31 lines
1003 B
Python
31 lines
1003 B
Python
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import concurrent.futures
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import urllib.request
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URLS = [
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"http://www.foxnews.com/",
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"http://www.cnn.com/",
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"http://europe.wsj.com/",
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"http://www.bbc.co.uk/",
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"http://some-made-up-domain.com/",
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]
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# Retrieve a single page and report the URL and contents
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def load_url(url, timeout):
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with urllib.request.urlopen(url, timeout=timeout) as conn:
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return conn.read()
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# We can use a with statement to ensure threads are cleaned up promptly
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with concurrent.futures.ThreadPoolExecutor(max_workers=5) as executor:
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# Start the load operations and mark each future with its URL
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future_to_url = {executor.submit(load_url, url, 60): url for url in URLS}
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for future in concurrent.futures.as_completed(future_to_url):
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url = future_to_url[future]
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try:
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data = future.result()
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except Exception as exc:
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print("%r generated an exception: %s" % (url, exc))
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else:
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print("%r page is %d bytes" % (url, len(data)))
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