网站上的“IOError: [Errno 2] 没有这样的文件或目录”——Python

Question

I'm doing some web scraping in Python and I'm running into a strange error. Sometimes when I try to open and read an html file using a URL I get the following error:

'IOError: [Errno 2] No such file or directory'

The code that is producing this error is here: Terminal doesn't like the last line in this block of code.

for game in games:
            url = game
            page = urllib.urlopen(url).read()

The list games is a list of urls that definitely exist. This is what games looks like when I print it out:

['nba.com/games/20160323/ATLWAS/gameinfo.html', 
'nba.com/games/20160323/MILCLE/gameinfo.html',
'nba.com/games/20160323/TORBOS/gameinfo.html',
'nba.com/games/20160323/ORLDET/gameinfo.html',
'nba.com/games/20160323/NYKCHI/gameinfo.html', 
'nba.com/games/20160323/UTAHOU/gameinfo.html', 
'nba.com/games/20160323/SACMIN/gameinfo.html', 
'nba.com/games/20160323/MIASAS/gameinfo.html', 
'nba.com/games/20160323/PHIDEN/gameinfo.html', 
'nba.com/games/20160323/LALPHX/gameinfo.html', 
'nba.com/games/20160323/DALPOR/gameinfo.html', 
'nba.com/games/20160323/LACGSW/gameinfo.html']

Does anyone know why I'm getting this error? I actually got this error once before, and although I solved it on that occasion, I didn't understand why what I did worked so I wanted to ask the community. Previously, I had games set up so that instead of having the full URL, it only had part of it.

For example, the first element in the old games was /games/20160323/ATLWAS/gameinfo.html . Then in the for loop shown above, instead of url = game , I wrote nba.com+url . When I ran it with the changes outlined above, it ran as expected. Any help would be appreciated.

Answer 1

Python 2 :

for game in games:
        url = "http://" + game
        page = urllib.urlopen(url).read()

(For Python 3 you have to include .request)

page = urllib.request.urlopen(url).read()