{"id":205061,"date":"2025-05-29T15:32:39","date_gmt":"2025-05-29T07:32:39","guid":{"rendered":"https:\/\/server.hk\/cnblog\/205061\/"},"modified":"2025-05-29T15:32:39","modified_gmt":"2025-05-29T07:32:39","slug":"python-%e4%b8%ad%e7%9a%84-eval-%e5%87%bd%e6%95%b0%e4%b8%ba%e4%bd%95%e4%bc%9a%e4%ba%a7%e7%94%9f%e5%a5%87%e5%a6%99%e7%9a%84%e7%bb%93%e6%9e%9c%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/205061\/","title":{"rendered":"Python \u4e2d\u7684 eval \u51fd\u6570\u4e3a\u4f55\u4f1a\u4ea7\u751f\u5947\u5999\u7684\u7ed3\u679c\uff1f"},"content":{"rendered":"

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

Python \u4e2d\u7684 eval \u51fd\u6570\u4e3a\u4f55\u4f1a\u4ea7\u751f\u5947\u5999\u7684\u7ed3\u679c\uff1f<\/h1>\n

\u77e5\u8bc6\u70b9\u638c\u63e1\u4e86\uff0c\u8fd8\u9700\u8981\u4e0d\u65ad\u7ec3\u4e60\u624d\u80fd\u719f\u7ec3\u8fd0\u7528\u3002\u4e0b\u9762\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u4e2a\u6587\u7ae0\u5f00\u53d1\u5b9e\u6218\uff0c\u624b\u628a\u624b\u6559\u5927\u5bb6\u5b66\u4e60\u300aPython \u4e2d\u7684 eval \u51fd\u6570\u4e3a\u4f55\u4f1a\u4ea7\u751f\u5947\u5999\u7684\u7ed3\u679c\uff1f\u300b\uff0c\u5728\u5b9e\u73b0\u529f\u80fd\u7684\u8fc7\u7a0b\u4e2d\u4e5f\u5e26\u5927\u5bb6\u91cd\u65b0\u6e29\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6e29\u6545\u800c\u77e5\u65b0\uff0c\u56de\u5934\u770b\u770b\u8bf4\u4e0d\u5b9a\u53c8\u6709\u4e0d\u4e00\u6837\u7684\u611f\u609f\uff01<\/p>\n

<\/p>\n

py\u4e2d\u7684eval\u51fd\u6570\u7684\u5947\u5999\u7ed3\u679c\u63ed\u79d8<\/strong><\/p>\n

eval\u51fd\u6570\u5728python\u4e2d\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u4f46\u6709\u65f6\u5b83\u53ef\u80fd\u4f1a\u4ea7\u751f\u4ee4\u4eba\u610f\u5916\u7684\u7ed3\u679c\u3002\u8ba9\u6211\u4eec\u901a\u8fc7\u51e0\u4e2a\u793a\u4f8b\u6765\u63a2\u7a76eval\u51fd\u6570\u662f\u5982\u4f55\u5de5\u4f5c\u7684\u3002<\/p>\n

\u793a\u4f8b1<\/strong><\/p>\n

s2 = eval(\"12+45\" + \"12\")\nprint(s2)<\/pre>\n
\u7ed3\u679c\uff1a4524<\/p>\n
\u4e3a\u4ec0\u4e48\u662f4524\uff1f<\/strong><\/p>\n
eval\u51fd\u6570\u7684\u8ba1\u7b97\u5206\u4e24\u6b65\u8fdb\u884c\uff1a<\/p>\n
    \n
  1. \u5c06 “12+45” + “12” \u8fde\u63a5\u8d77\u6765\uff0c\u5f97\u5230 “12+4512″\u3002<\/li>\n
  2. \u5bf9 “12+4512” \u5e94\u7528eval\uff0c\u5f97\u5230 4524\uff08\u5373 12 + 4524\uff09\u3002<\/li>\n<\/ol>\n
    \u793a\u4f8b2<\/strong><\/p>\n
    s = eval(\"1+2\" + \"10\")\nprint(s)<\/pre>\n
    \u7ed3\u679c\uff1a211<\/p>\n
    \u4e3a\u4ec0\u4e48\u662f211\uff1f<\/strong><\/p>\n
    \u867d\u7136\u4ee3\u7801\u4e0e\u793a\u4f8b1\u7c7b\u4f3c\uff0c\u4f46\u7ed3\u679c\u5374\u4e0d\u540c\uff1a<\/p>\n
      \n
    1. \u5c06 “1+2” + “10” \u8fde\u63a5\u8d77\u6765\uff0c\u5f97\u5230 “1+210″\u3002<\/li>\n
    2. \u5bf9 “1+210” \u5e94\u7528eval\uff0c\u5f97\u5230 211\uff08\u5373 1 + 210\uff09\u3002<\/li>\n<\/ol>\n
      \u56e0\u6b64\uff0c\u5728\u4f7f\u7528eval\u51fd\u6570\u65f6\uff0c\u52a1\u5fc5\u6ce8\u610f\u64cd\u4f5c\u6570\u7684\u7c7b\u578b\u548c\u8fde\u63a5\u65b9\u5f0f\uff0c\u4ee5\u907f\u514d\u610f\u5916\u7684\u7ed3\u679c\u3002<\/p>\n
      \u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6587\u7ae0\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n","protected":false},"excerpt":{"rendered":"
      Python \u4e2d\u7684 eval \u51fd...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-205061","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205061","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=205061"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205061\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=205061"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=205061"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=205061"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}