{"id":603,"date":"2024-01-31T20:00:54","date_gmt":"2022-12-11T08:19:40","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/%e7%94%a8python%e6%a3%80%e6%9f%a5%e5%ad%97%e7%ac%a6%e4%b8%b2%e6%98%af%e5%90%a6%e5%8c%85%e5%90%ab%e5%8f%a6%e4%b8%80%e4%b8%aa%e5%ad%97%e7%ac%a6%e4%b8%b2%e3%80%82\/"},"modified":"2025-08-02T22:03:04","modified_gmt":"2025-08-02T14:03:04","slug":"%e7%94%a8python%e6%a3%80%e6%9f%a5%e5%ad%97%e7%ac%a6%e4%b8%b2%e6%98%af%e5%90%a6%e5%8c%85%e5%90%ab%e5%8f%a6%e4%b8%80%e4%b8%aa%e5%ad%97%e7%ac%a6%e4%b8%b2%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e7%94%a8python%e6%a3%80%e6%9f%a5%e5%ad%97%e7%ac%a6%e4%b8%b2%e6%98%af%e5%90%a6%e5%8c%85%e5%90%ab%e5%8f%a6%e4%b8%80%e4%b8%aa%e5%ad%97%e7%ac%a6%e4%b8%b2%e3%80%82\/","title":{"rendered":"Python\u6559\u7a0b\uff1a\u5982\u4f55\u9ad8\u6548\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u5305\u542b\u5b50\u5b57\u7b26\u4e32"},"content":{"rendered":"<p>\u5b57\u7b26\u4e32\u64cd\u4f5c\u662f\u4efb\u4f55\u7f16\u7a0b\u8bed\u8a00\u4e2d\u5e38\u89c1\u7684\u4efb\u52a1\u3002Python\u63d0\u4f9b\u4e86\u4e24\u79cd\u5e38\u89c1\u7684\u65b9\u6cd5\u6765\u68c0\u67e5\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u5305\u542b\u53e6\u4e00\u4e2a\u5b57\u7b26\u4e32\u3002<\/p>\n<h2>Python\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u5305\u542b\u53e6\u4e00\u4e2a\u5b57\u7b26\u4e32<\/h2>\n<p>Python\u5b57\u7b26\u4e32\u652f\u6301in\u8fd0\u7b97\u7b26\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5b83\u6765\u68c0\u67e5\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u662f\u53e6\u4e00\u4e2a\u5b57\u7b26\u4e32\u7684\u4e00\u90e8\u5206\u3002in\u8fd0\u7b97\u7b26\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre class=\"post-pre\"><code>sub in str\r\n<\/code><\/pre>\n<p>\u5982\u679c&#8221;sub&#8221;\u5b57\u7b26\u4e32\u662f&#8221;str&#8221;\u7684\u4e00\u90e8\u5206\uff0c\u5219\u8fd4\u56deTrue\uff0c\u5426\u5219\u8fd4\u56deFalse\u3002\u8ba9\u6211\u4eec\u770b\u4e00\u4e9b\u5728Python\u4e2d\u4f7f\u7528in\u8fd0\u7b97\u7b26\u7684\u4f8b\u5b50\u3002<\/p>\n<pre class=\"post-pre\"><code>str1 = '\u6211\u559c\u6b22Python\u7f16\u7a0b'\r\n\r\nstr2 = 'Python'\r\n\r\nstr3 = 'Java'\r\n\r\nprint(f'\"{str1}\" \u5305\u542b \"{str2}\" = {str2 in str1}')\r\nprint(f'\"{str1}\" \u5305\u542b \"{str2.lower()}\" = {str2.lower() in str1}')\r\nprint(f'\"{str1}\" \u5305\u542b \"{str3}\" = {str3 in str1}')\r\n\r\nif str2 in str1:\r\n    print(f'\"{str1}\" \u5305\u542b \"{str2}\"')\r\nelse:\r\n    print(f'\"{str1}\" \u4e0d\u5305\u542b \"{str2}\"')\r\n<\/code><\/pre>\n<p>\u8f93\u51fa\uff1a<\/p>\n<pre class=\"post-pre\"><code>\"\u6211\u559c\u6b22Python\u7f16\u7a0b\" \u5305\u542b \"Python\" = True\r\n\"\u6211\u559c\u6b22Python\u7f16\u7a0b\" \u5305\u542b \"python\" = False\r\n\"\u6211\u559c\u6b22Python\u7f16\u7a0b\" \u5305\u542b \"Java\" = False\r\n\"\u6211\u559c\u6b22Python\u7f16\u7a0b\" \u5305\u542b \"Python\"\r\n<\/code><\/pre>\n<div>\n                            <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65647968a4b2f92e6c72b2ad\/8-0.png\" class='post-images' alt=\"\u4f7f\u7528in\u8fd0\u7b97\u7b26\u68c0\u67e5Python\u5b57\u7b26\u4e32\u662f\u5426\u5305\u542b\u53e6\u4e00\u4e2a\u5b57\u7b26\u4e32\" title=\"\">\n                        <\/div>\n<p>\u5982\u679c\u4f60\u4e0d\u719f\u6089Python\u4e2d\u7684f\u524d\u7f00\u5b57\u7b26\u4e32\uff0c\u8fd9\u662fPython 3.6\u5f15\u5165\u7684\u4e00\u79cd\u65b0\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u65b9\u5f0f\u3002\u4f60\u53ef\u4ee5\u5728Python\u7684f\u5b57\u7b26\u4e32\u4e2d\u4e86\u89e3\u66f4\u591a\u76f8\u5173\u4fe1\u606f\u3002<\/p>\n<p>\u5f53\u6211\u4eec\u4f7f\u7528in\u8fd0\u7b97\u7b26\u65f6\uff0c\u5b83\u5728\u5185\u90e8\u8c03\u7528\u4e86__contains__()\u51fd\u6570\u3002\u6211\u4eec\u4e5f\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u8fd9\u4e2a\u51fd\u6570\uff0c\u4f46\u51fa\u4e8e\u53ef\u8bfb\u6027\u7684\u8003\u8651\uff0c\u5efa\u8bae\u4f7f\u7528in\u8fd0\u7b97\u7b26\u3002<\/p>\n<pre class=\"post-pre\"><code>s = 'abc'\r\n\r\nprint('s \u5305\u542b a =', s.__contains__('a'))\r\nprint('s \u5305\u542b A =', s.__contains__('A'))\r\nprint('s \u5305\u542b X =', s.__contains__('X'))\r\n<\/code><\/pre>\n<p>\u8f93\u51fa\uff1a<\/p>\n<pre class=\"post-pre\"><code>s \u5305\u542b a = True\r\ns \u5305\u542b A = False\r\ns \u5305\u542b X = False\r\n<\/code><\/pre>\n<h2>\u4f7f\u7528find()\u51fd\u6570\u6765\u68c0\u67e5\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u5305\u542b\u53e6\u4e00\u4e2a\u5b50\u5b57\u7b26\u4e32\u3002<\/h2>\n<p>\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u7684find()\u51fd\u6570\u6765\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u5305\u542b\u5b50\u5b57\u7b26\u4e32\u3002\u8be5\u51fd\u6570\u8fd4\u56de\u5b50\u5b57\u7b26\u4e32\u7b2c\u4e00\u6b21\u51fa\u73b0\u7684\u7d22\u5f15\u4f4d\u7f6e\uff0c\u5982\u679c\u6ca1\u6709\u627e\u5230\u5219\u8fd4\u56de-1\u3002<\/p>\n<pre class=\"post-pre\"><code>str1 = '\u6211\u559c\u6b22Python\u7f16\u7a0b'\r\n\r\nstr2 = 'Python'\r\n\r\nstr3 = 'Java'\r\n\r\nindex = str1.find(str2)\r\nif index != -1:\r\n    print(f'\"{str1}\" \u5305\u542b \"{str2}\"')\r\nelse:\r\n    print(f'\"{str1}\" \u4e0d\u5305\u542b \"{str2}\"')\r\n\r\nindex = str1.find(str3)\r\nif index != -1:\r\n    print(f'\"{str1}\" \u5305\u542b \"{str3}\"')\r\nelse:\r\n    print(f'\"{str1}\" \u4e0d\u5305\u542b \"{str3}\"')\r\n<\/code><\/pre>\n<p>\u8f93\u51fa\uff1a<\/p>\n<pre class=\"post-pre\"><code>\"\u6211\u559c\u6b22Python\u7f16\u7a0b\" \u5305\u542b \"Python\"\r\n\"\u6211\u559c\u6b22Python\u7f16\u7a0b\" \u4e0d\u5305\u542b \"Java\"\r\n<\/code><\/pre>\n<div>\n                            <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65647968a4b2f92e6c72b2ad\/19-0.png\" class='post-images' alt=\"Python\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u5305\u542b\u5b50\u5b57\u7b26\u4e32\" title=\"\">\n                        <\/div>\n<p>\u60a8\u53ef\u4ee5\u4ece\u6211\u4eec\u7684GitHub\u4ee3\u7801\u4ed3\u5e93\u4e2d\u68c0\u67e5\u5b8c\u6574\u7684Python\u811a\u672c\u548c\u66f4\u591aPython\u793a\u4f8b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b57\u7b26\u4e32\u64cd\u4f5c\u662f\u4efb\u4f55\u7f16\u7a0b\u8bed\u8a00\u4e2d\u5e38\u89c1\u7684\u4efb\u52a1\u3002Python\u63d0\u4f9b\u4e86\u4e24\u79cd\u5e38\u89c1\u7684\u65b9\u6cd5\u6765\u68c0\u67e5\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u5305\u542b\u53e6\u4e00\u4e2a\u5b57\u7b26\u4e32\u3002  [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1102,1439,280,190,184],"class_list":{"0":"post-603","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-uncategorized","7":"tag-python","10":"tag-190","11":"tag-184"},"yoast_head":"<!-- This site is optimized 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href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u7528python\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u5305\u542b\u53e6\u4e00\u4e2a\u5b57\u7b26\u4e32\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python\u6559\u7a0b\uff1a\u5982\u4f55\u9ad8\u6548\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u5305\u542b\u5b50\u5b57\u7b26\u4e32\" \/>\n<meta property=\"og:description\" content=\"\u672c\u6559\u7a0b\u8be6\u7ec6\u4ecb\u7ecd\u5728Python\u4e2d\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u5305\u542b\u5b50\u5b57\u7b26\u4e32\u7684\u591a\u79cd\u65b9\u6cd5\uff0c\u5305\u62ec\u4f7f\u7528in\u8fd0\u7b97\u7b26\u3001find()\u65b9\u6cd5\u3001index()\u51fd\u6570\u7b49\u3002\u901a\u8fc7\u5b9e\u7528\u4ee3\u7801\u793a\u4f8b\u548c\u8be6\u7ec6\u89e3\u91ca\uff0c\u5e2e\u52a9Python\u521d\u5b66\u8005\u548c\u8fdb\u9636\u5f00\u53d1\u8005\u638c\u63e1\u5b57\u7b26\u4e32\u64cd\u4f5c\u6280\u5de7\uff0c\u63d0\u9ad8\u7f16\u7a0b\u6548\u7387\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u7528python\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u5305\u542b\u53e6\u4e00\u4e2a\u5b57\u7b26\u4e32\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2022-12-11T08:19:40+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-02T14:03:04+00:00\" \/>\n<meta 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