{"id":1000347,"date":"2024-12-27T09:49:18","date_gmt":"2024-12-27T01:49:18","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1000347.html"},"modified":"2024-12-27T09:49:22","modified_gmt":"2024-12-27T01:49:22","slug":"python%e6%a0%87%e5%87%86%e5%ba%93%e5%a6%82%e4%bd%95%e5%af%bc%e5%85%a5","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1000347.html","title":{"rendered":"python\u6807\u51c6\u5e93\u5982\u4f55\u5bfc\u5165"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25074955\/d1f9c0a3-cdc4-4240-a539-5fa761d61309.webp\" alt=\"python\u6807\u51c6\u5e93\u5982\u4f55\u5bfc\u5165\" \/><\/p>\n<p><p> <strong>Python\u6807\u51c6\u5e93\u7684\u5bfc\u5165\u65b9\u5f0f\u6709\uff1a\u4f7f\u7528import\u8bed\u53e5\u5bfc\u5165\u6574\u4e2a\u6a21\u5757\u3001\u4f7f\u7528from&#8230;import\u8bed\u53e5\u5bfc\u5165\u6a21\u5757\u4e2d\u7684\u7279\u5b9a\u5bf9\u8c61\u3001\u4f7f\u7528as\u5173\u952e\u5b57\u4e3a\u5bfc\u5165\u7684\u6a21\u5757\u6216\u5bf9\u8c61\u8d77\u522b\u540d\u3002\u5728\u5b9e\u9645\u4f7f\u7528\u4e2d\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u8981\u9009\u62e9\u5408\u9002\u7684\u5bfc\u5165\u65b9\u5f0f\u3002<\/strong> \u5176\u4e2d\uff0c\u6700\u5e38\u7528\u7684\u65b9\u5f0f\u662f\u4f7f\u7528<code>import<\/code>\u8bed\u53e5\u5bfc\u5165\u6574\u4e2a\u6a21\u5757\uff0c\u8fd9\u79cd\u65b9\u5f0f\u7b80\u5355\u4e14\u4fbf\u4e8e\u9605\u8bfb\u548c\u7ef4\u62a4\u4ee3\u7801\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecdPython\u6807\u51c6\u5e93\u7684\u5bfc\u5165\u65b9\u6cd5\u53ca\u5176\u4f7f\u7528\u6280\u5de7\u3002<\/p>\n<\/p>\n<p><p>\u4e00\u3001IMPORT\u8bed\u53e5\u5bfc\u5165\u6574\u4e2a\u6a21\u5757<\/p>\n<\/p>\n<p><p>\u4f7f\u7528<code>import<\/code>\u8bed\u53e5\u5bfc\u5165\u6574\u4e2a\u6a21\u5757\u662fPython\u4e2d\u6700\u5e38\u89c1\u7684\u5bfc\u5165\u65b9\u5f0f\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u5f15\u7528\u6a21\u5757\u4e2d\u7684\u6240\u6709\u529f\u80fd\u3002Python\u6807\u51c6\u5e93\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u6a21\u5757\uff0c\u5982<code>os<\/code>\u3001<code>sys<\/code>\u3001<code>math<\/code>\u7b49\uff0c\u8fd9\u4e9b\u6a21\u5757\u90fd\u53ef\u4ee5\u901a\u8fc7<code>import<\/code>\u8bed\u53e5\u8f7b\u677e\u5bfc\u5165\u5e76\u4f7f\u7528\u3002<\/p>\n<\/p>\n<p><p>\u4f8b\u5982\uff0c\u8981\u4f7f\u7528\u6570\u5b66\u51fd\u6570\uff0c\u53ef\u4ee5\u5bfc\u5165<code>math<\/code>\u6a21\u5757\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import math<\/p>\n<h2><strong>\u4f7f\u7528math\u6a21\u5757\u4e2d\u7684sqrt\u51fd\u6570<\/strong><\/h2>\n<p>result = math.sqrt(16)<\/p>\n<p>print(result)  # \u8f93\u51fa\uff1a4.0<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u5f0f\u7684\u4f18\u70b9\u5728\u4e8e\u4ee3\u7801\u6e05\u6670\uff0c\u6a21\u5757\u540d\u79f0\u53ef\u4ee5\u4f5c\u4e3a\u547d\u540d\u7a7a\u95f4\uff0c\u907f\u514d\u4e0e\u5176\u4ed6\u53d8\u91cf\u540d\u51b2\u7a81\u3002\u6b64\u5916\uff0c<code>import<\/code>\u8bed\u53e5\u901a\u5e38\u653e\u5728\u6587\u4ef6\u7684\u5f00\u5934\uff0c\u4fbf\u4e8e\u7ba1\u7406\u3002<\/p>\n<\/p>\n<p><p>\u4e8c\u3001FROM&#8230;IMPORT\u8bed\u53e5\u5bfc\u5165\u7279\u5b9a\u5bf9\u8c61<\/p>\n<\/p>\n<p><p>\u5728\u4e00\u4e9b\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u53ef\u80fd\u53ea\u9700\u8981\u4f7f\u7528\u6a21\u5757\u4e2d\u7684\u67d0\u4e2a\u7279\u5b9a\u529f\u80fd\u3002\u8fd9\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528<code>from...import<\/code>\u8bed\u53e5\uff0c\u53ea\u5bfc\u5165\u9700\u8981\u7684\u5bf9\u8c61\u3002\u8fd9\u79cd\u65b9\u5f0f\u6709\u52a9\u4e8e\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\uff0c\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u547d\u540d\u7a7a\u95f4\u5f00\u9500\u3002<\/p>\n<\/p>\n<p><p>\u4f8b\u5982\uff0c\u53ea\u5bfc\u5165<code>math<\/code>\u6a21\u5757\u4e2d\u7684<code>sqrt<\/code>\u51fd\u6570\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from math import sqrt<\/p>\n<h2><strong>\u76f4\u63a5\u4f7f\u7528sqrt\u51fd\u6570<\/strong><\/h2>\n<p>result = sqrt(25)<\/p>\n<p>print(result)  # \u8f93\u51fa\uff1a5.0<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u5f0f\u7684\u597d\u5904\u662f\u4f7f\u4ee3\u7801\u7b80\u6d01\uff0c\u4f46\u9700\u8981\u6ce8\u610f\u907f\u514d\u4e0e\u5176\u4ed6\u6a21\u5757\u6216\u53d8\u91cf\u540d\u51b2\u7a81\u3002<\/p>\n<\/p>\n<p><p>\u4e09\u3001AS\u5173\u952e\u5b57\u4e3a\u5bfc\u5165\u7684\u6a21\u5757\u6216\u5bf9\u8c61\u8d77\u522b\u540d<\/p>\n<\/p>\n<p><p>\u4e3a\u4e86\u7b80\u5316\u4ee3\u7801\u6216\u907f\u514d\u547d\u540d\u51b2\u7a81\uff0c\u53ef\u4ee5\u4f7f\u7528<code>as<\/code>\u5173\u952e\u5b57\u4e3a\u5bfc\u5165\u7684\u6a21\u5757\u6216\u5bf9\u8c61\u8d77\u522b\u540d\u3002\u8fd9\u5728\u5904\u7406\u957f\u6a21\u5757\u540d\u6216\u591a\u6b21\u5f15\u7528\u65f6\u5c24\u4e3a\u6709\u7528\u3002<\/p>\n<\/p>\n<p><p>\u4f8b\u5982\uff0c\u4e3a<code>numpy<\/code>\u6a21\u5757\u8d77\u522b\u540d<code>np<\/code>\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<h2><strong>\u4f7f\u7528numpy\u6a21\u5757\u4e2d\u7684array\u51fd\u6570<\/strong><\/h2>\n<p>arr = np.array([1, 2, 3])<\/p>\n<p>print(arr)  # \u8f93\u51fa\uff1a[1 2 3]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u5f0f\u80fd\u591f\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\uff0c\u7279\u522b\u662f\u5728\u5904\u7406\u5927\u578b\u9879\u76ee\u6216\u591a\u4e2a\u6a21\u5757\u65f6\u3002<\/p>\n<\/p>\n<p><p>\u56db\u3001\u4f7f\u7528PYTHONPATH\u548c\u73af\u5883\u53d8\u91cf<\/p>\n<\/p>\n<p><p>\u5728\u67d0\u4e9b\u9ad8\u7ea7\u7528\u4f8b\u4e2d\uff0c\u53ef\u80fd\u9700\u8981\u81ea\u5b9a\u4e49\u6a21\u5757\u7684\u641c\u7d22\u8def\u5f84\u3002\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e<code>PYTHONPATH<\/code>\u73af\u5883\u53d8\u91cf\u6216\u5728\u4ee3\u7801\u4e2d\u4fee\u6539<code>sys.path<\/code>\u6765\u5b9e\u73b0\u3002\u8fd9\u79cd\u65b9\u5f0f\u591a\u7528\u4e8e\u5f00\u53d1\u548c\u6d4b\u8bd5\u9636\u6bb5\uff0c\u7528\u4e8e\u5bfc\u5165\u975e\u6807\u51c6\u5e93\u6216\u81ea\u5b9a\u4e49\u6a21\u5757\u3002<\/p>\n<\/p>\n<p><p>\u4f8b\u5982\uff0c\u4e34\u65f6\u6dfb\u52a0\u4e00\u4e2a\u8def\u5f84\u5230<code>sys.path<\/code>\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import sys<\/p>\n<p>sys.path.append(&#39;\/path\/to\/your\/module&#39;)<\/p>\n<p>import your_module<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u867d\u7136\u7075\u6d3b\uff0c\u4f46\u5e94\u8c28\u614e\u4f7f\u7528\uff0c\u4ee5\u514d\u5f71\u54cd\u7a0b\u5e8f\u7684\u7a33\u5b9a\u6027\u3002<\/p>\n<\/p>\n<p><p>\u4e94\u3001\u907f\u514d\u5faa\u73af\u5bfc\u5165<\/p>\n<\/p>\n<p><p>\u5faa\u73af\u5bfc\u5165\u662f\u6307\u4e24\u4e2a\u6216\u591a\u4e2a\u6a21\u5757\u76f8\u4e92\u5bfc\u5165\uff0c\u4ece\u800c\u5f62\u6210\u5faa\u73af\u4f9d\u8d56\u3002\u8fd9\u79cd\u60c5\u51b5\u5bb9\u6613\u5bfc\u81f4\u7a0b\u5e8f\u9519\u8bef\uff0c\u56e0\u6b64\u5e94\u5c3d\u91cf\u907f\u514d\u3002\u89e3\u51b3\u5faa\u73af\u5bfc\u5165\u95ee\u9898\u7684\u5e38\u7528\u65b9\u6cd5\u662f\u91cd\u6784\u4ee3\u7801\uff0c\u5c06\u76f8\u4e92\u4f9d\u8d56\u7684\u90e8\u5206\u63d0\u53d6\u5230\u7b2c\u4e09\u4e2a\u6a21\u5757\u4e2d\u3002<\/p>\n<\/p>\n<p><p>\u516d\u3001\u6a21\u5757\u7684\u52a8\u6001\u5bfc\u5165<\/p>\n<\/p>\n<p><p>\u5728\u67d0\u4e9b\u9ad8\u7ea7\u5e94\u7528\u573a\u666f\u4e2d\uff0c\u53ef\u80fd\u9700\u8981\u6839\u636e\u8fd0\u884c\u65f6\u6761\u4ef6\u52a8\u6001\u5bfc\u5165\u6a21\u5757\u3002\u53ef\u4ee5\u4f7f\u7528<code>importlib<\/code>\u6a21\u5757\u7684<code>import_module<\/code>\u51fd\u6570\u5b9e\u73b0\u52a8\u6001\u5bfc\u5165\u3002<\/p>\n<\/p>\n<p><p>\u4f8b\u5982\uff0c\u6839\u636e\u6761\u4ef6\u5bfc\u5165\u4e0d\u540c\u7684\u6a21\u5757\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import importlib<\/p>\n<p>module_name = &#39;math&#39; if condition else &#39;cmath&#39;<\/p>\n<p>module = importlib.import_module(module_name)<\/p>\n<h2><strong>\u4f7f\u7528\u5bfc\u5165\u7684\u6a21\u5757<\/strong><\/h2>\n<p>result = module.sqrt(9)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u52a8\u6001\u5bfc\u5165\u867d\u7136\u7075\u6d3b\uff0c\u4f46\u4f1a\u589e\u52a0\u4ee3\u7801\u7684\u590d\u6742\u6027\uff0c\u5e94\u8c28\u614e\u4f7f\u7528\u3002<\/p>\n<\/p>\n<p><p>\u4e03\u3001\u603b\u7ed3<\/p>\n<\/p>\n<p><p>Python\u6807\u51c6\u5e93\u7684\u5bfc\u5165\u65b9\u5f0f\u591a\u6837\uff0c\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u5f0f\u3002<strong>\u4f7f\u7528<code>import<\/code>\u8bed\u53e5\u5bfc\u5165\u6574\u4e2a\u6a21\u5757\u3001<code>from...import<\/code>\u8bed\u53e5\u5bfc\u5165\u7279\u5b9a\u5bf9\u8c61\u3001<code>as<\/code>\u5173\u952e\u5b57\u4e3a\u6a21\u5757\u6216\u5bf9\u8c61\u8d77\u522b\u540d<\/strong>\uff0c\u8fd9\u4e9b\u90fd\u662f\u5e38\u7528\u4e14\u6709\u6548\u7684\u5bfc\u5165\u65b9\u5f0f\u3002\u6b64\u5916\uff0c\u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d\uff0c\u5e94\u6ce8\u610f\u907f\u514d\u5faa\u73af\u5bfc\u5165\u548c\u5408\u7406\u4f7f\u7528\u52a8\u6001\u5bfc\u5165\uff0c\u4ee5\u4fdd\u6301\u4ee3\u7801\u7684\u6e05\u6670\u548c\u7a33\u5b9a\u3002\u901a\u8fc7\u5bf9\u5bfc\u5165\u65b9\u5f0f\u7684\u6df1\u5165\u7406\u89e3\u548c\u7075\u6d3b\u5e94\u7528\uff0c\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8Python\u7a0b\u5e8f\u7684\u5f00\u53d1\u6548\u7387\u548c\u4ee3\u7801\u8d28\u91cf\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u5bfc\u5165\u6807\u51c6\u5e93\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u5bfc\u5165\u6807\u51c6\u5e93\u975e\u5e38\u7b80\u5355\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528<code>import<\/code>\u8bed\u53e5\u6765\u5f15\u5165\u6240\u9700\u7684\u6a21\u5757\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u60f3\u4f7f\u7528<code>math<\/code>\u6a21\u5757\uff0c\u53ef\u4ee5\u5728\u4ee3\u7801\u4e2d\u5199\u4e0a<code>import math<\/code>\u3002\u8fd9\u6837\u5c31\u53ef\u4ee5\u4f7f\u7528<code>math<\/code>\u6a21\u5757\u4e2d\u7684\u51fd\u6570\u548c\u5e38\u91cf\u4e86\u3002\u5bf9\u4e8e\u9700\u8981\u4f7f\u7528\u591a\u4e2a\u6807\u51c6\u5e93\u7684\u60c5\u51b5\uff0c\u53ef\u4ee5\u5728\u540c\u4e00\u4e2a\u6587\u4ef6\u4e2d\u591a\u6b21\u4f7f\u7528<code>import<\/code>\u3002<\/p>\n<p><strong>\u4f7f\u7528\u6807\u51c6\u5e93\u7684\u6700\u4f73\u5b9e\u8df5\u662f\u4ec0\u4e48\uff1f<\/strong><br \/>\u5728\u4f7f\u7528Python\u6807\u51c6\u5e93\u65f6\uff0c\u5efa\u8bae\u9075\u5faa\u4e00\u4e9b\u6700\u4f73\u5b9e\u8df5\u3002\u9996\u5148\uff0c\u52a1\u5fc5\u4e86\u89e3\u6240\u4f7f\u7528\u6a21\u5757\u7684\u529f\u80fd\u548c\u9650\u5236\uff0c\u4ee5\u786e\u4fdd\u6b63\u786e\u4f7f\u7528\u3002\u5176\u6b21\uff0c\u9075\u5faa\u547d\u540d\u7ea6\u5b9a\uff0c\u4ee5\u4fdd\u6301\u4ee3\u7801\u7684\u6574\u6d01\u548c\u53ef\u8bfb\u6027\u3002\u6b64\u5916\uff0c\u53ef\u4ee5\u4f7f\u7528Python\u7684\u6587\u6863\u548c\u5728\u7ebf\u8d44\u6e90\u6765\u83b7\u53d6\u66f4\u591a\u5173\u4e8e\u6807\u51c6\u5e93\u7684\u4f7f\u7528\u793a\u4f8b\u548c\u8be6\u7ec6\u8bf4\u660e\u3002<\/p>\n<p><strong>\u5982\u4f55\u67e5\u770bPython\u6807\u51c6\u5e93\u4e2d\u7684\u53ef\u7528\u6a21\u5757\uff1f<\/strong><br \/>\u8981\u67e5\u770bPython\u6807\u51c6\u5e93\u4e2d\u53ef\u7528\u7684\u6a21\u5757\uff0c\u53ef\u4ee5\u8bbf\u95eePython\u7684\u5b98\u65b9\u6587\u6863\u7f51\u7ad9\u3002\u6587\u6863\u4e2d\u5217\u51fa\u4e86\u6240\u6709\u6807\u51c6\u5e93\u6a21\u5757\uff0c\u5e76\u63d0\u4f9b\u4e86\u8be6\u7ec6\u7684\u4f7f\u7528\u8bf4\u660e\u548c\u793a\u4f8b\u4ee3\u7801\u3002\u6b64\u5916\uff0c\u4f60\u53ef\u4ee5\u5728Python\u4ea4\u4e92\u5f0f\u547d\u4ee4\u884c\u4e2d\u4f7f\u7528<code>help(&#39;modules&#39;)<\/code>\u547d\u4ee4\u6765\u5217\u51fa\u5f53\u524d\u73af\u5883\u4e2d\u53ef\u7528\u7684\u6a21\u5757\uff0c\u4ee5\u4fbf\u5feb\u901f\u67e5\u627e\u4f60\u9700\u8981\u7684\u5e93\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u6807\u51c6\u5e93\u7684\u5bfc\u5165\u65b9\u5f0f\u6709\uff1a\u4f7f\u7528import\u8bed\u53e5\u5bfc\u5165\u6574\u4e2a\u6a21\u5757\u3001\u4f7f\u7528from&#8230;import\u8bed\u53e5\u5bfc 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