urllib没有给我正确的文件类型

Question

I'm using the urllib python module to get images from an external URL. It works well, but there are some images that give me problems like this: https://cdn.tutsplus.com/wp/uploads/2014/01/grunt-logo-400.png

My code is the following

import urllib
img = urllib.urlretrieve("https://cdn.tutsplus.com/wp/uploads/2014/01/grunt-logo-400.png")

When I print img it show me: "/tmp/tmpbuhfUW.png"

But if I print img[1].type it gives me: "text/html"

So the filetype is incorrect.

Is there anny solution?

PS: I checked my /tmp folder where the image is downloaded and I noticed the image is blank. PS2: also I've tried with urllib2.urlopen("cdn.tutsplus.com/wp/uploads/2014/01/grunt-logo-400.png") But it gives me error 403

UPDATE: Finally I solved it by doing the following:

class MyOpener(urllib.FancyURLopener):
    version = 'Mozilla/5.0 (Windows; U; Windows NT 5.1; it; rv:1.8.1.11) Gecko/20071127 Firefox/2.0.0.11'

myopener = MyOpener()
i = myopener.retrieve("https://cdn.tutsplus.com/wp/uploads/2014/01/grunt-logo-400.png")

Now it prints the filetype as "image/png"

Answer 1

As far as I can tell, you aren't doing anything wrong. Urllib is just guessing the mime type incorrectly. I don't know exactly what you're trying to do, but you could say

filetype = img[0].split('.')[1]

to retrieve the filetype, and then check if it was contained in an array of different image filetypes to determine if it was a link to an image.