\u3010python\u3011\u534f\u7a0bCoroutines<\/a>\u3002<\/p>\n\n\n\u9996\u5148\u4e00\u4e2a\u94fe\u63a5\uff0c\u8be5\u94fe\u63a5\u4f1a\u5ef6\u65f65\u79d2\u54cd\u5e94\u8bf7\u6c42http:\/\/www.httpbin.org\/delay\/5<\/p>\n\n\n
\u6211\u4eec\u5c31\u7528\u8fd9\u4e2a\u94fe\u63a5\u6a21\u62df\u722c\u866b\u4e2d\u7684\u54cd\u5e94\u95ee\u9898\u3002<\/p>\n\n\n
\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u4e00\u4e2a\u652f\u6301\u5f02\u6b65\u8bf7\u6c42\u7684\u5e93aiohttp\u6765\u642d\u914dasyncio\u5b8c\u6210\u6211\u4eec\u7684\u5f02\u6b65\u722c\u866b\u3002<\/p>\n\n\n
pip install aiohttp<\/code><\/pre>\n\n\n\u4e0b\u9762\u6211\u4eec\u5c06\u6295\u5165\u5b9e\u6218\uff1a<\/p>\n\n\n
import time\nimport aiohttp\nimport asyncio\nasync def get(url):\n session = aiohttp.ClientSession()\n response = await session.get(url)\n await response.text()\n await session.close()\n return response\nasync def request():\n url = 'http:\/\/www.httpbin.org\/delay\/5'\n print('waiting for', url)\n response = await get(url)\n print('get response from', url, 'response', response)\nstart = time.time()\ntasks = [asyncio.ensure_future(request()) for _ in range(5)]\nloop = asyncio.get_event_loop()\nloop.run_until_complete(asyncio.wait(tasks))\nprint(time.time() - start)<\/code><\/pre>\n\n\n\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u603b\u7528\u65f6\u53ea\u67095.4\u79d2\uff0c\u8bf4\u660e\u4ed6\u4eec\u5e76\u4e0d\u662f\u201c\u987a\u5e8f\u201d\u8fd0\u884c\u3002<\/p>\n\n\n
waiting for http:\/\/www.httpbin.org\/delay\/5\nwaiting for http:\/\/www.httpbin.org\/delay\/5\nwaiting for http:\/\/www.httpbin.org\/delay\/5\nwaiting for http:\/\/www.httpbin.org\/delay\/5\nwaiting for http:\/\/www.httpbin.org\/delay\/5\nget response from http:\/\/www.httpbin.org\/delay\/5 response <ClientResponse(http:\/\/www.httpbin.org\/delay\/5) [200 OK]>\n<CIMultiDictProxy('Date': 'Mon, 06 Dec 2021 06:21:30 GMT', 'Content-Type': 'application\/json', 'Content-Length': '367', 'Connection': 'keep-alive', 'Server': 'gunicorn\/19.9.0', 'Access-Control-Allow-Origin': '*', 'Access-Control-Allow-Credentials': 'true')>\nget response from http:\/\/www.httpbin.org\/delay\/5 response <ClientResponse(http:\/\/www.httpbin.org\/delay\/5) [200 OK]>\n<CIMultiDictProxy('Date': 'Mon, 06 Dec 2021 06:21:30 GMT', 'Content-Type': 'application\/json', 'Content-Length': '367', 'Connection': 'keep-alive', 'Server': 'gunicorn\/19.9.0', 'Access-Control-Allow-Origin': '*', 'Access-Control-Allow-Credentials': 'true')>\nget response from http:\/\/www.httpbin.org\/delay\/5 response <ClientResponse(http:\/\/www.httpbin.org\/delay\/5) [200 OK]>\n<CIMultiDictProxy('Date': 'Mon, 06 Dec 2021 06:21:30 GMT', 'Content-Type': 'application\/json', 'Content-Length': '367', 'Connection': 'keep-alive', 'Server': 'gunicorn\/19.9.0', 'Access-Control-Allow-Origin': '*', 'Access-Control-Allow-Credentials': 'true')>\nget response from http:\/\/www.httpbin.org\/delay\/5 response <ClientResponse(http:\/\/www.httpbin.org\/delay\/5) [200 OK]>\n<CIMultiDictProxy('Date': 'Mon, 06 Dec 2021 06:21:30 GMT', 'Content-Type': 'application\/json', 'Content-Length': '367', 'Connection': 'keep-alive', 'Server': 'gunicorn\/19.9.0', 'Access-Control-Allow-Origin': '*', 'Access-Control-Allow-Credentials': 'true')>\nget response from http:\/\/www.httpbin.org\/delay\/5 response <ClientResponse(http:\/\/www.httpbin.org\/delay\/5) [200 OK]>\n<CIMultiDictProxy('Date': 'Mon, 06 Dec 2021 06:21:30 GMT', 'Content-Type': 'application\/json', 'Content-Length': '367', 'Connection': 'keep-alive', 'Server': 'gunicorn\/19.9.0', 'Access-Control-Allow-Origin': '*', 'Access-Control-Allow-Credentials': 'true')>\n5.479228973388672<\/code><\/pre>\n\n\n\u8fd9\u91cc\u6211\u4eec\u4f7f\u7528\u4e86await\uff0c\u5176\u540e\u8ddf\u7740get\u65b9\u6cd5\u3002\u5728\u6267\u884c\u534f\u7a0b\u65f6\uff0c\u5982\u679c\u9047\u5230\u4e86await\uff0c\u5c31\u4f1a\u5c06\u5f53\u524d\u534f\u7a0b\u6302\u8d77\uff0c\u8f6c\u800c\u6267\u884c\u5176\u4ed6\u534f\u7a0b\uff0c\u76f4\u5230\u5176\u4ed6\u534f\u7a0b\u4e5f\u6302\u8d77\u6216\u6267\u884c\u5b8c\u6bd5\uff0c\u5728\u6267\u884c\u4e0b\u4e00\u4e2a\u534f\u7a0b\u3002<\/p>\n\n\n
await \u540e\u9762\u53ea\u80fd\u8ddf\u5f02\u6b65\u7a0b\u5e8f\u6216\u6709__await__\u5c5e\u6027\u7684\u5bf9\u8c61\uff0c\u56e0\u4e3a\u5f02\u6b65\u7a0b\u5e8f\u4e0e\u4e00\u822c\u7a0b\u5e8f\u4e0d\u540c\u3002 <\/strong><\/p>\n\n\n\u8fd9\u4e5f\u5c31\u662f\u4e3a\u4ec0\u4e48await session.get(url)\u540e\u90fd\u8981\u8fdb\u884cawait\u58f0\u660e\u3002\u8fd9\u91cc\u662f\u5982\u4f55\u8fd0\u884c\u7684\u5462\uff1f\u5f53\u7a0b\u5e8f\u7b2c\u4e00\u6b21\u8fd0\u884c\u5230await get(url)\uff0c\u8be5\u4efb\u52a1\u4f1a\u88ab\u6302\u8d77\uff0c\u540c\u65f6\u7531\u4e8eget()\u5e76\u975e\u662f\u4e00\u4e2a\u963b\u585e\u4efb\u52a1\uff0c\u53c8\u4f1a\u88ab\u7acb\u523b\u5524\u9192\uff0c\u968f\u540e\u521b\u5efaClientSession\uff0c\u6267\u884csession.get\u8bf7\u6c42\uff0c\u968f\u540e\u88ab\u6302\u8d77\uff08\u56e0\u4e3asession.get\u662f\u963b\u585e\u7684\uff0c\u4e14\u8bf7\u6c42\u9700\u8981\u8017\u65f6\u5f88\u4e45\uff0c\u6240\u4ee5\u6ca1\u6709\u88ab\u5524\u9192\uff09\u3002\u968f\u540e\u4e8b\u4ef6\u5faa\u73af\u4f1a\u7ee7\u7eed\u5bfb\u627e\u672a\u88ab\u6302\u8d77\u7684\u534f\u7a0b\u7ee7\u7eed\u8fd0\u884c\uff0c\u4e8e\u662f\u6267\u884c\u7b2c\u4e8c\u4e2atask\uff0c\u4ee5\u6b64\u7c7b\u63a8\u3002\u76f4\u81f3\u6700\u540e\u4e00\u4e2atask\u4e5f\u88ab\u6302\u8d77\uff0c\u53ea\u597d\u7b49\u5f85\u3002\u76f4\u81f3\u8bf7\u6c42\u6709\u54cd\u5e94\uff08\u8fd4\u56de\uff09\uff0ctask\u88ab\u5524\u9192\u7ee7\u7eed\u6267\u884c\uff0c\u8f93\u51fa\u7ed3\u679c\u3002<\/p>\n\n\n
\u540c\u65f6\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u901a\u8fc7aiohttp.ClientTimeout\u5b9a\u4e49\u8d85\u65f6\u65f6\u95f4\uff0caiohttp.Semaphore\u5b9a\u4e49\u6700\u5927\u5e76\u53d1\u6570\u91cf\u7b49\u3002<\/p>\n\n\n
\u5b9e\u6218\uff1ahttps:\/\/spa5.scrape.center\/<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6700\u8fd1\u5d14\u5e86\u624d\u524d\u8f88\u7b2c\u4e8c\u7248\u7f51\u7edc\u722c\u866b\u5b9e\u6218\u51fa\u6765\u4e86\uff0c\u8d76\u7d27\u4e70\u4e86\u4e2a\u7b7e\u540d\u7248\u7684\u819c\u62dc\u4e00\u4e0b\uff0c\u63a5\u4e0b\u6765\u4e00\u6bb5\u65f6\u95f4\u5bf9\u4e8e\u4e66\u4e2d\u6240\u8bb2\u8ff0\u7684\u6280 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[12],"tags":[],"views":3125,"_links":{"self":[{"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/posts\/4032"}],"collection":[{"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/comments?post=4032"}],"version-history":[{"count":0,"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/posts\/4032\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/media?parent=4032"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/categories?post=4032"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/tags?post=4032"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}