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Multiprocessing Queue maxsize limit is 32767

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I'm trying to write a Python 2.6 (OSX) program using multiprocessing, and I want to populate a Queue with more than the default of 32767 items. from multiprocessing import Queue Queue(2**15) # raises OSError Queue(32767) works fine, but any higher number (e.g. Queue(32768) ) fails with OSError: [Errno 22] Invalid argument Is there a workaround for this issue? One approach would be to wrap your multiprocessing.Queue with a custom class (just on the producer side, or transparently from the consumer perspective). Using that you would queue up items to be dispatched to the Queue object that you're

http request with timeout, maximum size and connection pooling

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问题 I'm looking for a way in Python (2.7) to do HTTP requests with 3 requirements: timeout (for reliability) content maximum size (for security) connection pooling (for performance) I've checked quite every python HTTP librairies, but none of them meet my requirements. For instance: urllib2: good, but no pooling import urllib2 import json r = urllib2.urlopen('https://github.com/timeline.json', timeout=5) content = r.read(100+1) if len(content) > 100: print 'too large' r.close() else: print json

How to prevent Warning: POST Content-Length and memory size

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问题 Currently when user uploads a photo the page says "Warning: POST Content-Length of XXX bytes exceeds the limit of 21000000 bytes in Unknown on line 0". I know what that means and I am NOT looking for the solultions like the increasing the max_upload values or even memory_size_limit... Because users may and users will upload terabytes of nonsense even if you explicitly tell them only max 20MB files and only images are allowed. I am looking for a solution on: How to prevent this warning(s) to

Multiprocessing Queue maxsize limit is 32767

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问题 I'm trying to write a Python 2.6 (OSX) program using multiprocessing, and I want to populate a Queue with more than the default of 32767 items. from multiprocessing import Queue Queue(2**15) # raises OSError Queue(32767) works fine, but any higher number (e.g. Queue(32768) ) fails with OSError: [Errno 22] Invalid argument Is there a workaround for this issue? 回答1: One approach would be to wrap your multiprocessing.Queue with a custom class (just on the producer side, or transparently from the

Max square size for unknown number inside rectangle

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问题 If I have a set of tiles (squares) which can be any number and they are to fill a container (rectangle) of an unknown size how do I work out the maximum size of the tiles without having any of them overlap. So if I have 2 tiles and the rectangle is 100 * 100 then the max tile size is 50 * 50. This would also be the max size of tile if there was 3 or 4 tiles for this size of rectanlgle, which just so happens to be a square in this example. If the rectanlge was 100 * 30 and I had 2 tiles, the