{"id":259536,"date":"2024-05-15T13:09:12","date_gmt":"2024-05-15T05:09:12","guid":{"rendered":""},"modified":"2024-05-15T13:09:20","modified_gmt":"2024-05-15T05:09:20","slug":"%e5%86%99%e4%bb%a3%e7%a0%81%ef%bc%8c%e5%a6%82%e4%bd%95%e8%ae%a9%e5%80%92%e6%95%b0%e4%b8%8d%e4%b8%ba0%ef%bc%8cs1-3%e8%be%93%e5%87%ba%ef%bc%9as0","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/259536.html","title":{"rendered":"\u5199\u4ee3\u7801\uff0c\u5982\u4f55\u8ba9\u5012\u6570\u4e0d\u4e3a0\uff0cs=1\/3\u8f93\u51fa\uff1as=0"},"content":{"rendered":"

\"\u5199\u4ee3\u7801\uff0c\u5982\u4f55\u8ba9\u5012\u6570\u4e0d\u4e3a0\uff0cs=1\/3\u8f93\u51fa\uff1as=0\"<\/p>\n

\u5728\u7f16\u7a0b\u4e2d\uff0c\u786e\u4fdd\u4e00\u4e2a\u6570\u503c\u8868\u8fbe\u5f0f\u7684\u7279\u5b9a\u7ed3\u679c\uff0c\u5c24\u5176\u662f\u6d6e\u70b9\u8fd0\u7b97\u7ed3\u679c\u4e3a0<\/code>\uff0c\u9700\u8981\u7cbe\u786e\u5730\u63a7\u5236\u548c\u7406\u89e3\u6d6e\u70b9\u6570\u7684\u8868\u793a\u4e0e\u8fd0\u7b97\u3002\u5bf9\u4e8e\u7ed9\u5b9a\u7684\u95ee\u9898\uff0c\u786e\u4fdd\u5012\u6570\u4e0d\u4e3a0<\/code>\u5e76\u8ba9s=1\/3<\/code>\u7684\u8f93\u51fa\u4e3as=0<\/code>\uff0c\u53ef\u4ee5\u901a\u8fc7\u56db\u820d\u4e94\u5165\u3001\u8bbe\u7f6e\u9608\u503c\u6bd4\u8f83\u3001\u786e\u4fdd\u9664\u6570\u4e0d\u4e3a\u96f6<\/strong>\u6765\u5b9e\u73b0\u3002<\/p>\n<\/p>\n

\u5728\u8fd9\u4e2a\u7279\u5b9a\u793a\u4f8b\u4e2d\uff0c\u5173\u952e\u5728\u4e8e\u7406\u89e3\u8ba1\u7b97\u673a\u4e2d\u6d6e\u70b9\u6570\u7684\u8868\u793a\u662f\u8fd1\u4f3c\u503c\uff0c\u5e76\u4e0d\u603b\u662f\u80fd\u7cbe\u786e\u8868\u793a\u50cf1\/3\u8fd9\u6837\u7684\u5206\u6570\u3002\u56e0\u6b64\uff0c\u8981\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\uff0c\u6211\u4eec\u53ef\u4ee5\u91c7\u7528\u5c06\u503c\u8fd1\u4f3c\u4e3a\u6700\u63a5\u8fd1\u7684\u6574\u6570\u6216\u8005\u662f\u8bbe\u7f6e\u4e00\u4e2a\u5c0f\u7684\u9608\u503c\uff0c\u51e1\u662f\u4f4e\u4e8e\u8fd9\u4e2a\u9608\u503c\u7684\u7ed3\u679c\uff0c\u6211\u4eec\u5c31\u5c06\u5176\u89c6\u4f5c0<\/code>\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u7406\u89e3\u6d6e\u70b9\u6570\u8868\u793a<\/h3>\n<\/p>\n

\u8ba1\u7b97\u673a\u4e2d\u7684\u6d6e\u70b9\u6570<\/strong>\u662f\u901a\u8fc7\u5c06\u6570\u503c\u5206\u89e3\u4e3a\u57fa\u6570\u548c\u6307\u6570\u6765\u8868\u793a\u7684\uff0c\u8fd9\u610f\u5473\u7740\u5e76\u4e0d\u662f\u6240\u6709\u7684\u5c0f\u6570\u503c\u90fd\u80fd\u88ab\u7cbe\u786e\u8868\u793a\u3002\u4f8b\u5982\uff0c1\/3<\/code>\u5728\u8ba1\u7b97\u673a\u4e2d\u5c31\u65e0\u6cd5\u7cbe\u786e\u8868\u793a\uff0c\u53d6\u800c\u4ee3\u4e4b\u7684\u662f\u4e00\u4e2a\u63a5\u8fd1\u4f46\u4e0d\u5b8c\u5168\u76f8\u540c\u7684\u503c\u3002<\/p>\n<\/p>\n

\u9996\u5148\uff0c\u4e86\u89e3\u6d6e\u70b9\u6570\u7684\u9650\u5236<\/strong>\u5bf9\u7f16\u7a0b\u5c24\u4e3a\u91cd\u8981\u3002\u6d6e\u70b9\u6570\u7684\u7cbe\u5ea6\u9650\u5236\u6e90\u81ea\u5176\u5b58\u50a8\u65b9\u5f0f\uff0c\u8ba1\u7b97\u673a\u4f7f\u7528\u6709\u9650\u7684\u4f4d\u6570\u6765\u5b58\u50a8\u8fd9\u4e9b\u6570\u5b57\uff0c\u56e0\u6b64\uff0c\u4e0d\u53ef\u80fd\u7cbe\u786e\u5730\u8868\u793a\u6240\u6709\u5c0f\u6570\uff0c\u5c24\u5176\u662f\u90a3\u4e9b\u65e0\u9650\u5faa\u73af\u5c0f\u6570\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u56db\u820d\u4e94\u5165\u65b9\u6cd5<\/h3>\n<\/p>\n

\u4e00\u79cd\u5b9e\u73b0\u60f3\u8981\u7684\u8f93\u51fa\uff08\u59821\/3<\/code>\u8fd1\u4f3c\u4e3a0<\/code>\uff09\u7684\u65b9\u6cd5\u662f\u901a\u8fc7\u56db\u820d\u4e94\u5165\u5230\u6307\u5b9a\u7684\u5c0f\u6570\u4f4d\u6570\u3002\u7136\u800c\uff0c\u7b80\u5355\u5730\u56db\u820d\u4e94\u5165\u4e0d\u603b\u662f\u6709\u6548\uff0c\u56e0\u4e3a\u67d0\u4e9b\u503c\u56db\u820d\u4e94\u5165\u540e\u53ef\u80fd\u4ecd\u4e0d\u4e3a\u96f6\u3002<\/p>\n<\/p>\n

\u8fdb\u884c\u56db\u820d\u4e94\u5165<\/strong>\u901a\u5e38\u6d89\u53ca\u5230\u8bbe\u7f6e\u4e00\u4e2a\u8bef\u5dee\u5bb9\u5fcd\u9608\u503c\uff0c\u5982\u679c\u4e00\u4e2a\u6570\u503c\u5c0f\u4e8e\u8fd9\u4e2a\u9608\u503c\uff0c\u5219\u53ef\u4ee5\u5c06\u5176\u56db\u820d\u4e94\u5165\u52300\u3002\u5728\u8bb8\u591a\u7f16\u7a0b\u8bed\u8a00\u4e2d\uff0c\u5982Python\uff0c\u63d0\u4f9b\u4e86\u5185\u7f6e\u7684\u56db\u820d\u4e94\u5165\u65b9\u6cd5\uff0c\u4f46\u8981\u6ce8\u610f\u9009\u62e9\u9002\u5f53\u7684\u5c0f\u6570\u4f4d\u6570\uff0c\u4f7f\u5f97\u56db\u820d\u4e94\u5165\u80fd\u6709\u6548\u5730\u5c06\u503c\u7ea6\u5316\u4e3a0<\/code>\u3002<\/p>\n<\/p>\n

\u4e09\u3001\u8bbe\u7f6e\u9608\u503c\u6bd4\u8f83<\/h3>\n<\/p>\n

\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u901a\u8fc7\u8bbe\u7f6e\u4e00\u4e2a\u975e\u5e38\u5c0f\u7684\u9608\u503c<\/strong>\uff0c\u5e76\u5c06\u6240\u6709\u5c0f\u4e8e\u8fd9\u4e00\u9608\u503c\u7684\u6570\u89c6\u4e3a0<\/code>\u3002\u8fd9\u53ef\u901a\u8fc7\u7f16\u5199\u4e00\u4e2a\u7b80\u5355\u7684\u6761\u4ef6\u8bed\u53e5\u6765\u5b9e\u73b0\uff0c\u5176\u4e2d\u6bd4\u8f83\u6570\u503c\u662f\u5426\u5c0f\u4e8e\u8bbe\u5b9a\u7684\u9608\u503c\u3002<\/p>\n<\/p>\n

# \u793a\u4f8b\uff1a\u5c06\u63a5\u8fd1\u4e8e0\u7684\u503c\u89c6\u4e3a0<\/p>\n
threshold = 1e-5 # \u4f8b\u5982\u8bbe\u7f6e\u9608\u503c\u4e3a0.00001<\/p>\n
value = 1\/3<\/p>\n
if abs(value) < threshold:<\/p>\n
    value = 0<\/p>\n
print(f's={value}')<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u56db\u3001\u786e\u4fdd\u9664\u6570\u4e0d\u4e3a\u96f6<\/h3>\n<\/p>\n
\u786e\u4fdd\u9664\u6570\u4e0d\u4e3a\u96f6\u662f\u9632\u6b62\u65e0\u9650\u5927\u6570\u6216\u4e0d\u786e\u5b9a\u6570\u5b66\u8fd0\u7b97\u7ed3\u679c\u7684\u57fa\u672c\u65b9\u6cd5\u3002\u867d\u7136\u5728s=1\/3<\/code>\u7684\u60c5\u5883\u4e0b\uff0c\u9664\u6570\u5df2\u660e\u786e\u4e0d\u4e3a\u96f6\uff08\u53733\uff09\uff0c\u4f46\u662f\u5728\u5176\u4ed6\u53ef\u80fd\u5bfc\u81f4\u9664\u6570\u4e3a\u96f6\u7684\u60c5\u5883\u4e0b\uff0c\u8fd9\u4e00\u6b65\u9aa4\u53d8\u5f97\u5c24\u4e3a\u91cd\u8981\u3002<\/p>\n<\/p>\n
\u907f\u514d\u9664\u6570\u4e3a\u96f6<\/strong>\u7684\u65b9\u6cd5\u5305\u62ec\u5728\u6267\u884c\u9664\u6cd5\u4e4b\u524d\u68c0\u67e5\u9664\u6570\u662f\u5426\u4e3a\u96f6\uff0c\u5e76\u5728\u662f\u7684\u60c5\u51b5\u4e0b\u91c7\u53d6\u9002\u5f53\u7684\u9519\u8bef\u5904\u7406\u63aa\u65bd\uff0c\u6bd4\u5982\u8fd4\u56de\u4e00\u4e2a\u9519\u8bef\u4fe1\u606f\u6216\u4f7f\u7528\u4e00\u4e2a\u9ed8\u8ba4\u503c\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u5b9e\u8df5\u6848\u4f8b<\/h3>\n<\/p>\n
\u6700\u540e\uff0c\u8ba9\u6211\u4eec\u7efc\u5408\u4e0a\u8ff0\u65b9\u6cd5\uff0c\u901a\u8fc7\u4e00\u4e2a\u5b9e\u9645\u7684\u7f16\u7a0b\u5b9e\u4f8b\u6765\u786e\u4fdds=1\/3<\/code>\u7684\u8f93\u51fa\u7ed3\u679c\u4e3as=0<\/code>\u3002<\/p>\n<\/p>\n
def approximate_zero(value, threshold=1e-5):<\/p>\n
    """\u8fd1\u4f3c\u5c06\u5c0f\u4e8e\u9608\u503c\u7684\u6570\u503c\u89c6\u4e3a0"""<\/p>\n
    return 0 if abs(value) < threshold else value<\/p>\n
s = approximate_zero(1\/3)<\/p>\n
print(f's={s}')<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u4e2a\u65b9\u6cd5\u7ed3\u5408\u4e86\u4e0a\u6587\u8ba8\u8bba\u7684\u9608\u503c\u6bd4\u8f83\u548c\u56db\u820d\u4e94\u5165\u7684\u6982\u5ff5\uff0c\u63d0\u4f9b\u4e86\u4e00\u4e2a\u7075\u6d3b\u7684\u5de5\u5177\u6765\u5c06\u7279\u5b9a\u7684\u8fd0\u7b97\u7ed3\u679c\u8fd1\u4f3c\u4e3a0\u3002\u8fd9\u79cd\u65b9\u6cd5\u65e2\u7b80\u5355\u53c8\u6709\u6548\uff0c\u80fd\u591f\u5904\u7406\u5305\u62ec1\/3<\/code>\u5728\u5185\u7684\u5404\u79cd\u6570\u503c\u8ba1\u7b97\u573a\u666f\u3002<\/p>\n<\/p>\n
\u603b\u4e4b<\/strong>\uff0c\u786e\u4fdd\u5012\u6570\u4e0d\u4e3a\u96f6\u5e76\u5b9e\u73b0\u7279\u5b9a\u7684\u8f93\u51fa\u7ed3\u679c\u6d89\u53ca\u5bf9\u6d6e\u70b9\u6570\u8868\u793a\u548c\u8fd0\u7b97\u7684\u6df1\u5165\u7406\u89e3\uff0c\u4ee5\u53ca\u9002\u5f53\u7684\u6570\u503c\u5904\u7406\u65b9\u6cd5\u3002\u4ee5\u4e0a\u4ecb\u7ecd\u7684\u7b56\u7565\u90fd\u662f\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\u7684\u6709\u6548\u9014\u5f84\uff0c\u5b83\u4eec\u63d0\u4f9b\u4e86\u7075\u6d3b\u7684\u89e3\u51b3\u65b9\u6848\u6765\u5904\u7406\u8ba1\u7b97\u4e2d\u9047\u5230\u7684\u5404\u79cd\u6570\u503c\u7279\u6b8a\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
\u4e3a\u4e86\u4f7f\u5012\u6570\u4e0d\u4e3a0\uff0c\u60a8\u53ef\u4ee5\u8fdb\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a<\/strong><\/p>\n
1. \u4fee\u6539\u5206\u6bcd<\/strong>
\n\u5728\u4ee3\u7801\u4e2d\uff0c\u5c06\u5206\u6bcd\u7684\u503c\u4fee\u6539\u4e3a\u4e00\u4e2a\u4e0d\u7b49\u4e8e0\u7684\u6570\u5b57\uff0c\u4f8b\u5982\u4fee\u6539\u4e3a1\/3\u65f6\uff0c\u53ef\u4ee5\u5c06\u5206\u6bcd\u4fee\u6539\u4e3a10\uff0c\u5373s=1\/10\u3002\u8fd9\u6837\u5c31\u53ef\u4ee5\u786e\u4fdd\u5012\u6570\u4e0d\u4e3a0\u3002<\/p>\n
2. \u4f7f\u7528\u6761\u4ef6\u5224\u65ad<\/strong>
\n\u60a8\u53ef\u4ee5\u5728\u8ba1\u7b97\u524d\u6dfb\u52a0\u4e00\u4e2a\u6761\u4ef6\u5224\u65ad\u8bed\u53e5\uff0c\u4ee5\u786e\u4fdd\u5206\u6bcd\u4e0d\u4e3a0\u3002\u4f8b\u5982\uff0c\u4f7f\u7528if\u8bed\u53e5\u5224\u65ad\u5206\u6bcd\u662f\u5426\u4e3a0\uff0c\u5982\u679c\u4e3a0\uff0c\u5219\u5c06\u5176\u4fee\u6539\u4e3a\u4e00\u4e2a\u4e0d\u4e3a0\u7684\u503c\u3002\u8fd9\u6837\uff0c\u4f60\u5c31\u53ef\u4ee5\u907f\u514d\u5012\u6570\u4e3a0\u3002<\/p>\n
3. \u5f02\u5e38\u5904\u7406<\/strong>
\n\u60a8\u53ef\u4ee5\u4f7f\u7528\u5f02\u5e38\u5904\u7406\u673a\u5236\u6765\u5904\u7406\u5206\u6bcd\u4e3a0\u7684\u60c5\u51b5\u3002\u5728\u8ba1\u7b97\u5012\u6570\u4e4b\u524d\uff0c\u4f7f\u7528try-except\u8bed\u53e5\uff0c\u5c06\u5206\u6bcd\u4e3a0\u7684\u60c5\u51b5\u4f5c\u4e3a\u5f02\u5e38\u60c5\u51b5\u8fdb\u884c\u5904\u7406\u3002\u5728except\u5757\u4e2d\uff0c\u53ef\u4ee5\u5199\u5165\u5904\u7406\u4ee3\u7801\uff0c\u4f8b\u5982\u5c06\u5206\u6bcd\u4fee\u6539\u4e3a\u4e00\u4e2a\u4e0d\u4e3a0\u7684\u503c\u3002\u8fd9\u6837\uff0c\u5373\u4f7f\u4ee3\u7801\u4e2d\u51fa\u73b0\u5206\u6bcd\u4e3a0\u7684\u60c5\u51b5\uff0c\u4e5f\u53ef\u4ee5\u6b63\u5e38\u5904\u7406\u800c\u4e0d\u62a5\u9519\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728\u7f16\u7a0b\u4e2d\uff0c\u786e\u4fdd\u4e00\u4e2a\u6570\u503c\u8868\u8fbe\u5f0f\u7684\u7279\u5b9a\u7ed3\u679c\uff0c\u5c24\u5176\u662f\u6d6e\u70b9\u8fd0\u7b97\u7ed3\u679c\u4e3a0\uff0c\u9700\u8981\u7cbe\u786e\u5730\u63a7\u5236\u548c\u7406\u89e3\u6d6e\u70b9\u6570\u7684\u8868\u793a\u4e0e\u8fd0\u7b97\u3002\u5bf9\u4e8e\u7ed9 […]","protected":false},"author":3,"featured_media":259546,"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\/259536"}],"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=259536"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/259536\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/259546"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=259536"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=259536"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=259536"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}