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    <p>What it seems like is you're trying to make/run multiple reactors. Everything gets attached to the <em>same</em> reactor. Here's how to use a <a href="http://twistedmatrix.com/documents/current/core/howto/defer.html#auto8" rel="noreferrer"><code>DeferredList</code></a> to wait for all of your callbacks to finish.</p> <p>Also note that <code>twisAmaz</code> returns a value. That value is passed through the <code>callbacks</code> <code>DeferredList</code> and comes out as <code>value</code>. Since a <code>DeferredList</code> keeps the order of the things that are put into it, you can cross-reference the index of the results with the index of your ISBNs.</p> <pre><code>from twisted.internet import defer def twisAmaz(contents): stonesoup = BeautifulStoneSoup(contents) ret = {} if stonesoup.find("mediumimage") is None: ret['imageurl'] = "/images/notfound.png" else: ret['imageurl'] = stonesoup.find("mediumimage").url.contents[0] ret['usedPdata'] = stonesoup.find("lowestusedprice") ret['newPdata'] = stonesoup.find("lowestnewprice") ret['titledata'] = stonesoup.find("title") ret['reviewdata'] = stonesoup.find("editorialreview") if stonesoup.find("asin") is not None: ret['asin'] = stonesoup.find("asin").contents[0] else: ret['asin'] = 'None' return ret callbacks = [] for tmpISBN in isbn: #Go through ISBN numbers and get Amazon API information for each callbacks.append(getPage(fetchInfo(tmpISBN)).addCallback(twisAmazon)) def printResult(result): for e, (success, value) in enumerate(result): print ('[%r]:' % isbn[e]), if success: print 'Success:', value else: print 'Failure:', value.getErrorMessage() callbacks = defer.DeferredList(callbacks) callbacks.addCallback(printResult) reactor.run() </code></pre>
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    1. COLooks good, thanks Aaron!
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