Is there a way to stop downloading from a URL after a certain of bytes have been received?
In PHP there is:
$contents = @file_get_contents($page, FALSE, NULL, 0, 40000);
The fifth argument tells file_get_contents to stop downloading after 40000 bytes. I'm basically looking for something similar in Python. A search on Google and reading docs didn't yield anything. Help would be great, I'm new to Python.
Thanks.
如果您正在使用urllib.urlopen：
>>> import urllib
>>> u = urllib.urlopen('http://stackoverflow.com')
>>> x = u.read(1000)
>>> len(x)
1000
>>> u.close()
urllib.urlopen返回类文件对象；您可以指定要下载的字节数。
>>> import requests
>>> r = requests.get('http://stackoverflow.com', stream=True)
>>> x = next(r.iter_content(1000), '')[:1000] # iter_content() could yield more than requested; need [:1000]
>>> len(x)
1000
我不是 python 专业人士，但这似乎可以完成这项工作：
req = urllib2.urlopen(url)
CHUNK = 4000
chunk = req.read(CHUNK)