way:

newslist=[{'title':'title1','content':'content1'},{'title':'title2','content':'content2'}]
writeRssFile(newslist)

I had try googling on this but I'm not really very sure what is the exactly reason, so hopefully can get help from here. Thanks!

Answer 1

You accept variable number of arguments. So, you need to unpack the list while calling, like this

writeRssFile(*newslist)

Also, you need to import datetime module.

Apart from that, when the range actually starts from 0, you can omit that. So,

range(0, len(newslist))

is the same as

range(len(newslist))