{"id":1114216,"date":"2025-01-08T17:55:08","date_gmt":"2025-01-08T09:55:08","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1114216.html"},"modified":"2025-01-08T17:55:11","modified_gmt":"2025-01-08T09:55:11","slug":"python%e5%a6%82%e4%bd%95%e8%a1%a8%e8%be%be%e4%b8%80%e4%b8%aafor%e5%be%aa%e7%8e%af%e9%97%b4%e9%9a%94","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1114216.html","title":{"rendered":"python\u5982\u4f55\u8868\u8fbe\u4e00\u4e2afor\u5faa\u73af\u95f4\u9694"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25075450\/646a7c8b-fe29-4ae6-93d2-55505a5ad22b.webp\" alt=\"python\u5982\u4f55\u8868\u8fbe\u4e00\u4e2afor\u5faa\u73af\u95f4\u9694\" \/><\/p>\n<p><p> <strong>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528range\u51fd\u6570\u3001\u679a\u4e3e\u3001\u5217\u8868\u5207\u7247\u3001itertools\u6a21\u5757\u6765\u8868\u8fbe\u4e00\u4e2afor\u5faa\u73af\u95f4\u9694\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u7684\u89e3\u91ca\uff1a<\/strong><\/p>\n<\/p>\n<p><p>\u5728Python\u7f16\u7a0b\u4e2d\uff0cfor\u5faa\u73af\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u63a7\u5236\u7ed3\u6784\uff0c\u7528\u4e8e\u8fed\u4ee3\u4e00\u4e2a\u5e8f\u5217\uff08\u5982\u5217\u8868\u3001\u5143\u7ec4\u6216\u5b57\u7b26\u4e32\uff09\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u3002\u5f53\u9700\u8981\u5728for\u5faa\u73af\u4e2d\u6307\u5b9a\u95f4\u9694\u65f6\uff0c\u53ef\u4ee5\u91c7\u7528\u591a\u79cd\u65b9\u6cd5\u3002\u5e38\u7528\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528range()\u51fd\u6570\u3001\u679a\u4e3e\uff08enumerate\uff09\u4ee5\u53ca\u5217\u8868\u5207\u7247\uff08list slicing\uff09\u3002\u5176\u4e2d\uff0c\u4f7f\u7528range()\u51fd\u6570\u662f\u6700\u5e38\u89c1\u548c\u6700\u76f4\u89c2\u7684\u65b9\u5f0f\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<\/p>\n<p><p><strong>1. \u4f7f\u7528range()\u51fd\u6570<\/strong><\/p>\n<\/p>\n<p><p>Python\u7684range()\u51fd\u6570\u53ef\u4ee5\u751f\u6210\u4e00\u4e2a\u6307\u5b9a\u95f4\u9694\u7684\u6570\u5b57\u5e8f\u5217\u3002\u5b83\u5177\u6709\u4e09\u4e2a\u53c2\u6570\uff1astart\u3001stop\u548cstep\u3002start\u662f\u8d77\u59cb\u503c\uff0cstop\u662f\u7ed3\u675f\u503c\uff08\u4e0d\u5305\u62ec\uff09\uff0cstep\u662f\u6b65\u957f\uff08\u95f4\u9694\u503c\uff09\u3002\u901a\u8fc7\u8bbe\u7f6estep\u53c2\u6570\uff0c\u53ef\u4ee5\u5728for\u5faa\u73af\u4e2d\u6307\u5b9a\u95f4\u9694\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">for i in range(0, 10, 2):<\/p>\n<p>    print(i)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4ee5\u4e0a\u4ee3\u7801\u5c06\u8f93\u51fa0, 2, 4, 6, 8\u3002\u8fd9\u91cc\u7684step\u503c\u4e3a2\uff0c\u8868\u793a\u6bcf\u6b21\u5faa\u73af\u8fed\u4ee3\u95f4\u9694\u4e3a2\u3002<\/p>\n<\/p>\n<p><h3>\u8be6\u7ec6\u89e3\u91carange()\u51fd\u6570<\/h3>\n<\/p>\n<p><p>range()\u51fd\u6570\u7684\u8bed\u6cd5\u4e3arange(start, stop, step)\u3002start\u53c2\u6570\u662f\u5e8f\u5217\u7684\u8d77\u59cb\u503c\uff08\u5305\u542b\uff09\uff0cstop\u53c2\u6570\u662f\u5e8f\u5217\u7684\u7ed3\u675f\u503c\uff08\u4e0d\u5305\u542b\uff09\uff0cstep\u53c2\u6570\u662f\u6b65\u957f\u3002\u6b65\u957f\u53ef\u4ee5\u4e3a\u6b63\u6570\u6216\u8d1f\u6570\uff0c\u6b63\u6570\u65f6\u8868\u793a\u9012\u589e\uff0c\u8d1f\u6570\u65f6\u8868\u793a\u9012\u51cf\u3002\u4f8b\u5982\uff0crange(10, 0, -2)\u5c06\u751f\u621010, 8, 6, 4, 2\u3002<\/p>\n<\/p>\n<p><h3>\u793a\u4f8b\u4ee3\u7801<\/h3>\n<\/p>\n<p><pre><code class=\"language-python\"># \u9012\u589e\u793a\u4f8b<\/p>\n<p>for i in range(1, 10, 3):<\/p>\n<p>    print(i)  # \u8f93\u51fa\uff1a1, 4, 7<\/p>\n<h2><strong>\u9012\u51cf\u793a\u4f8b<\/strong><\/h2>\n<p>for i in range(10, 0, -2):<\/p>\n<p>    print(i)  # \u8f93\u51fa\uff1a10, 8, 6, 4, 2<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u6ce8\u610f\u4e8b\u9879<\/h3>\n<\/p>\n<p><p>\u5728\u4f7f\u7528range()\u51fd\u6570\u65f6\uff0c\u9700\u8981\u786e\u4fddstart\u548cstop\u53c2\u6570\u7684\u503c\u8bbe\u7f6e\u5408\u7406\uff0c\u4ee5\u907f\u514d\u751f\u6210\u7a7a\u5e8f\u5217\u6216\u65e0\u9650\u5faa\u73af\u3002\u6b64\u5916\uff0cstep\u53c2\u6570\u4e0d\u80fd\u4e3a0\uff0c\u5426\u5219\u4f1a\u5f15\u53d1ValueError\u5f02\u5e38\u3002<\/p>\n<\/p>\n<p><p><strong>2. \u4f7f\u7528enumerate()\u51fd\u6570<\/strong><\/p>\n<\/p>\n<p><p>enumerate()\u51fd\u6570\u7528\u4e8e\u5728\u8fed\u4ee3\u5e8f\u5217\u65f6\u63d0\u4f9b\u7d22\u5f15\u3002\u901a\u8fc7\u7ed3\u5408\u7d22\u5f15\u548c\u6761\u4ef6\u5224\u65ad\uff0c\u53ef\u4ee5\u5b9e\u73b0\u6307\u5b9a\u95f4\u9694\u7684\u5faa\u73af\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">my_list = [&#39;a&#39;, &#39;b&#39;, &#39;c&#39;, &#39;d&#39;, &#39;e&#39;]<\/p>\n<p>for index, value in enumerate(my_list):<\/p>\n<p>    if index % 2 == 0:<\/p>\n<p>        print(value)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4ee5\u4e0a\u4ee3\u7801\u5c06\u8f93\u51fa&#39;a&#39;, &#39;c&#39;, &#39;e&#39;\u3002\u8fd9\u91cc\u7684\u6761\u4ef6\u5224\u65adindex % 2 == 0\u7528\u4e8e\u9009\u62e9\u95f4\u9694\u4e3a2\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n<p><h3>\u8be6\u7ec6\u89e3\u91caenumerate()\u51fd\u6570<\/h3>\n<\/p>\n<p><p>enumerate()\u51fd\u6570\u7684\u8bed\u6cd5\u4e3aenumerate(iterable, start=0)\u3002iterable\u662f\u53ef\u8fed\u4ee3\u5bf9\u8c61\uff0cstart\u53c2\u6570\u662f\u7d22\u5f15\u8d77\u59cb\u503c\uff0c\u9ed8\u8ba4\u4e3a0\u3002enumerate()\u51fd\u6570\u8fd4\u56de\u4e00\u4e2a\u679a\u4e3e\u5bf9\u8c61\uff0c\u6bcf\u6b21\u8fed\u4ee3\u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u7d22\u5f15\u548c\u503c\u7684\u5143\u7ec4\u3002<\/p>\n<\/p>\n<p><h3>\u793a\u4f8b\u4ee3\u7801<\/h3>\n<\/p>\n<p><pre><code class=\"language-python\">my_list = [&#39;apple&#39;, &#39;banana&#39;, &#39;cherry&#39;, &#39;date&#39;, &#39;elderberry&#39;]<\/p>\n<p>for index, value in enumerate(my_list, start=1):<\/p>\n<p>    if index % 2 == 1:<\/p>\n<p>        print(value)  # \u8f93\u51fa\uff1aapple, cherry, elderberry<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u6ce8\u610f\u4e8b\u9879<\/h3>\n<\/p>\n<p><p>\u5728\u4f7f\u7528enumerate()\u51fd\u6570\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u7d22\u5f15\u7684\u8d77\u59cb\u503c\u548c\u6761\u4ef6\u5224\u65ad\u7684\u6b63\u786e\u6027\uff0c\u4ee5\u786e\u4fdd\u95f4\u9694\u5faa\u73af\u7684\u51c6\u786e\u6027\u3002<\/p>\n<\/p>\n<p><p><strong>3. \u4f7f\u7528\u5217\u8868\u5207\u7247\uff08List Slicing\uff09<\/strong><\/p>\n<\/p>\n<p><p>\u5217\u8868\u5207\u7247\u662f\u4e00\u79cd\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4e8e\u4ece\u5217\u8868\u4e2d\u63d0\u53d6\u5b50\u5e8f\u5217\u3002\u901a\u8fc7\u6307\u5b9a\u6b65\u957f\u53c2\u6570\uff0c\u53ef\u4ee5\u5b9e\u73b0\u95f4\u9694\u9009\u62e9\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">my_list = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]<\/p>\n<p>sliced_list = my_list[::2]<\/p>\n<p>for value in sliced_list:<\/p>\n<p>    print(value)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4ee5\u4e0a\u4ee3\u7801\u5c06\u8f93\u51fa0, 2, 4, 6, 8\u3002\u8fd9\u91cc\u7684\u5207\u7247\u64cd\u4f5cmy_list[::2]\u63d0\u53d6\u4e86\u539f\u5217\u8868\u4e2d\u95f4\u9694\u4e3a2\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n<p><h3>\u8be6\u7ec6\u89e3\u91ca\u5217\u8868\u5207\u7247<\/h3>\n<\/p>\n<p><p>\u5217\u8868\u5207\u7247\u7684\u8bed\u6cd5\u4e3alist[start:stop:step]\u3002start\u53c2\u6570\u662f\u8d77\u59cb\u7d22\u5f15\uff08\u5305\u542b\uff09\uff0cstop\u53c2\u6570\u662f\u7ed3\u675f\u7d22\u5f15\uff08\u4e0d\u5305\u542b\uff09\uff0cstep\u53c2\u6570\u662f\u6b65\u957f\u3002\u6b65\u957f\u53ef\u4ee5\u4e3a\u6b63\u6570\u6216\u8d1f\u6570\uff0c\u6b63\u6570\u65f6\u8868\u793a\u4ece\u5de6\u5230\u53f3\u63d0\u53d6\uff0c\u8d1f\u6570\u65f6\u8868\u793a\u4ece\u53f3\u5230\u5de6\u63d0\u53d6\u3002<\/p>\n<\/p>\n<p><h3>\u793a\u4f8b\u4ee3\u7801<\/h3>\n<\/p>\n<p><pre><code class=\"language-python\"># \u9012\u589e\u793a\u4f8b<\/p>\n<p>my_list = [&#39;a&#39;, &#39;b&#39;, &#39;c&#39;, &#39;d&#39;, &#39;e&#39;]<\/p>\n<p>print(my_list[1:5:2])  # \u8f93\u51fa\uff1a[&#39;b&#39;, &#39;d&#39;]<\/p>\n<h2><strong>\u9012\u51cf\u793a\u4f8b<\/strong><\/h2>\n<p>my_list = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]<\/p>\n<p>print(my_list[9:0:-3])  # \u8f93\u51fa\uff1a9, 6, 3<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u6ce8\u610f\u4e8b\u9879<\/h3>\n<\/p>\n<p><p>\u5728\u4f7f\u7528\u5217\u8868\u5207\u7247\u65f6\uff0c\u9700\u8981\u786e\u4fdd\u7d22\u5f15\u548c\u6b65\u957f\u53c2\u6570\u7684\u8bbe\u7f6e\u5408\u7406\uff0c\u4ee5\u907f\u514d\u8d85\u51fa\u5217\u8868\u8303\u56f4\u6216\u83b7\u53d6\u7a7a\u5e8f\u5217\u3002\u6b64\u5916\uff0c\u5217\u8868\u5207\u7247\u4f1a\u751f\u6210\u4e00\u4e2a\u65b0\u7684\u5217\u8868\uff0c\u53ef\u80fd\u4f1a\u589e\u52a0\u5185\u5b58\u5f00\u9500\u3002<\/p>\n<\/p>\n<p><p><strong>4. \u4f7f\u7528itertools\u6a21\u5757<\/strong><\/p>\n<\/p>\n<p><p>itertools\u6a21\u5757\u63d0\u4f9b\u4e86\u4e00\u4e9b\u9ad8\u6548\u7684\u8fed\u4ee3\u5668\u751f\u6210\u51fd\u6570\u3002\u901a\u8fc7\u4f7f\u7528itertools.islice()\u51fd\u6570\uff0c\u53ef\u4ee5\u5b9e\u73b0\u6307\u5b9a\u95f4\u9694\u7684\u8fed\u4ee3\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import itertools<\/p>\n<p>my_list = [&#39;a&#39;, &#39;b&#39;, &#39;c&#39;, &#39;d&#39;, &#39;e&#39;]<\/p>\n<p>for value in itertools.islice(my_list, 0, None, 2):<\/p>\n<p>    print(value)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4ee5\u4e0a\u4ee3\u7801\u5c06\u8f93\u51fa&#39;a&#39;, &#39;c&#39;, &#39;e&#39;\u3002\u8fd9\u91cc\u7684itertools.islice()\u51fd\u6570\u7528\u4e8e\u4ece\u539f\u5217\u8868\u4e2d\u95f4\u9694\u63d0\u53d6\u5143\u7d20\u3002<\/p>\n<\/p>\n<p><h3>\u8be6\u7ec6\u89e3\u91caitertools.islice()\u51fd\u6570<\/h3>\n<\/p>\n<p><p>itertools.islice()\u51fd\u6570\u7684\u8bed\u6cd5\u4e3aitertools.islice(iterable, start, stop, step)\u3002iterable\u662f\u53ef\u8fed\u4ee3\u5bf9\u8c61\uff0cstart\u53c2\u6570\u662f\u8d77\u59cb\u7d22\u5f15\uff08\u5305\u542b\uff09\uff0cstop\u53c2\u6570\u662f\u7ed3\u675f\u7d22\u5f15\uff08\u4e0d\u5305\u542b\uff09\uff0cstep\u53c2\u6570\u662f\u6b65\u957f\u3002itertools.islice()\u51fd\u6570\u8fd4\u56de\u4e00\u4e2a\u8fed\u4ee3\u5668\uff0c\u53ef\u4ee5\u6309\u6307\u5b9a\u95f4\u9694\u63d0\u53d6\u5143\u7d20\u3002<\/p>\n<\/p>\n<p><h3>\u793a\u4f8b\u4ee3\u7801<\/h3>\n<\/p>\n<p><pre><code class=\"language-python\">import itertools<\/p>\n<h2><strong>\u9012\u589e\u793a\u4f8b<\/strong><\/h2>\n<p>my_list = [&#39;apple&#39;, &#39;banana&#39;, &#39;cherry&#39;, &#39;date&#39;, &#39;elderberry&#39;]<\/p>\n<p>for value in itertools.islice(my_list, 1, 5, 2):<\/p>\n<p>    print(value)  # \u8f93\u51fa\uff1abanana, date<\/p>\n<h2><strong>\u9012\u51cf\u793a\u4f8b<\/strong><\/h2>\n<p>my_list = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]<\/p>\n<p>for value in itertools.islice(my_list[::-1], 0, None, 3):<\/p>\n<p>    print(value)  # \u8f93\u51fa\uff1a9, 6, 3<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u6ce8\u610f\u4e8b\u9879<\/h3>\n<\/p>\n<p><p>\u5728\u4f7f\u7528itertools.islice()\u51fd\u6570\u65f6\uff0c\u9700\u8981\u786e\u4fdd\u7d22\u5f15\u548c\u6b65\u957f\u53c2\u6570\u7684\u8bbe\u7f6e\u5408\u7406\uff0c\u4ee5\u907f\u514d\u8d85\u51fa\u8303\u56f4\u3002\u6b64\u5916\uff0citertools.islice()\u51fd\u6570\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u8fed\u4ee3\u5668\uff0c\u800c\u4e0d\u662f\u5217\u8868\uff0c\u56e0\u6b64\u9700\u8981\u901a\u8fc7\u8fed\u4ee3\u5668\u8fdb\u884c\u8bbf\u95ee\u3002<\/p>\n<\/p>\n<p><p><strong>\u603b\u7ed3<\/strong><\/p>\n<\/p>\n<p><p>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528range\u51fd\u6570\u3001\u679a\u4e3e\u3001\u5217\u8868\u5207\u7247\u3001itertools\u6a21\u5757\u6765\u8868\u8fbe\u4e00\u4e2afor\u5faa\u73af\u95f4\u9694\u3002\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u4f18\u7f3a\u70b9\u548c\u9002\u7528\u573a\u666f\u3002\u4f7f\u7528range()\u51fd\u6570\u662f\u6700\u5e38\u89c1\u548c\u6700\u76f4\u89c2\u7684\u65b9\u5f0f\uff0c\u9002\u7528\u4e8e\u751f\u6210\u6570\u5b57\u5e8f\u5217\u3002enumerate()\u51fd\u6570\u9002\u7528\u4e8e\u5728\u8fed\u4ee3\u5e8f\u5217\u65f6\u63d0\u4f9b\u7d22\u5f15\u3002\u5217\u8868\u5207\u7247\u9002\u7528\u4e8e\u4ece\u5217\u8868\u4e2d\u63d0\u53d6\u5b50\u5e8f\u5217\u3002itertools\u6a21\u5757\u63d0\u4f9b\u4e86\u4e00\u4e9b\u9ad8\u6548\u7684\u8fed\u4ee3\u5668\u751f\u6210\u51fd\u6570\uff0c\u9002\u7528\u4e8e\u9700\u8981\u9ad8\u6548\u8fed\u4ee3\u7684\u573a\u666f\u3002\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u66f4\u597d\u5730\u5b9e\u73b0for\u5faa\u73af\u95f4\u9694\u7684\u529f\u80fd\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u521b\u5efa\u5e26\u6709\u95f4\u9694\u7684for\u5faa\u73af\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528<code>time.sleep()<\/code>\u51fd\u6570\u6765\u521b\u5efa\u4e00\u4e2a\u5e26\u6709\u95f4\u9694\u7684for\u5faa\u73af\u3002\u901a\u8fc7\u5728\u6bcf\u6b21\u5faa\u73af\u8fed\u4ee3\u540e\u8c03\u7528<code>time.sleep(\u95f4\u9694\u65f6\u95f4)<\/code>\uff0c\u53ef\u4ee5\u6709\u6548\u63a7\u5236\u5faa\u73af\u4e4b\u95f4\u7684\u65f6\u95f4\u95f4\u9694\u3002\u4f8b\u5982\uff1a  <\/p>\n<pre><code class=\"language-python\">import time\n\nfor i in range(5):\n    print(i)\n    time.sleep(1)  # \u6bcf\u6b21\u5faa\u73af\u95f4\u96941\u79d2\n<\/code><\/pre>\n<p><strong>\u53ef\u4ee5\u4f7f\u7528\u54ea\u4e9b\u65b9\u6cd5\u6765\u5b9e\u73b0for\u5faa\u73af\u7684\u95f4\u9694\uff1f<\/strong><br \/>\u9664\u4e86<code>time.sleep()<\/code>\uff0c\u8fd8\u6709\u5176\u4ed6\u65b9\u6cd5\u53ef\u4ee5\u63a7\u5236for\u5faa\u73af\u95f4\u9694\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528<code>threading.Timer<\/code>\u6765\u521b\u5efa\u4e00\u4e2a\u5b9a\u65f6\u5668\uff0c\u5728\u6bcf\u6b21\u8fed\u4ee3\u540e\u6267\u884c\u4e0b\u4e00\u4e2a\u64cd\u4f5c\u3002\u4e0d\u8fc7\uff0c\u4f7f\u7528<code>time.sleep()<\/code>\u662f\u6700\u7b80\u5355\u548c\u5e38\u7528\u7684\u65b9\u6cd5\u3002<\/p>\n<p><strong>\u5728for\u5faa\u73af\u4e2d\u5982\u4f55\u52a8\u6001\u8c03\u6574\u95f4\u9694\u65f6\u95f4\uff1f<\/strong><br \/>\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u4e00\u4e2a\u53d8\u91cf\u6765\u52a8\u6001\u8c03\u6574\u95f4\u9694\u65f6\u95f4\u3002\u5728\u6bcf\u6b21\u5faa\u73af\u4e2d\uff0c\u53ef\u4ee5\u6839\u636e\u7279\u5b9a\u6761\u4ef6\u66f4\u65b0\u8be5\u53d8\u91cf\u7684\u503c\uff0c\u4ece\u800c\u5b9e\u73b0\u4e0d\u540c\u7684\u95f4\u9694\u3002\u4f8b\u5982\uff1a  <\/p>\n<pre><code class=\"language-python\">import time\n\ninterval = 1  # \u521d\u59cb\u95f4\u9694\u4e3a1\u79d2\n\nfor i in range(5):\n    print(i)\n    time.sleep(interval)\n    if i == 2:  # \u5728\u7b2c\u4e09\u6b21\u5faa\u73af\u65f6\uff0c\u5c06\u95f4\u9694\u589e\u52a0\u52302\u79d2\n        interval = 2\n<\/code><\/pre>\n<p>\u8fd9\u6837\uff0c\u7b2c\u4e09\u6b21\u8fed\u4ee3\u540e\uff0c\u5faa\u73af\u95f4\u9694\u5c06\u53d8\u4e3a2\u79d2\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528range\u51fd\u6570\u3001\u679a\u4e3e\u3001\u5217\u8868\u5207\u7247\u3001itertools\u6a21\u5757\u6765\u8868\u8fbe\u4e00\u4e2afor\u5faa\u73af\u95f4\u9694\u3002\u4ee5\u4e0b [&hellip;]","protected":false},"author":3,"featured_media":1114230,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1114216"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1114216"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1114216\/revisions"}],"predecessor-version":[{"id":1114233,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1114216\/revisions\/1114233"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1114230"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1114216"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1114216"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1114216"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}