{"id":204301,"date":"2025-05-29T10:11:19","date_gmt":"2025-05-29T02:11:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/204301\/"},"modified":"2025-05-29T10:11:19","modified_gmt":"2025-05-29T02:11:19","slug":"%e5%a6%82%e4%bd%95%e5%88%a4%e6%96%ad%e7%94%a8%e6%88%b7%e8%be%93%e5%85%a5%e7%9a%84%e6%95%b0%e5%ad%97%e6%98%af%e5%90%a6%e5%ad%98%e5%9c%a8%e4%ba%8epython%e5%88%97%e8%a1%a8%e4%b8%ad%e5%ad%97%e5%85%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/204301\/","title":{"rendered":"\u5982\u4f55\u5224\u65ad\u7528\u6237\u8f93\u5165\u7684\u6570\u5b57\u662f\u5426\u5b58\u5728\u4e8ePython\u5217\u8868\u4e2d\u5b57\u5178\u7684\u67d0\u4e2avalue\u4e2d\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

\u5982\u4f55\u5224\u65ad\u7528\u6237\u8f93\u5165\u7684\u6570\u5b57\u662f\u5426\u5b58\u5728\u4e8ePython\u5217\u8868\u4e2d\u5b57\u5178\u7684\u67d0\u4e2avalue\u4e2d\uff1f<\/h1>\n

\u79ef\u7d2f\u77e5\u8bc6\uff0c\u80dc\u8fc7\u79ef\u84c4\u91d1\u94f6\uff01\u6bd5\u7adf\u5728\u6587\u7ae0\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4f1a\u9047\u5230\u5404\u79cd\u5404\u6837\u7684\u95ee\u9898\uff0c\u5f80\u5f80\u90fd\u662f\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u6ca1\u6709\u638c\u63e1\u597d\u800c\u5bfc\u81f4\u7684\uff0c\u56e0\u6b64\u57fa\u7840\u77e5\u8bc6\u70b9\u7684\u79ef\u7d2f\u662f\u5f88\u91cd\u8981\u7684\u3002\u4e0b\u9762\u672c\u6587\u300a\u5982\u4f55\u5224\u65ad\u7528\u6237\u8f93\u5165\u7684\u6570\u5b57\u662f\u5426\u5b58\u5728\u4e8ePython\u5217\u8868\u4e2d\u5b57\u5178\u7684\u67d0\u4e2avalue\u4e2d\uff1f\u300b\uff0c\u5c31\u5e26\u5927\u5bb6\u8bb2\u89e3\u4e00\u4e0b\u77e5\u8bc6\u70b9\uff0c\u82e5\u662f\u4f60\u5bf9\u672c\u6587\u611f\u5174\u8da3\uff0c\u6216\u8005\u662f\u60f3\u641e\u61c2\u5176\u4e2d\u67d0\u4e2a\u77e5\u8bc6\u70b9\uff0c\u5c31\u8bf7\u4f60\u7ee7\u7eed\u5f80\u4e0b\u770b\u5427~<\/p>\n

<\/p>\n

\u5728python\u5217\u8868\u7684\u5b57\u5178\u4e2d\u5224\u65ad\u7528\u6237\u8f93\u5165\u6570\u5b57\u662f\u5426\u5b58\u5728<\/strong><\/p>\n

\u63d0\u793a\u7528\u6237\u8f93\u5165\u4e00\u4e2a\u6570\u5b57\uff0c\u5982\u4f55\u5224\u65ad\u8be5\u6570\u5b57\u662f\u5426\u5728\u7ed9\u5b9a\u5217\u8868\u4e2d\u67d0\u4e2a\u5b57\u5178\u7684value\u4e2d\uff1f\u8be5\u5217\u8868\u4e2d\u6bcf\u4e2a\u5b57\u5178\u7684key\u76f8\u540c\u3002<\/p>\n

\u8003\u8651\u4ee5\u4e0b\u4ee3\u7801\u793a\u4f8b\uff1a<\/p>\n

user = [\n  {\"name\": \"Yang\", \"weight\": 55, \"height\": 172, \"ID\": 1},\n  {\"name\": \"Liu\", \"weight\": 54, \"height\": 171, \"ID\": 2},\n  {\"name\": \"Pan\", \"weight\": 52, \"height\": 170, \"ID\": 3}\n]\n\nQuery = int(input(\"\u8f93\u5165\u4e00\u4e2a\u6570\u5b57:\"))  # \u83b7\u53d6\u7528\u6237\u8f93\u5165\u7684\u6570\u5b57\n\n# \u904d\u5386\u5217\u8868\u4e2d\u7684\u5b57\u5178\uff0c\u5e76\u68c0\u67e5\u6bcf\u4e2a\u5b57\u5178\u4e2dvalue\u662f\u5426\u7b49\u4e8e\u8f93\u5165\u503c\nFlag = False\nfor item in user:\n  if Query == item['ID']:\n    Flag = True\n    break\n\nif Flag:\n  print(\"\u5b58\u5728\")\nelse:\n  print(\"\u4e0d\u5b58\u5728\")<\/pre>\n
\u8fd9\u6bb5\u4ee3\u7801\u901a\u8fc7\u8fed\u4ee3\u5217\u8868\u4e2d\u7684\u5b57\u5178\uff0c\u5e76\u5c06\u5176id\u503c\u4e0e\u7528\u6237\u8f93\u5165\u7684\u6570\u5b57\u8fdb\u884c\u6bd4\u8f83\uff0c\u4ece\u800c\u5224\u65ad\u662f\u5426\u5b58\u5728\u5339\u914d\u3002\u5982\u679c\u627e\u5230\u5339\u914d\uff0c\u5219\u8bbe\u7f6eflag\u53d8\u91cf\u4e3atrue\u5e76\u8df3\u51fa\u5faa\u73af\uff1b\u5426\u5219\uff0cflag\u4fdd\u6301\u4e3afalse\u3002<\/p>\n
\u6700\u540e\uff0c\u6839\u636eflag\u53d8\u91cf\u7684\u503c\uff0c\u7a0b\u5e8f\u6253\u5370\u6d88\u606f\u6765\u6307\u793a\u8f93\u5165\u7684\u6570\u5b57\u662f\u5426\u5b58\u5728\u4e8e\u5217\u8868\u4e2d\u3002<\/p>\n
\u672c\u7bc7\u5173\u4e8e\u300a\u5982\u4f55\u5224\u65ad\u7528\u6237\u8f93\u5165\u7684\u6570\u5b57\u662f\u5426\u5b58\u5728\u4e8ePython\u5217\u8868\u4e2d\u5b57\u5178\u7684\u67d0\u4e2avalue\u4e2d\uff1f\u300b\u7684\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\u5566\uff0c\u4f46\u662f\u5b66\u65e0\u6b62\u5883\uff0c\u60f3\u8981\u4e86\u89e3\u5b66\u4e60\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
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