{"id":1287,"date":"2022-08-19T14:56:09","date_gmt":"2022-08-19T06:56:09","guid":{"rendered":"http:\/\/175.24.184.226\/?p=1287"},"modified":"2022-08-19T14:56:09","modified_gmt":"2022-08-19T06:56:09","slug":"python%e7%94%9f%e6%88%90%e5%99%a8%e4%bc%a0%e5%8f%82%e6%95%b0%e5%8f%8a%e8%bf%94%e5%9b%9e%e5%80%bc%e5%8e%9f%e7%90%86%e8%a7%a3%e6%9e%90","status":"publish","type":"post","link":"\/?p=1287","title":{"rendered":"Python\u751f\u6210\u5668\u4f20\u53c2\u6570\u53ca\u8fd4\u56de\u503c\u539f\u7406\u89e3\u6790"},"content":{"rendered":"

\u4e00.\u751f\u6210\u5668\u7b80\u4ecb<\/h2>\n

\u5728python\u4e2d,\u5e26yield\u7684\u65b9\u6cd5\u4e0d\u518d\u662f\u666e\u901a\u65b9\u6cd5,\u800c\u662f\u751f\u6210\u5668,\u5b83\u7684\u6267\u884c\u987a\u5e8f\u4e0d\u540c\u4e0e\u666e\u901a\u65b9\u6cd5.<\/p>\n

\u666e\u901a\u65b9\u6cd5\u7684\u6267\u884c\u662f\u4ece\u5934\u5230\u5c3e,\u6700\u540ereturn\u8fd4\u56de,\u6216\u8005\u6ca1\u6709\u8fd4\u56de\u503c<\/p>\n

\u751f\u6210\u5668\u662f\u5230yield\u5c31\u8fd4\u56deyield\u4e4b\u540e\u7684\u503c,\u7136\u540e\u963b\u585e,\u7b49\u5f85next()\/send()\u7ee7\u7eed\u8c03\u8d77\u751f\u6210\u5668<\/p>\n

\u4e8c.next()\/send()\u7684\u5f02\u540c:<\/h2>\n

next()\/send()\u90fd\u53ef\u4ee5\u8c03\u8d77\u751f\u6210\u5668<\/p>\n

next()\u53ea\u80fd\u8c03\u8d77\u751f\u6210\u5668\u8fd4\u56de\u503c,send()\u8fd8\u53ef\u4ee5\u5bf9\u751f\u6210\u5668\u8fdb\u884c\u4f20\u53c2\u6570,\u4e0e\u6b63\u5e38\u7684\u7406\u89e3\u4e0d\u540c,yield\u8868\u8fbe\u5f0f\u5de6\u4fa7\u7684\u503c\u662fsend()\u65b9\u6cd5\u4f20\u8fdb\u6765\u7684\u53c2\u6570<\/p>\n

\u8fd8\u6709\u4e00\u4e2a\u6709\u610f\u601d\u7684\u70b9,\u7b2c\u4e00\u6b21send()\u7684\u65f6\u5019\u8981\u6c42\u53ea\u80fdsend(None)<\/p>\n

\u4e09.\u751f\u6210\u5668\u7684\u6267\u884c\u987a\u5e8f<\/h2>\n

\u5728yield\u8fd9\u4e00\u884c\u4ee3\u7801\u7684\u6267\u884c\u903b\u8f91\u662f\u8fd9\u6837\u7684,\u7b49\u53f7\u53f3\u8fb9\u7684yield r\u5148\u6267\u884c,\u5c06r\u8fd4\u56de,\u963b\u585e\u2026<\/p>\n

\u7b49\u5230\u4e0b\u6b21\u751f\u6210\u5668\u518d\u88ab\u8c03\u8d77\u7684\u65f6\u5019,yield\u628a\u4f20\u5165\u7684\u53c2\u6570\u7ed9n,\u518d\u7ee7\u7eed\u6267\u884c\u4e0b\u9762\u7684\u4ee3\u7801,\u77e5\u9053yield\u7ee7\u7eed\u8fd4\u56de\u2026<\/p>\n

\u4ee3\u7801\u793a\u4f8b<\/h2>\n
def consumer(): \n  r = '' \n  while True: \n    n = yield r \n    if not n: \n      return \n    print('[CONSUMER] Consuming %s...' % n) \n    r = '200 OK' \n\ndef produce(c): \n  c.send(None) \n  n = 0 \n  while n < 5: \n    n = n + 1 \n    print('[PRODUCER] Producing %s...' % n) \n    r = c.send(n) \n    print('[PRODUCER] Consumer return: %s' % r) \n  c.close() \n\n=================================================\n\nIn [31]: c=consumer()                                                      \n\nIn [32]: c.send(None)                                                      \nOut[32]: ''\n\nIn [33]: c.send(1)                                                       \n[CONSUMER] Consuming 1...\nOut[33]: '200 OK'\n\nIn [34]: c.send(2)                                                       \n[CONSUMER] Consuming 2...\nOut[34]: '200 OK'<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u4e00.\u751f\u6210\u5668\u7b80\u4ecb \u5728python\u4e2d,\u5e26yield\u7684\u65b9\u6cd5\u4e0d\u518d\u662f\u666e\u901a\u65b9\u6cd5,\u800c\u662f\u751f\u6210\u5668,\u5b83\u7684\u6267\u884c\u987a\u5e8f\u4e0d\u540c\u4e0e\u666e\u901a\u65b9\u6cd5. \u666e\u901a\u65b9\u6cd5\u7684\u6267\u884c\u662f\u4ece\u5934\u5230\u5c3e,   \u2026 …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[34],"tags":[16,90],"_links":{"self":[{"href":"\/index.php?rest_route=\/wp\/v2\/posts\/1287"}],"collection":[{"href":"\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1287"}],"version-history":[{"count":1,"href":"\/index.php?rest_route=\/wp\/v2\/posts\/1287\/revisions"}],"predecessor-version":[{"id":1288,"href":"\/index.php?rest_route=\/wp\/v2\/posts\/1287\/revisions\/1288"}],"wp:attachment":[{"href":"\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1287"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1287"},{"taxonomy":"post_tag","embeddable":true,"href":"\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1287"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}