{"id":1157056,"date":"2025-01-13T18:23:45","date_gmt":"2025-01-13T10:23:45","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1157056.html"},"modified":"2025-01-13T18:23:48","modified_gmt":"2025-01-13T10:23:48","slug":"python%e4%b8%ad%e5%a6%82%e4%bd%95%e5%bc%80%e6%96%b9%e8%bf%90%e7%ae%97-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1157056.html","title":{"rendered":"python\u4e2d\u5982\u4f55\u5f00\u65b9\u8fd0\u7b97"},"content":{"rendered":"

\"python\u4e2d\u5982\u4f55\u5f00\u65b9\u8fd0\u7b97\"<\/p>\n

\u5728Python\u4e2d\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u8fdb\u884c\u5f00\u65b9\u8fd0\u7b97\uff0c\u5305\u62ec\u4f7f\u7528\u5185\u7f6e\u51fd\u6570\u3001\u6a21\u5757\u548c\u8fd0\u7b97\u7b26\u3002\u5176\u4e2d\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528math.sqrt()<\/code>\u51fd\u6570\u3001<\/strong><\/code>\u8fd0\u7b97\u7b26\u548cpow()<\/code>\u51fd\u6570\u3002\u5728\u8fd9\u4e09\u79cd\u65b9\u6cd5\u4e2d\uff0cmath.sqrt()<\/code>\u51fd\u6570\u662f\u6700\u5e38\u7528\u7684\uff0c\u56e0\u4e3a\u5b83\u4e13\u95e8\u7528\u4e8e\u8ba1\u7b97\u5e73\u65b9\u6839\uff0c\u5177\u6709\u8f83\u9ad8\u7684\u6027\u80fd\u548c\u51c6\u786e\u6027\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\u53ca\u5176\u4f7f\u7528\u793a\u4f8b\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528math.sqrt()<\/code>\u51fd\u6570<\/p>\n<\/p>\n

math.sqrt()<\/code>\u51fd\u6570\u662fPython\u6807\u51c6\u5e93\u4e2d\u7684\u4e00\u4e2a\u51fd\u6570\uff0c\u7528\u4e8e\u8ba1\u7b97\u4e00\u4e2a\u6570\u7684\u5e73\u65b9\u6839\u3002\u4f7f\u7528\u8fd9\u4e2a\u51fd\u6570\u9700\u8981\u5148\u5bfc\u5165math<\/code>\u6a21\u5757\u3002\u8fd9\u4e2a\u65b9\u6cd5\u4e0d\u4ec5\u7b80\u5355\u6613\u7528\uff0c\u800c\u4e14\u5728\u5904\u7406\u6d6e\u70b9\u6570\u65f6\u5177\u6709\u9ad8\u7cbe\u5ea6\u3002<\/p>\n<\/p>\n

import math<\/p>\n
\u793a\u4f8b<\/strong><\/h2>\n
num = 16<\/p>\n
sqrt_num = math.sqrt(num)<\/p>\n
print(f"{num}\u7684\u5e73\u65b9\u6839\u662f: {sqrt_num}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u5bfc\u5165math<\/code>\u6a21\u5757\uff0c\u7136\u540e\u4f7f\u7528math.sqrt()<\/code>\u51fd\u6570\u8ba1\u7b97\u6570\u5b5716\u7684\u5e73\u65b9\u6839\uff0c\u5e76\u5c06\u7ed3\u679c\u6253\u5370\u51fa\u6765\u3002math.sqrt()<\/code>\u51fd\u6570\u662f\u5904\u7406\u6d6e\u70b9\u6570\u5e73\u65b9\u6839\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u4e4b\u4e00\uff0c\u5c24\u5176\u5728\u79d1\u5b66\u8ba1\u7b97\u4e2d\u975e\u5e38\u65b9\u4fbf\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528<\/code>\u8fd0\u7b97\u7b26<\/p>\n<\/p>\n
\u5728Python\u4e2d\uff0c<\/code>\u8fd0\u7b97\u7b26\u7528\u4e8e\u8ba1\u7b97\u5e42\u6b21\u65b9\u3002\u901a\u8fc7\u5c06\u4e00\u4e2a\u6570\u7684\u5e42\u6b21\u65b9\u8bbe\u4e3a0.5\uff0c\u5373\u53ef\u8ba1\u7b97\u5176\u5e73\u65b9\u6839\u3002\u8fd9\u4e2a\u65b9\u6cd5\u4e0d\u9700\u8981\u5bfc\u5165\u4efb\u4f55\u6a21\u5757\uff0c\u9002\u7528\u4e8e\u7b80\u5355\u7684\u5e73\u65b9\u6839\u8ba1\u7b97\u3002<\/p>\n<\/p>\n
# \u793a\u4f8b<\/p>\n
num = 16<\/p>\n
sqrt_num = num  0.5<\/p>\n
print(f"{num}\u7684\u5e73\u65b9\u6839\u662f: {sqrt_num}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u76f4\u63a5\u4f7f\u7528<\/code>\u8fd0\u7b97\u7b26\u5c06\u6570\u5b5716\u7684\u5e42\u6b21\u65b9\u8bbe\u4e3a0.5\uff0c\u4ece\u800c\u8ba1\u7b97\u51fa\u5b83\u7684\u5e73\u65b9\u6839\u3002\u8fd9\u79cd\u65b9\u6cd5\u7b80\u5355\u76f4\u89c2\uff0c\u9002\u7528\u4e8e\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u7684\u57fa\u672c\u8fd0\u7b97\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528pow()<\/code>\u51fd\u6570<\/p>\n<\/p>\n
pow()<\/code>\u51fd\u6570\u662fPython\u5185\u7f6e\u7684\u4e00\u4e2a\u51fd\u6570\uff0c\u7528\u4e8e\u8ba1\u7b97\u4e00\u4e2a\u6570\u7684\u5e42\u3002\u901a\u8fc7\u5c06\u4e00\u4e2a\u6570\u7684\u5e42\u6b21\u65b9\u8bbe\u4e3a0.5\uff0c\u4e5f\u53ef\u4ee5\u8ba1\u7b97\u5176\u5e73\u65b9\u6839\u3002\u4e0emath.sqrt()<\/code>\u548c<\/code>\u8fd0\u7b97\u7b26\u76f8\u6bd4\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u5728\u5904\u7406\u5927\u6570\u548c\u6d6e\u70b9\u6570\u65f6\u4e5f\u5177\u6709\u8f83\u9ad8\u7684\u7cbe\u5ea6\u3002<\/p>\n<\/p>\n
# \u793a\u4f8b<\/p>\n
num = 16<\/p>\n
sqrt_num = pow(num, 0.5)<\/p>\n
print(f"{num}\u7684\u5e73\u65b9\u6839\u662f: {sqrt_num}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528pow()<\/code>\u51fd\u6570\u5c06\u6570\u5b5716\u7684\u5e42\u6b21\u65b9\u8bbe\u4e3a0.5\uff0c\u4ece\u800c\u8ba1\u7b97\u51fa\u5b83\u7684\u5e73\u65b9\u6839\u3002pow()<\/code>\u51fd\u6570\u9002\u7528\u4e8e\u5404\u79cd\u60c5\u51b5\u4e0b\u7684\u5e42\u6b21\u65b9\u8fd0\u7b97\u3002<\/p>\n<\/p>\n
\u56db\u3001\u4f7f\u7528numpy<\/code>\u5e93<\/p>\n<\/p>\n
\u5bf9\u4e8e\u9700\u8981\u8fdb\u884c\u5927\u91cf\u6570\u503c\u8ba1\u7b97\u7684\u7528\u6237\u6765\u8bf4\uff0cnumpy<\/code>\u5e93\u63d0\u4f9b\u4e86\u66f4\u9ad8\u6548\u7684\u65b9\u6cd5\u6765\u8ba1\u7b97\u5e73\u65b9\u6839\u3002numpy<\/code>\u5e93\u662f\u4e00\u4e2a\u7528\u4e8e\u79d1\u5b66\u8ba1\u7b97\u7684\u5e93\uff0c\u63d0\u4f9b\u4e86\u8bb8\u591a\u5f3a\u5927\u7684\u51fd\u6570\u548c\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
import numpy as np<\/p>\n
\u793a\u4f8b<\/strong><\/h2>\n
num = np.array([16, 25, 36])<\/p>\n
sqrt_num = np.sqrt(num)<\/p>\n
print(f"\u6570\u7ec4{num}\u7684\u5e73\u65b9\u6839\u662f: {sqrt_num}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u5bfc\u5165numpy<\/code>\u5e93\uff0c\u7136\u540e\u4f7f\u7528numpy.sqrt()<\/code>\u51fd\u6570\u8ba1\u7b97\u6570\u7ec4\u4e2d\u6bcf\u4e2a\u5143\u7d20\u7684\u5e73\u65b9\u6839\u3002numpy<\/code>\u5e93\u9002\u7528\u4e8e\u5927\u89c4\u6a21\u6570\u636e\u7684\u5904\u7406\u548c\u79d1\u5b66\u8ba1\u7b97\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u4f7f\u7528cmath<\/code>\u5e93<\/p>\n<\/p>\n
\u5bf9\u4e8e\u590d\u6570\u7684\u5e73\u65b9\u6839\u8ba1\u7b97\uff0ccmath<\/code>\u5e93\u63d0\u4f9b\u4e86\u76f8\u5e94\u7684\u65b9\u6cd5\u3002cmath<\/code>\u5e93\u662fPython\u6807\u51c6\u5e93\u4e2d\u7684\u4e00\u4e2a\u6a21\u5757\uff0c\u4e13\u95e8\u7528\u4e8e\u5904\u7406\u590d\u6570\u8fd0\u7b97\u3002<\/p>\n<\/p>\n
import cmath<\/p>\n
\u793a\u4f8b<\/strong><\/h2>\n
num = -16<\/p>\n
sqrt_num = cmath.sqrt(num)<\/p>\n
print(f"{num}\u7684\u5e73\u65b9\u6839\u662f: {sqrt_num}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528cmath.sqrt()<\/code>\u51fd\u6570\u8ba1\u7b97\u8d1f\u6570-16\u7684\u5e73\u65b9\u6839\uff0c\u7ed3\u679c\u662f\u4e00\u4e2a\u590d\u6570\u3002cmath<\/code>\u5e93\u9002\u7528\u4e8e\u9700\u8981\u8fdb\u884c\u590d\u6570\u8fd0\u7b97\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n
\u7efc\u4e0a\u6240\u8ff0\uff0cPython\u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u6765\u8fdb\u884c\u5f00\u65b9\u8fd0\u7b97\uff0c\u5305\u62ecmath.sqrt()<\/code>\u51fd\u6570\u3001<\/code>\u8fd0\u7b97\u7b26\u3001pow()<\/code>\u51fd\u6570\u3001numpy<\/code>\u5e93\u548ccmath<\/code>\u5e93\u3002\u6839\u636e\u5b9e\u9645\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u66f4\u9ad8\u6548\u5730\u5b8c\u6210\u5e73\u65b9\u6839\u8ba1\u7b97\u4efb\u52a1\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u8fdb\u884c\u5e73\u65b9\u6839\u8fd0\u7b97\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684math<\/code>\u6a21\u5757\u4e2d\u7684sqrt()<\/code>\u51fd\u6570\u6765\u8ba1\u7b97\u5e73\u65b9\u6839\u3002\u9996\u5148\u9700\u8981\u5bfc\u5165math<\/code>\u6a21\u5757\uff0c\u7136\u540e\u8c03\u7528sqrt()<\/code>\u65b9\u6cd5\u5e76\u4f20\u5165\u9700\u8981\u5f00\u65b9\u7684\u6570\u5b57\u3002\u4f8b\u5982\uff1a  <\/p>\n
import math  \nresult = math.sqrt(16)  # \u7ed3\u679c\u4e3a4.0\n<\/code><\/pre>\n
\u6b64\u5916\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528\u5e42\u8fd0\u7b97\u7b26<strong><\/code>\u6765\u5b9e\u73b0\u5e73\u65b9\u6839\u7684\u8ba1\u7b97\uff0cx <\/strong> 0.5<\/code>\u5c06\u8fd4\u56dex\u7684\u5e73\u65b9\u6839\u3002<\/p>\n
Python\u4e2d\u662f\u5426\u6709\u5176\u4ed6\u65b9\u6cd5\u8ba1\u7b97\u5e73\u65b9\u6839\uff1f<\/strong>
\u9664\u4e86math.sqrt()<\/code>\u51fd\u6570\u548c\u5e42\u8fd0\u7b97\u7b26\uff0cPython\u8fd8\u63d0\u4f9b\u4e86numpy<\/code>\u5e93\u7684sqrt()<\/code>\u51fd\u6570\uff0c\u7279\u522b\u9002\u5408\u5904\u7406\u6570\u7ec4\u548c\u77e9\u9635\u8fd0\u7b97\u3002\u4f7f\u7528numpy<\/code>\u65f6\uff0c\u53ef\u4ee5\u8fd9\u6837\u64cd\u4f5c\uff1a  <\/p>\n
import numpy as np  \nresult = np.sqrt([1, 4, 9, 16])  # \u8fd4\u56de\u6570\u7ec4[1.0, 2.0, 3.0, 4.0]\n<\/code><\/pre>\n
\u8fd9\u4f7f\u5f97\u5728\u5904\u7406\u5927\u91cf\u6570\u636e\u65f6\u8ba1\u7b97\u5e73\u65b9\u6839\u53d8\u5f97\u66f4\u4e3a\u9ad8\u6548\u3002<\/p>\n
\u8ba1\u7b97\u5e73\u65b9\u6839\u65f6\u4f1a\u9047\u5230\u4ec0\u4e48\u5e38\u89c1\u9519\u8bef\uff1f<\/strong>
\u5728\u8fdb\u884c\u5e73\u65b9\u6839\u8fd0\u7b97\u65f6\uff0c\u8f93\u5165\u8d1f\u6570\u5c06\u5bfc\u81f4\u9519\u8bef\uff0c\u56e0\u4e3a\u5b9e\u6570\u8303\u56f4\u5185\u7684\u5e73\u65b9\u6839\u4e0d\u53ef\u5b9a\u4e49\u3002\u4f7f\u7528math.sqrt()<\/code>\u51fd\u6570\u65f6\uff0c\u5982\u679c\u4f20\u5165\u8d1f\u503c\uff0c\u4f1a\u5f15\u53d1ValueError<\/code>\u3002\u4e3a\u4e86\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\uff0c\u53ef\u4ee5\u5728\u8ba1\u7b97\u524d\u68c0\u67e5\u6570\u503c\u662f\u5426\u4e3a\u8d1f\u6570\u3002\u4f8b\u5982\uff1a  <\/p>\n
number = -4  \nif number < 0:  \n    print("\u65e0\u6cd5\u8ba1\u7b97\u8d1f\u6570\u7684\u5e73\u65b9\u6839")  \nelse:  \n    result = math.sqrt(number)\n<\/code><\/pre>\n
\u8fd9\u6837\u53ef\u4ee5\u786e\u4fdd\u7a0b\u5e8f\u4e0d\u4f1a\u56e0\u65e0\u6548\u8f93\u5165\u800c\u5d29\u6e83\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u8fdb\u884c\u5f00\u65b9\u8fd0\u7b97\uff0c\u5305\u62ec\u4f7f\u7528\u5185\u7f6e\u51fd\u6570\u3001\u6a21\u5757\u548c\u8fd0\u7b97\u7b26\u3002\u5176\u4e2d\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528math. […]","protected":false},"author":3,"featured_media":1157065,"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\/1157056"}],"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=1157056"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1157056\/revisions"}],"predecessor-version":[{"id":1157066,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1157056\/revisions\/1157066"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1157065"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1157056"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1157056"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1157056"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}