{"id":384,"date":"2025-01-12T14:58:51","date_gmt":"2025-01-12T06:58:51","guid":{"rendered":"http:\/\/sqtcw.cn\/?p=384"},"modified":"2025-01-12T14:58:51","modified_gmt":"2025-01-12T06:58:51","slug":"%e4%bd%bf%e7%94%a8-enumerate-%e5%87%bd%e6%95%b0%e9%81%8d%e5%8e%86%e5%88%97%e8%a1%a8%ef%bc%8c%e5%90%8c%e6%97%b6%e5%be%97%e5%88%b0%e7%b4%a2%e5%bc%95%e5%92%8c%e5%85%83%e7%b4%a0%e5%80%bc","status":"publish","type":"post","link":"http:\/\/www.cnitw.com\/?p=384","title":{"rendered":"\u4f7f\u7528\u00a0enumerate\u00a0\u51fd\u6570\u904d\u5386\u5217\u8868\uff0c\u540c\u65f6\u5f97\u5230\u7d22\u5f15\u548c\u5143\u7d20\u503c"},"content":{"rendered":"\n<p>\u5728 Python \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u5206\u8fa8\u5217\u8868\u4e2d\u5b57\u7b26\u4e32\u548c\u6570\u5b57\u7684\u7d22\u5f15\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>my_list = &#91;'apple', 123, 'banana', 456]\n\n# \u901a\u8fc7\u5faa\u73af\u904d\u5386\u5217\u8868\u5e76\u5224\u65ad\u5143\u7d20\u7c7b\u578b\nfor index, element in enumerate(my_list):\n    if isinstance(element, str):\n        print(f'\u7d22\u5f15 {index} \u5bf9\u5e94\u5b57\u7b26\u4e32\u5143\u7d20\uff1a{element}')\n    elif isinstance(element, int):\n        print(f'\u7d22\u5f15 {index} \u5bf9\u5e94\u6570\u5b57\u5143\u7d20\uff1a{element}')<\/code><\/pre>\n\n\n\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u4f7f\u7528 <code>enumerate<\/code> \u51fd\u6570\u904d\u5386\u5217\u8868\uff0c\u540c\u65f6\u5f97\u5230\u7d22\u5f15\u548c\u5143\u7d20\u503c\u3002\u7136\u540e\u901a\u8fc7 <code>isinstance<\/code> \u51fd\u6570\u5224\u65ad\u5143\u7d20\u7684\u7c7b\u578b\u662f\u5b57\u7b26\u4e32\u8fd8\u662f\u6574\u6570\uff0c\u4ece\u800c\u5206\u8fa8\u51fa\u4e0d\u540c\u7c7b\u578b\u5143\u7d20\u7684\u7d22\u5f15\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u5728 Python \u4e2d\uff0c\u5f53\u4f7f\u7528 <code>for index, element in enumerate(my_list)<\/code> \u8fd9\u6837\u7684\u8bed\u53e5\u65f6\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>index<\/code> \u8868\u793a\u5f53\u524d\u5143\u7d20\u5728\u5217\u8868\u4e2d\u7684\u7d22\u5f15\u4f4d\u7f6e\uff0c\u5b83\u662f\u4e00\u4e2a\u6574\u6570\uff0c\u4ece 0 \u5f00\u59cb\u8ba1\u6570\uff0c\u8868\u793a\u5143\u7d20\u5728\u5217\u8868\u4e2d\u7684\u987a\u5e8f\u4f4d\u7f6e\u3002\u4f8b\u5982\uff0c\u5982\u679c\u5217\u8868\u4e2d\u6709\u56db\u4e2a\u5143\u7d20\uff0c\u7d22\u5f15\u5c06\u4f9d\u6b21\u4e3a 0\u30011\u30012\u30013\u3002<\/li>\n\n\n\n<li><code>element<\/code> \u8868\u793a\u5217\u8868\u4e2d\u7684\u5f53\u524d\u5143\u7d20\uff0c\u53ef\u4ee5\u662f\u4efb\u4f55\u6570\u636e\u7c7b\u578b\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u6574\u6570\u3001\u5217\u8868\u3001\u5b57\u5178\u7b49\u3002\u5728\u6bcf\u6b21\u5faa\u73af\u8fed\u4ee3\u4e2d\uff0c<code>element<\/code> \u4f1a\u88ab\u8d4b\u503c\u4e3a\u5217\u8868\u4e2d\u7684\u4e00\u4e2a\u5143\u7d20\uff0c\u4ee5\u4fbf\u5bf9\u5176\u8fdb\u884c\u64cd\u4f5c\u6216\u5904\u7406\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>my_list = &#91;10, 'hello', 20.5]\nfor index, element in enumerate(my_list):\n    print(f'\u7d22\u5f15 {index}: {element}')<\/code><\/pre>\n\n\n\n<p>\u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u7d22\u5f15 0: 10\n\u7d22\u5f15 1: hello\n\u7d22\u5f15 2: 20.5<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 Python \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u5206\u8fa8\u5217\u8868\u4e2d\u5b57\u7b26\u4e32\u548c\u6570\u5b57\u7684\u7d22\u5f15\uff1a \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u4f7f\u7528 enumerate \u51fd\u6570\u904d\u5386\u5217\u8868\uff0c\u540c\u65f6\u5f97\u5230\u7d22\u5f15\u548c\u5143\u7d20\u503c\u3002\u7136\u540e\u901a\u8fc7 isinstance \u51fd\u6570\u5224\u65ad\u5143\u7d20\u7684\u7c7b\u578b\u662f\u5b57\u7b26\u4e32\u8fd8\u662f\u6574\u6570\uff0c\u4ece\u800c\u5206\u8fa8\u51fa\u4e0d\u540c\u7c7b\u578b\u5143\u7d20\u7684\u7d22\u5f15\u3002 \u5728 Python \u4e2d\uff0c\u5f53\u4f7f\u7528 for index, element in enumerate(my_list) \u8fd9\u6837\u7684\u8bed\u53e5\u65f6\uff1a \u4f8b\u5982\uff1a \u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-384","post","type-post","status-publish","format-standard","hentry","category-python"],"_links":{"self":[{"href":"http:\/\/www.cnitw.com\/index.php?rest_route=\/wp\/v2\/posts\/384","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.cnitw.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.cnitw.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.cnitw.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.cnitw.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=384"}],"version-history":[{"count":0,"href":"http:\/\/www.cnitw.com\/index.php?rest_route=\/wp\/v2\/posts\/384\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.cnitw.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=384"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.cnitw.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=384"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.cnitw.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=384"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}