{"id":1076410,"date":"2025-01-08T11:53:05","date_gmt":"2025-01-08T03:53:05","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1076410.html"},"modified":"2025-01-08T11:53:07","modified_gmt":"2025-01-08T03:53:07","slug":"python%e5%a6%82%e4%bd%95%e6%8c%87%e5%ae%9a%e4%bb%a5%e7%a7%91%e5%ad%a6%e8%ae%a1%e6%95%b0%e6%b3%95%e8%be%93%e5%87%ba-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1076410.html","title":{"rendered":"python\u5982\u4f55\u6307\u5b9a\u4ee5\u79d1\u5b66\u8ba1\u6570\u6cd5\u8f93\u51fa"},"content":{"rendered":"

\"python\u5982\u4f55\u6307\u5b9a\u4ee5\u79d1\u5b66\u8ba1\u6570\u6cd5\u8f93\u51fa\"<\/p>\n

Python\u5982\u4f55\u6307\u5b9a\u4ee5\u79d1\u5b66\u8ba1\u6570\u6cd5\u8f93\u51fa<\/strong><\/p>\n<\/p>\n

\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u3001format()<\/code>\u65b9\u6cd5\u3001f-string<\/code>\u3001\u4ee5\u53canumpy<\/code>\u5e93\u4e2d\u7684\u8bbe\u7f6e\u6765\u6307\u5b9a\u4ee5\u79d1\u5b66\u8ba1\u6570\u6cd5\u8f93\u51fa\u6570\u636e\u3002\u901a\u8fc7\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u63a7\u5236\u6570\u5b57\u7684\u663e\u793a\u683c\u5f0f\uff0c\u4f7f\u7528format()<\/code>\u65b9\u6cd5\u662f\u5176\u4e2d\u6700\u5e38\u89c1\u7684\u4e00\u79cd\u3002<\/strong> \u4e0b\u9762\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u5728Python\u4e2d\u5b9e\u73b0\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32<\/h3>\n<\/p>\n

\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u6765\u63a7\u5236\u6570\u5b57\u7684\u663e\u793a\u683c\u5f0f\uff0c\u5305\u62ec\u79d1\u5b66\u8ba1\u6570\u6cd5\u3002\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u6700\u5e38\u89c1\u7684\u65b9\u6cd5\u662f\u901a\u8fc7%<\/code>\u8fd0\u7b97\u7b26\u3002<\/p>\n<\/p>\n

\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n

number = 123456789<\/p>\n
formatted_number = "%e" % number<\/p>\n
print(formatted_number)  # \u8f93\u51fa: 1.234568e+08<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u91cc\u7684%e<\/code>\u8868\u793a\u4ee5\u79d1\u5b66\u8ba1\u6570\u6cd5\u683c\u5f0f\u5316\u6570\u5b57\u3002\u6b64\u65b9\u6cd5\u7b80\u5355\u76f4\u63a5\uff0c\u9002\u7528\u4e8e\u5927\u591a\u6570\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528format()<\/code>\u65b9\u6cd5<\/h3>\n<\/p>\n
format()<\/code>\u65b9\u6cd5\u662fPython\u4e2d\u53e6\u4e00\u79cd\u5e38\u89c1\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u65b9\u6cd5\u3002\u53ef\u4ee5\u4f7f\u7528format()<\/code>\u65b9\u6cd5\u6307\u5b9a\u6570\u5b57\u4ee5\u79d1\u5b66\u8ba1\u6570\u6cd5\u8f93\u51fa\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
number = 123456789<\/p>\n
formatted_number = "{:e}".format(number)<\/p>\n
print(formatted_number)  # \u8f93\u51fa: 1.234568e+08<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u91cc\u7684{:e}<\/code>\u4e0e\u524d\u9762\u7684%e<\/code>\u4f5c\u7528\u76f8\u540c\uff0c\u8868\u793a\u5c06\u6570\u5b57\u683c\u5f0f\u5316\u4e3a\u79d1\u5b66\u8ba1\u6570\u6cd5\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528f-string<\/code><\/h3>\n<\/p>\n
f-string<\/code>\u662fPython 3.6\u5f15\u5165\u7684\u4e00\u79cd\u65b0\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u65b9\u6cd5\u3002\u5b83\u66f4\u7b80\u6d01\u3001\u66f4\u6613\u8bfb\uff0c\u9002\u7528\u4e8e\u52a8\u6001\u751f\u6210\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
number = 123456789<\/p>\n
formatted_number = f"{number:e}"<\/p>\n
print(formatted_number)  # \u8f93\u51fa: 1.234568e+08<\/p>\n
<\/code><\/pre>\n<\/p>\n
f-string<\/code>\u4f7f\u7528\u5927\u62ec\u53f7{}<\/code>\u5305\u88f9\u53d8\u91cf\uff0c\u5e76\u5728\u53d8\u91cf\u540e\u9762\u6dfb\u52a0:e<\/code>\u6765\u6307\u5b9a\u79d1\u5b66\u8ba1\u6570\u6cd5\u683c\u5f0f\u3002<\/p>\n<\/p>\n
\u56db\u3001\u4f7f\u7528numpy<\/code>\u5e93<\/h3>\n<\/p>\n
numpy<\/code>\u5e93\u662fPython\u4e2d\u7528\u4e8e\u79d1\u5b66\u8ba1\u7b97\u7684\u5e38\u7528\u5e93\u3002\u53ef\u4ee5\u4f7f\u7528numpy<\/code>\u5e93\u4e2d\u7684\u8bbe\u7f6e\u6765\u63a7\u5236\u6570\u5b57\u7684\u663e\u793a\u683c\u5f0f\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
import numpy as np<\/p>\n
number = 123456789<\/p>\n
formatted_number = np.format_float_scientific(number)<\/p>\n
print(formatted_number)  # \u8f93\u51fa: 1.234568e+08<\/p>\n
<\/code><\/pre>\n<\/p>\n
np.format_float_scientific()<\/code>\u51fd\u6570\u53ef\u4ee5\u5c06\u6570\u5b57\u683c\u5f0f\u5316\u4e3a\u79d1\u5b66\u8ba1\u6570\u6cd5\u3002\u6b64\u65b9\u6cd5\u7279\u522b\u9002\u7528\u4e8e\u9700\u8981\u8fdb\u884c\u5927\u91cf\u79d1\u5b66\u8ba1\u7b97\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u8be6\u7ec6\u63cf\u8ff0format()<\/code>\u65b9\u6cd5<\/h3>\n<\/p>\n
\u5728\u4f17\u591a\u65b9\u6cd5\u4e2d\uff0cformat()<\/code>\u65b9\u6cd5\u662f\u6700\u7075\u6d3b\u548c\u5f3a\u5927\u7684\u4e4b\u4e00\u3002\u6211\u4eec\u5c06\u5728\u6b64\u8be6\u7ec6\u63cf\u8ff0\u5982\u4f55\u4f7f\u7528format()<\/code>\u65b9\u6cd5\u8fdb\u884c\u79d1\u5b66\u8ba1\u6570\u6cd5\u8f93\u51fa\u3002<\/p>\n<\/p>\n
\u6307\u5b9a\u5c0f\u6570\u4f4d\u6570<\/h4>\n<\/p>\n
\u53ef\u4ee5\u901a\u8fc7\u5728{:e}<\/code>\u4e2d\u6dfb\u52a0\u7cbe\u5ea6\u8bf4\u660e\u7b26\u6765\u6307\u5b9a\u5c0f\u6570\u4f4d\u6570\u3002\u4f8b\u5982\uff0c{:.2e}<\/code>\u8868\u793a\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
number = 123456789<\/p>\n
formatted_number = "{:.2e}".format(number)<\/p>\n
print(formatted_number)  # \u8f93\u51fa: 1.23e+08<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u91cc\u7684{:.2e}<\/code>\u8868\u793a\u5c06\u6570\u5b57\u683c\u5f0f\u5316\u4e3a\u79d1\u5b66\u8ba1\u6570\u6cd5\uff0c\u5e76\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u3002<\/p>\n<\/p>\n
\u63a7\u5236\u7b26\u53f7\u663e\u793a<\/h4>\n<\/p>\n
\u53ef\u4ee5\u901a\u8fc7\u6dfb\u52a0+<\/code>\u6216-<\/code>\u6765\u63a7\u5236\u7b26\u53f7\u7684\u663e\u793a\u3002\u4f8b\u5982\uff0c{:+e}<\/code>\u8868\u793a\u59cb\u7ec8\u663e\u793a\u7b26\u53f7\uff0c{:-e}<\/code>\u8868\u793a\u4ec5\u5728\u8d1f\u6570\u65f6\u663e\u793a\u7b26\u53f7\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
number = 123456789<\/p>\n
formatted_number = "{:+e}".format(number)<\/p>\n
print(formatted_number)  # \u8f93\u51fa: +1.234568e+08<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u91cc\u7684{:+e}<\/code>\u8868\u793a\u59cb\u7ec8\u663e\u793a\u7b26\u53f7\u3002<\/p>\n<\/p>\n
\u516d\u3001\u5176\u4ed6\u5e38\u89c1\u95ee\u9898<\/h3>\n<\/p>\n
\u5982\u4f55\u5904\u7406\u8d1f\u6570<\/h4>\n<\/p>\n
\u4e0a\u8ff0\u65b9\u6cd5\u5747\u9002\u7528\u4e8e\u8d1f\u6570\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
number = -123456789<\/p>\n
formatted_number = "{:e}".format(number)<\/p>\n
print(formatted_number)  # \u8f93\u51fa: -1.234568e+08<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5982\u4f55\u5904\u7406\u975e\u5e38\u5c0f\u7684\u6570<\/h4>\n<\/p>\n
\u540c\u6837\uff0c\u4ee5\u4e0a\u65b9\u6cd5\u4e5f\u9002\u7528\u4e8e\u975e\u5e38\u5c0f\u7684\u6570\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
number = 0.000000123456789<\/p>\n
formatted_number = "{:e}".format(number)<\/p>\n
print(formatted_number)  # \u8f93\u51fa: 1.234568e-07<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e03\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
\u5728Python\u4e2d\uff0c\u6307\u5b9a\u4ee5\u79d1\u5b66\u8ba1\u6570\u6cd5\u8f93\u51fa\u6570\u636e\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u5305\u62ec\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u3001format()<\/code>\u65b9\u6cd5\u3001f-string<\/code>\u3001\u4ee5\u53canumpy<\/code>\u5e93\u4e2d\u7684\u8bbe\u7f6e\u3002\u8fd9\u4e9b\u65b9\u6cd5\u5404\u6709\u4f18\u52a3\uff0c\u9002\u7528\u4e8e\u4e0d\u540c\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n
    \n
  1. \u683c\u5f0f\u5316\u5b57\u7b26\u4e32<\/strong>\uff1a\u7b80\u5355\u76f4\u63a5\uff0c\u9002\u7528\u4e8e\u5c0f\u89c4\u6a21\u6570\u636e\u5904\u7406\u3002<\/li>\n
  2. format()<\/code>\u65b9\u6cd5<\/strong>\uff1a\u7075\u6d3b\u5f3a\u5927\uff0c\u9002\u7528\u4e8e\u9700\u8981\u7cbe\u786e\u63a7\u5236\u8f93\u51fa\u683c\u5f0f\u7684\u573a\u666f\u3002<\/li>\n
  3. f-string<\/code><\/strong>\uff1a\u7b80\u6d01\u6613\u8bfb\uff0c\u9002\u7528\u4e8e\u52a8\u6001\u751f\u6210\u5b57\u7b26\u4e32\u7684\u573a\u666f\u3002<\/li>\n
  4. numpy<\/code>\u5e93<\/strong>\uff1a\u9002\u7528\u4e8e\u9700\u8981\u8fdb\u884c\u5927\u91cf\u79d1\u5b66\u8ba1\u7b97\u7684\u573a\u666f\u3002<\/li>\n<\/ol>\n
    \u901a\u8fc7\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u63a7\u5236\u6570\u5b57\u7684\u663e\u793a\u683c\u5f0f\uff0c\u6ee1\u8db3\u5404\u79cd\u4e0d\u540c\u7684\u9700\u6c42\u3002<\/p>\n<\/p>\n
    \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
     \u5982\u4f55\u5728Python\u4e2d\u8bbe\u7f6e\u6d6e\u70b9\u6570\u7684\u8f93\u51fa\u683c\u5f0f\u4e3a\u79d1\u5b66\u8ba1\u6570\u6cd5\uff1f<\/strong>
    \u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u65b9\u6cd5\u6216\u683c\u5f0f\u5316\u51fd\u6570\u6765\u6307\u5b9a\u6d6e\u70b9\u6570\u7684\u8f93\u51fa\u683c\u5f0f\u4e3a\u79d1\u5b66\u8ba1\u6570\u6cd5\u3002\u53ef\u4ee5\u901a\u8fc7format()<\/code>\u51fd\u6570\u3001f\u5b57\u7b26\u4e32\u6216%<\/code>\u683c\u5f0f\u5316\u6765\u5b9e\u73b0\u3002\u4f8b\u5982\uff0c\u4f7f\u7528format(value, ".2e")<\/code>\u53ef\u4ee5\u5c06\u6d6e\u70b9\u6570\u4ee5\u79d1\u5b66\u8ba1\u6570\u6cd5\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u5f62\u5f0f\u8f93\u51fa\u3002<\/p>\n
    \u5728Python\u4e2d\u5982\u4f55\u63a7\u5236\u79d1\u5b66\u8ba1\u6570\u6cd5\u7684\u7cbe\u5ea6\uff1f<\/strong>
    \u53ef\u4ee5\u901a\u8fc7\u683c\u5f0f\u5316\u65b9\u6cd5\u4e2d\u7684\u53c2\u6570\u6765\u63a7\u5236\u8f93\u51fa\u7684\u7cbe\u5ea6\u3002\u4f8b\u5982\uff0c\u4f7f\u7528"{:.3e}".format(value)<\/code>\u53ef\u4ee5\u5c06\u6570\u5b57\u4ee5\u79d1\u5b66\u8ba1\u6570\u6cd5\u8f93\u51fa\uff0c\u5e76\u4fdd\u7559\u4e09\u4f4d\u5c0f\u6570\u3002\u901a\u8fc7\u8c03\u6574\u5c0f\u6570\u70b9\u540e\u7684\u6570\u5b57\uff0c\u53ef\u4ee5\u7075\u6d3b\u63a7\u5236\u8f93\u51fa\u7ed3\u679c\u7684\u7cbe\u5ea6\u3002<\/p>\n
    \u662f\u5426\u53ef\u4ee5\u5728Python\u7684\u8f93\u51fa\u4e2d\u7981\u7528\u79d1\u5b66\u8ba1\u6570\u6cd5\uff1f<\/strong>
    \u662f\u7684\uff0c\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6eNumPy\u7684\u6253\u5370\u9009\u9879\u6216\u8005\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u6765\u7981\u7528\u79d1\u5b66\u8ba1\u6570\u6cd5\u8f93\u51fa\u3002\u4f8b\u5982\uff0c\u5728NumPy\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528np.set_printoptions(suppress=True)<\/code>\u6765\u7981\u6b62\u79d1\u5b66\u8ba1\u6570\u6cd5\u8f93\u51fa\u3002\u5bf9\u4e8e\u666e\u901a\u6d6e\u70b9\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528"{:.2f}".format(value)<\/code>\u5c06\u5176\u683c\u5f0f\u5316\u4e3a\u5e38\u89c4\u5c0f\u6570\u5f62\u5f0f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u5982\u4f55\u6307\u5b9a\u4ee5\u79d1\u5b66\u8ba1\u6570\u6cd5\u8f93\u51fa \u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u3001format()\u65b9\u6cd5\u3001f-str […]","protected":false},"author":3,"featured_media":1076419,"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\/1076410"}],"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=1076410"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1076410\/revisions"}],"predecessor-version":[{"id":1076420,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1076410\/revisions\/1076420"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1076419"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1076410"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1076410"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1076410"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}