<\/p>\n
'''\r\n\u751f\u6210\u5668\r\n\r\n\u5229\u7528\u8fed\u4ee3\u5668\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u6bcf\u6b21\u8fed\u4ee3\u83b7\u53d6\u6570\u636e\uff08\u901a\u8fc7next()\u65b9\u6cd5\uff09\u65f6\u6309\u7167\u7279\u5b9a\u7684\u89c4\u5f8b\u8fdb\u884c\u751f\u6210\u3002\r\n\u4f46\u662f\u6211\u4eec\u5728\u5b9e\u73b0\u4e00\u4e2a\u8fed\u4ee3\u5668\u65f6\uff0c\u5173\u4e8e\u5f53\u524d\u8fed\u4ee3\u5230\u7684\u72b6\u6001\u9700\u8981\u6211\u4eec\u81ea\u5df1\u8bb0\u5f55\uff0c\u8fdb\u800c\u624d\u80fd\u6839\u636e\u5f53\u524d\u72b6\u6001\u751f\u6210\u4e0b\u4e00\u4e2a\u6570\u636e\u3002\r\n\r\n\u4e3a\u4e86\u8fbe\u5230\u8bb0\u5f55\u5f53\u524d\u72b6\u6001\uff0c\u5e76\u914d\u5408next()\u51fd\u6570\u8fdb\u884c\u8fed\u4ee3\u4f7f\u7528\uff0c\u6211\u4eec\u53ef\u4ee5\u91c7\u7528\u66f4\u7b80\u4fbf\u7684\u8bed\u6cd5\uff0c\u5373\u751f\u6210\u5668(generator)\r\n\u751f\u6210\u5668\u662f\u4e00\u7c7b\u7279\u6b8a\u7684\u8fed\u4ee3\u5668\u3002\r\n'''\r\n\r\nimport sys\r\nimport time\r\n\r\n\r\nl = [x**2 for x in range(10)]\r\nprint(l)\r\n\r\ng = (x**2 for x in range(10))\r\nprint(g)\r\n\r\n'''\r\n>>> [0, 1, 4, 9, 16, 25, 36, 49, 64, 81]\r\n>>> <generator object <genexpr> at 0x0000029D827E6A98>\r\n\r\n\u521b\u5efa L \u548c G \u7684\u533a\u522b\u4ec5\u5728\u4e8e\u6700\u5916\u5c42\u7684 [ ] \u548c ( ) \uff0c L \u662f\u4e00\u4e2a\u5217\u8868\uff0c\u800c G \u662f\u4e00\u4e2a\u751f\u6210\u5668\u3002\r\n\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u6253\u5370\u51fa\u5217\u8868L\u7684\u6bcf\u4e00\u4e2a\u5143\u7d20\uff0c\u800c\u5bf9\u4e8e\u751f\u6210\u5668G\uff0c\u6211\u4eec\u53ef\u4ee5\u6309\u7167\u8fed\u4ee3\u5668\u7684\u4f7f\u7528\u65b9\u6cd5\u6765\u4f7f\u7528\uff0c\u5373\u53ef\u4ee5\u901a\u8fc7next()\u51fd\u6570\u3001for\u5faa\u73af\u3001list()\u7b49\u65b9\u6cd5\u4f7f\u7528\u3002\r\n'''\r\n\r\nprint(next(g))\r\nprint(next(g))\r\n'''\r\n>>> 0\r\n>>> 1\r\n'''\r\n\r\nfor n in g:\r\n print(n)\r\n\r\n\r\n'''\r\nyield\r\n\r\n\u5728\u4f7f\u7528\u751f\u6210\u5668\u5b9e\u73b0\u7684\u65b9\u5f0f\u4e2d\uff0c\u6211\u4eec\u5c06\u539f\u672c\u5728\u8fed\u4ee3\u5668__next__\u65b9\u6cd5\u4e2d\u5b9e\u73b0\u7684\u57fa\u672c\u903b\u8f91\u653e\u5230\u4e00\u4e2a\u51fd\u6570\u4e2d\u6765\u5b9e\u73b0\uff0c\u4f46\u662f\u5c06\u6bcf\u6b21\u8fed\u4ee3\u8fd4\u56de\u6570\u503c\u7684return\u6362\u6210\u4e86yield\uff0c\u6b64\u65f6\u65b0\u5b9a\u4e49\u7684\u51fd\u6570\u4fbf\u4e0d\u518d\u662f\u51fd\u6570\uff0c\u800c\u662f\u4e00\u4e2a\u751f\u6210\u5668\u4e86\u3002\r\n\u7b80\u5355\u6765\u8bf4\uff1a\u53ea\u8981\u5728def\u4e2d\u6709yield\u5173\u952e\u5b57\u7684 \u5c31\u79f0\u4e3a \u751f\u6210\u5668\r\n'''\r\n\r\ndef fib(n):\r\n current = 0\r\n num1, num2 = 0, 1\r\n while current < n:\r\n num = num1\r\n num1, num2 = num2, num1 + num2\r\n current += 1\r\n yield num\r\n \r\n return 'success...'\r\n\r\nprint('fib:')\r\nf = fib(6)\r\nfor n in f:\r\n print(n)\r\n\r\n'''\r\n\u4f46\u662f\u7528for\u5faa\u73af\u8c03\u7528generator\u65f6\uff0c\u53d1\u73b0\u62ff\u4e0d\u5230generator\u7684return\u8bed\u53e5\u7684\u8fd4\u56de\u503c\u3002\r\n\u5982\u679c\u60f3\u8981\u62ff\u5230\u8fd4\u56de\u503c\uff0c\u5fc5\u987b\u6355\u83b7StopIteration\u9519\u8bef\uff0c\u8fd4\u56de\u503c\u5305\u542b\u5728StopIteration\u7684value\u4e2d\uff1a\r\n\r\nwhile True:\r\n try:\r\n x = next(f)\r\n print(f\"value:{x}\")\r\n except StopIteration as e:\r\n print(f\"\u751f\u6210\u5668\u8fd4\u56de\u503c:{e.value}\")\r\n break\r\n\r\n'''\r\n\r\n# \u751f\u6210\u5668\u548c\u5217\u8868\u5bf9\u6bd4\r\nstart_time = time.perf_counter()\r\nl = [i for i in range(2, 10001, 2)]\r\ncost_time = time.perf_counter() - start_time\r\nprint(f\"list\u521b\u5efa\u65f6\u95f4\uff1a{cost_time}\")\r\nprint(f\"list\u5185\u5b58\u5f00\u9500\uff1a{sys.getsizeof(l)}\u5b57\u8282\")\r\n\r\nstart_time1 = time.perf_counter()\r\ng = (i for i in range(2, 10001, 2))\r\ncost_time1 = time.perf_counter() - start_time1\r\nprint(f\"\u751f\u6210\u5668\u521b\u5efa\u65f6\u95f4\uff1a{cost_time1}\")\r\nprint(f\"\u751f\u6210\u5668\u5185\u5b58\u5f00\u9500\uff1a{sys.getsizeof(g)}\u5b57\u8282\")\r\n\r\n'''\r\n>>> list\u521b\u5efa\u65f6\u95f4\uff1a0.0001462\r\n>>> list\u5185\u5b58\u5f00\u9500\uff1a43040\u5b57\u8282\r\n>>> \u751f\u6210\u5668\u521b\u5efa\u65f6\u95f4\uff1a3.6000000000000333e-06\r\n>>> \u751f\u6210\u5668\u5185\u5b58\u5f00\u9500\uff1a88\u5b57\u8282\r\n'''\r\n\r\n'''\r\nsend\u5524\u9192\r\n'''\r\ndef gen():\r\n i = 0\r\n while i < 5:\r\n temp = yield i\r\n print(temp)\r\n i += 1\r\nprint('send\uff1a')\r\nA = gen()\r\nprint(next(A))\r\nprint(A.send('haha'))\r\nprint(next(A))\r\nprint(A.send('heihei'))\r\n\r\n'''\r\n>>> 0\r\n>>> haha\r\n>>> 1\r\n>>> None\r\n>>> 2\r\n>>> heihei\r\n>>> 3\r\n'''<\/pre>\n <\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
\u751f\u6210\u5668\u662f\u4e00\u7c7b\u7279\u6b8a\u7684\u8fed\u4ee3\u5668\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"_links":{"self":[{"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/posts\/198"}],"collection":[{"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/comments?post=198"}],"version-history":[{"count":1,"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/posts\/198\/revisions"}],"predecessor-version":[{"id":199,"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/posts\/198\/revisions\/199"}],"wp:attachment":[{"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/media?parent=198"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/categories?post=198"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/tags?post=198"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}