{"id":949095,"date":"2024-12-27T00:09:45","date_gmt":"2024-12-26T16:09:45","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/949095.html"},"modified":"2024-12-27T00:09:47","modified_gmt":"2024-12-26T16:09:47","slug":"python-%e5%a6%82%e4%bd%95%e8%be%93%e5%85%a5%e5%b0%8f%e6%95%b0","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/949095.html","title":{"rendered":"python \u5982\u4f55\u8f93\u5165\u5c0f\u6570"},"content":{"rendered":"

\"python<\/p>\n

\u5728Python\u4e2d\u8f93\u5165\u5c0f\u6570\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528input()<\/code>\u51fd\u6570\u63a5\u6536\u7528\u6237\u8f93\u5165\u3001\u901a\u8fc7float()<\/code>\u51fd\u6570\u8fdb\u884c\u8f6c\u6362\u3001\u6ce8\u610f\u5f02\u5e38\u5904\u7406\u3002<\/strong>\u5728Python\u4e2d\uff0c\u5904\u7406\u5c0f\u6570\u8f93\u5165\u65f6\uff0c\u9996\u5148\u9700\u8981\u4ece\u7528\u6237\u83b7\u53d6\u8f93\u5165\uff0c\u901a\u5e38\u4f7f\u7528input()<\/code>\u51fd\u6570\uff0c\u7136\u540e\u5c06\u5176\u8f6c\u6362\u4e3a\u6d6e\u70b9\u6570\u4ee5\u786e\u4fdd\u8f93\u5165\u7684\u6570\u5b57\u53ef\u4ee5\u7528\u4e8e\u6570\u5b66\u8ba1\u7b97\u3002\u4e3a\u4e86\u786e\u4fdd\u8f93\u5165\u7684\u6709\u6548\u6027\uff0c\u5efa\u8bae\u4f7f\u7528\u5f02\u5e38\u5904\u7406\u6765\u6355\u6349\u548c\u5904\u7406\u53ef\u80fd\u7684\u8f93\u5165\u9519\u8bef\u3002<\/p>\n<\/p>\n

\u5728Python\u4e2d\uff0c\u5904\u7406\u7528\u6237\u8f93\u5165\u7684\u5c0f\u6570\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u9700\u6c42\uff0c\u5c24\u5176\u662f\u5728\u7f16\u5199\u9700\u8981\u4e0e\u7528\u6237\u4ea4\u4e92\u7684\u7a0b\u5e8f\u65f6\u3002\u4e0b\u9762\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u5728Python\u4e2d\u6b63\u786e\u5730\u8f93\u5165\u548c\u5904\u7406\u5c0f\u6570\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528input()<\/code>\u51fd\u6570\u63a5\u6536\u7528\u6237\u8f93\u5165<\/h3>\n<\/p>\n

\u5728Python\u4e2d\uff0cinput()<\/code>\u51fd\u6570\u7528\u4e8e\u63a5\u6536\u7528\u6237\u8f93\u5165\u3002\u8be5\u51fd\u6570\u59cb\u7ec8\u8fd4\u56de\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u56e0\u6b64\u5728\u5904\u7406\u5c0f\u6570\u65f6\uff0c\u9700\u8981\u5c06\u8f93\u5165\u7684\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6d6e\u70b9\u6570\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n

user_input = input("\u8bf7\u8f93\u5165\u4e00\u4e2a\u5c0f\u6570: ")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u6bb5\u4ee3\u7801\u5c06\u63d0\u793a\u7528\u6237\u8f93\u5165\u4e00\u4e2a\u5c0f\u6570\uff0c\u5e76\u5c06\u8f93\u5165\u5185\u5bb9\u5b58\u50a8\u5728\u53d8\u91cfuser_input<\/code>\u4e2d\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u901a\u8fc7float()<\/code>\u51fd\u6570\u8fdb\u884c\u8f6c\u6362<\/h3>\n<\/p>\n
\u7531\u4e8einput()<\/code>\u51fd\u6570\u8fd4\u56de\u7684\u662f\u5b57\u7b26\u4e32\uff0c\u56e0\u6b64\u6211\u4eec\u9700\u8981\u5c06\u5176\u8f6c\u6362\u4e3a\u6d6e\u70b9\u6570\u4ee5\u4fbf\u8fdb\u884c\u6570\u5b66\u64cd\u4f5c\u3002\u53ef\u4ee5\u4f7f\u7528float()<\/code>\u51fd\u6570\u5b8c\u6210\u8fd9\u4e00\u8f6c\u6362\uff1a<\/p>\n<\/p>\n
try:<\/p>\n
    number = float(user_input)<\/p>\n
    print(f"\u60a8\u8f93\u5165\u7684\u5c0f\u6570\u662f: {number}")<\/p>\n
except ValueError:<\/p>\n
    print("\u8f93\u5165\u65e0\u6548\uff0c\u8bf7\u8f93\u5165\u4e00\u4e2a\u6709\u6548\u7684\u5c0f\u6570\u3002")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u4f7f\u7528float()<\/code>\u51fd\u6570\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6d6e\u70b9\u6570\uff0c\u5e76\u4f7f\u7528try-except<\/code>\u5757\u6355\u83b7\u53ef\u80fd\u7684ValueError<\/code>\u5f02\u5e38\u3002\u8fd9\u79cd\u65b9\u6cd5\u786e\u4fdd\u4e86\u8f93\u5165\u7684\u6709\u6548\u6027\uff0c\u5e76\u5728\u7528\u6237\u8f93\u5165\u65e0\u6548\u6570\u636e\u65f6\u7ed9\u4e88\u53cd\u9988\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u6ce8\u610f\u5f02\u5e38\u5904\u7406<\/h3>\n<\/p>\n
\u5728\u5904\u7406\u7528\u6237\u8f93\u5165\u65f6\uff0c\u5f02\u5e38\u5904\u7406\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u90e8\u5206\u3002\u7528\u6237\u53ef\u80fd\u4f1a\u8f93\u5165\u65e0\u6548\u6570\u636e\uff08\u5982\u6587\u672c\u6216\u7a7a\u5b57\u7b26\u4e32\uff09\uff0c\u56e0\u6b64\u5728\u5c1d\u8bd5\u8f6c\u6362\u65f6\u9700\u8981\u8fdb\u884c\u9519\u8bef\u5904\u7406\u3002try-except<\/code>\u5757\u662f\u5904\u7406\u8fd9\u4e9b\u9519\u8bef\u7684\u5e38\u7528\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528except ValueError<\/code>\u6355\u83b7\u65e0\u6548\u8f93\u5165\uff0c\u5e76\u63d0\u793a\u7528\u6237\u8f93\u5165\u6709\u6548\u7684\u5c0f\u6570\u3002\u8fd9\u79cd\u65b9\u6cd5\u63d0\u9ad8\u4e86\u7a0b\u5e8f\u7684\u5065\u58ee\u6027\u548c\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n<\/p>\n
\u56db\u3001\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u8fdb\u884c\u9a8c\u8bc1<\/h3>\n<\/p>\n
\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u5728\u8f6c\u6362\u4e4b\u524d\u9a8c\u8bc1\u8f93\u5165\u683c\u5f0f\u3002\u53ef\u4ee5\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u6765\u68c0\u67e5\u8f93\u5165\u662f\u5426\u4e3a\u6709\u6548\u7684\u5c0f\u6570\u683c\u5f0f\uff1a<\/p>\n<\/p>\n
import re<\/p>\n
user_input = input("\u8bf7\u8f93\u5165\u4e00\u4e2a\u5c0f\u6570: ")<\/p>\n
if re.match(r'^-?\\d+(\\.\\d+)?$', user_input):<\/p>\n
    number = float(user_input)<\/p>\n
    print(f"\u60a8\u8f93\u5165\u7684\u5c0f\u6570\u662f: {number}")<\/p>\n
else:<\/p>\n
    print("\u8f93\u5165\u65e0\u6548\uff0c\u8bf7\u8f93\u5165\u4e00\u4e2a\u6709\u6548\u7684\u5c0f\u6570\u3002")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u6b63\u5219\u8868\u8fbe\u5f0f^-?\\d+(\\.\\d+)?$<\/code>\u7528\u4e8e\u9a8c\u8bc1\u8f93\u5165\u662f\u5426\u4e3a\u6709\u6548\u7684\u5c0f\u6570\u683c\u5f0f\uff08\u53ef\u9009\u7684\u8d1f\u53f7\uff0c\u6574\u6570\u90e8\u5206\uff0c\u5c0f\u6570\u70b9\u548c\u5c0f\u6570\u90e8\u5206\uff09\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u5904\u7406\u56fd\u9645\u5316\u5c0f\u6570\u683c\u5f0f<\/h3>\n<\/p>\n
\u5728\u56fd\u9645\u5316\u5e94\u7528\u4e2d\uff0c\u4e0d\u540c\u56fd\u5bb6\/\u5730\u533a\u53ef\u80fd\u4f7f\u7528\u4e0d\u540c\u7684\u5c0f\u6570\u5206\u9694\u7b26\u3002\u4f8b\u5982\uff0c\u67d0\u4e9b\u5730\u65b9\u4f7f\u7528\u9017\u53f7\u800c\u4e0d\u662f\u70b9\u4f5c\u4e3a\u5c0f\u6570\u5206\u9694\u7b26\u3002\u53ef\u4ee5\u4f7f\u7528locale<\/code>\u6a21\u5757\u6765\u5904\u7406\u8fd9\u4e9b\u60c5\u51b5\uff1a<\/p>\n<\/p>\n
import locale<\/p>\n
locale.setlocale(locale.LC_ALL, '')<\/p>\n
user_input = input("\u8bf7\u8f93\u5165\u4e00\u4e2a\u5c0f\u6570: ")<\/p>\n
try:<\/p>\n
    conv = locale.localeconv()<\/p>\n
    number = locale.atof(user_input)<\/p>\n
    print(f"\u60a8\u8f93\u5165\u7684\u5c0f\u6570\u662f: {number}")<\/p>\n
except ValueError:<\/p>\n
    print("\u8f93\u5165\u65e0\u6548\uff0c\u8bf7\u8f93\u5165\u4e00\u4e2a\u6709\u6548\u7684\u5c0f\u6570\u3002")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u8bbe\u7f6e\u9002\u5f53\u7684\u533a\u57df\u8bbe\u7f6e\u548c\u4f7f\u7528locale.atof()<\/code>\u51fd\u6570\uff0c\u53ef\u4ee5\u5904\u7406\u4e0d\u540c\u7684\u56fd\u9645\u5c0f\u6570\u683c\u5f0f\u3002<\/p>\n<\/p>\n
\u516d\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
\u5728Python\u4e2d\uff0c\u8f93\u5165\u548c\u5904\u7406\u5c0f\u6570\u662f\u4e00\u4e2a\u5e38\u89c1\u4efb\u52a1\u3002\u901a\u8fc7\u7ed3\u5408\u4f7f\u7528input()<\/code>\u3001float()<\/code>\u51fd\u6570\u548c\u5f02\u5e38\u5904\u7406\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u5904\u7406\u7528\u6237\u8f93\u5165\u7684\u5c0f\u6570\u3002\u6b64\u5916\uff0c\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u548clocale<\/code>\u6a21\u5757\uff0c\u53ef\u4ee5\u8fdb\u4e00\u6b65\u63d0\u9ad8\u8f93\u5165\u9a8c\u8bc1\u548c\u5904\u7406\u7684\u7075\u6d3b\u6027\u548c\u51c6\u786e\u6027\u3002\u786e\u4fdd\u7a0b\u5e8f\u80fd\u591f\u5904\u7406\u65e0\u6548\u8f93\u5165\u548c\u4e0d\u540c\u7684\u5c0f\u6570\u683c\u5f0f\uff0c\u6709\u52a9\u4e8e\u63d0\u5347\u7a0b\u5e8f\u7684\u5065\u58ee\u6027\u548c\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u8f93\u5165\u6d6e\u70b9\u6570\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684input()<\/code>\u51fd\u6570\u6765\u63a5\u6536\u7528\u6237\u8f93\u5165\u3002\u5bf9\u4e8e\u5c0f\u6570\u6216\u6d6e\u70b9\u6570\uff0c\u8f93\u5165\u7684\u503c\u4f1a\u4ee5\u5b57\u7b26\u4e32\u5f62\u5f0f\u8fd4\u56de\u3002\u4e3a\u4e86\u5c06\u5176\u8f6c\u6362\u4e3a\u5c0f\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528float()<\/code>\u51fd\u6570\u3002\u4f8b\u5982\uff0c\u7528\u6237\u8f93\u5165\u4e00\u4e2a\u5c0f\u6570\u540e\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u5b9e\u73b0\u8f6c\u6362\uff1a  <\/p>\n
user_input = input("\u8bf7\u8f93\u5165\u4e00\u4e2a\u5c0f\u6570: ")\ndecimal_number = float(user_input)\nprint(f"\u60a8\u8f93\u5165\u7684\u5c0f\u6570\u662f: {decimal_number}")\n<\/code><\/pre>\n
Python\u652f\u6301\u54ea\u4e9b\u7c7b\u578b\u7684\u5c0f\u6570\u8f93\u5165\uff1f<\/strong>
Python\u652f\u6301\u591a\u79cd\u5c0f\u6570\u8f93\u5165\u7c7b\u578b\uff0c\u5305\u62ec\u6b63\u6570\u3001\u8d1f\u6570\u548c\u79d1\u5b66\u8ba1\u6570\u6cd5\u8868\u793a\u7684\u5c0f\u6570\u3002\u7528\u6237\u53ef\u4ee5\u8f93\u5165\u59823.14<\/code>\u3001-0.001<\/code>\u62162e3<\/code>\uff08\u8868\u793a2000\uff09\u7684\u503c\u3002\u65e0\u8bba\u8f93\u5165\u4f55\u79cd\u683c\u5f0f\uff0c\u7a0b\u5e8f\u90fd\u53ef\u4ee5\u901a\u8fc7float()<\/code>\u51fd\u6570\u8fdb\u884c\u5904\u7406\u3002<\/p>\n
\u5982\u679c\u7528\u6237\u8f93\u5165\u7684\u4e0d\u662f\u5c0f\u6570\uff0c\u5982\u4f55\u5904\u7406\u9519\u8bef\uff1f<\/strong>
\u5728\u5904\u7406\u7528\u6237\u8f93\u5165\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528try-except<\/code>\u8bed\u53e5\u6765\u6355\u83b7\u53ef\u80fd\u53d1\u751f\u7684\u9519\u8bef\u3002\u5982\u679c\u7528\u6237\u8f93\u5165\u7684\u5185\u5bb9\u65e0\u6cd5\u8f6c\u6362\u4e3a\u6d6e\u70b9\u6570\uff0c\u7a0b\u5e8f\u53ef\u4ee5\u63d0\u793a\u7528\u6237\u91cd\u65b0\u8f93\u5165\u3002\u4f8b\u5982\uff1a  <\/p>\n
try:\n    user_input = input("\u8bf7\u8f93\u5165\u4e00\u4e2a\u5c0f\u6570: ")\n    decimal_number = float(user_input)\n    print(f"\u60a8\u8f93\u5165\u7684\u5c0f\u6570\u662f: {decimal_number}")\nexcept ValueError:\n    print("\u8f93\u5165\u65e0\u6548\uff0c\u8bf7\u786e\u4fdd\u60a8\u8f93\u5165\u7684\u662f\u4e00\u4e2a\u6709\u6548\u7684\u5c0f\u6570\u3002")\n<\/code><\/pre>\n
\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u63d0\u5347\u7528\u6237\u4f53\u9a8c\uff0c\u786e\u4fdd\u7a0b\u5e8f\u4e0d\u4f1a\u56e0\u4e3a\u65e0\u6548\u8f93\u5165\u800c\u5d29\u6e83\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u8f93\u5165\u5c0f\u6570\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528input()\u51fd\u6570\u63a5\u6536\u7528\u6237\u8f93\u5165\u3001\u901a\u8fc7float()\u51fd\u6570\u8fdb\u884c\u8f6c\u6362\u3001\u6ce8\u610f\u5f02\u5e38 […]","protected":false},"author":3,"featured_media":949108,"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\/949095"}],"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=949095"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/949095\/revisions"}],"predecessor-version":[{"id":949113,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/949095\/revisions\/949113"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/949108"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=949095"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=949095"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=949095"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}