Using the python documentation on ThreadPoolExecutor there is this request function:
import concurrent.futures
import urllib.request
URLS = ['http://www.foxnews.com/',
'http://www.cnn.com/',
'http://europe.wsj.com/',
'http://www.bbc.co.uk/',
'http://some-made-up-domain.com/']
# Retrieve a single page and report the URL and contents
def load_url(url, timeout):
with urllib.request.urlopen(url, timeout=timeout) as conn:
return conn.read()
# We can use a with statement to ensure threads are cleaned up promptly
with concurrent.futures.ThreadPoolExecutor(max_workers=5) as executor:
# Start the load operations and mark each future with its URL
future_to_url = {executor.submit(load_url, url, 60): url for url in URLS}
for future in concurrent.futures.as_completed(future_to_url):
url = future_to_url[future]
try:
data = future.result()
except Exception as exc:
print('%r generated an exception: %s' % (url, exc))
else:
print('%r page is %d bytes' % (url, len(data)))
And if the URL list was adjusted as such:
URLS = [['http://www.foxnews.com/','American'],
['http://www.cnn.com/','American'],
['http://europe.wsj.com/', 'European'],
['http://www.bbc.co.uk/', 'Eurpoean']
['http://some-made-up-domain.com/','Unknown']]
You can easily pull the URL by indexing the list:
future_to_url = {executor.submit(load_url, url, 60): url[0] for url in URLS}
What I'm struggling with is how would I go about extracting the region from this list (index 1) to be included in as_completed result so the print is something like:
print('%r %r page is %d bytes' % (region, url, len(data))
from How do I get an secondary list item from ThreadPoolExecutor while sending requests?
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