{"id":1129764,"date":"2025-01-08T20:32:27","date_gmt":"2025-01-08T12:32:27","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1129764.html"},"modified":"2025-01-08T20:32:29","modified_gmt":"2025-01-08T12:32:29","slug":"python%e4%b8%ad%e7%99%be%e5%88%86%e6%95%b0%e5%a6%82%e4%bd%95%e8%a1%a8%e8%be%be","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1129764.html","title":{"rendered":"python\u4e2d\u767e\u5206\u6570\u5982\u4f55\u8868\u8fbe"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25100052\/d6180585-5d9d-4f24-9299-cb040c65fee5.webp\" alt=\"python\u4e2d\u767e\u5206\u6570\u5982\u4f55\u8868\u8fbe\" \/><\/p>\n<p><p> <strong>\u5728Python\u4e2d\uff0c\u767e\u5206\u6570\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u6cd5\u8fdb\u884c\u8868\u8fbe\u548c\u5904\u7406\uff0c\u5305\u62ec\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u3001\u6570\u5b66\u8ba1\u7b97\u548c\u6570\u636e\u53ef\u89c6\u5316\u3002<\/strong>\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u5b9e\u9645\u4ee3\u7801\u793a\u4f8b\u6765\u5e2e\u52a9\u4f60\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u5b57\u7b26\u4e32\u683c\u5f0f\u5316<\/h3>\n<\/p>\n<p><p>\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u662f\u5904\u7406\u767e\u5206\u6570\u7684\u5e38\u89c1\u65b9\u6cd5\u4e4b\u4e00\u3002Python \u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u5f0f\u6765\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\uff0c\u5176\u4e2d\u5305\u62ec\u767e\u5206\u6bd4\u683c\u5f0f\u5316\u3002<\/p>\n<\/p>\n<p><h4>1.1\u3001\u4f7f\u7528 format() \u65b9\u6cd5<\/h4>\n<\/p>\n<p><p>Python \u7684 <code>format()<\/code> \u65b9\u6cd5\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u5141\u8bb8\u6211\u4eec\u4ee5\u591a\u79cd\u65b9\u5f0f\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u3002\u8981\u8868\u793a\u767e\u5206\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>:.2%<\/code> \u8fd9\u6837\u7684\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\uff0c\u5176\u4e2d <code>:.2%<\/code> \u8868\u793a\u5c06\u6570\u5b57\u683c\u5f0f\u5316\u4e3a\u767e\u5206\u6bd4\uff0c\u5e76\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">number = 0.85<\/p>\n<p>formatted_number = &quot;{:.2%}&quot;.format(number)<\/p>\n<p>print(formatted_number)  # \u8f93\u51fa\uff1a85.00%<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>1.2\u3001\u4f7f\u7528 f-string<\/h4>\n<\/p>\n<p><p>Python 3.6 \u5f15\u5165\u4e86 f-string\uff08\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u5b57\u9762\u503c\uff09\uff0c\u8fd9\u4f7f\u5f97\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u66f4\u52a0\u7b80\u6d01\u548c\u6613\u8bfb\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">number = 0.85<\/p>\n<p>formatted_number = f&quot;{number:.2%}&quot;<\/p>\n<p>print(formatted_number)  # \u8f93\u51fa\uff1a85.00%<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e8c\u3001\u6570\u5b66\u8ba1\u7b97<\/h3>\n<\/p>\n<p><p>\u5728\u5904\u7406\u6570\u636e\u65f6\uff0c\u53ef\u80fd\u9700\u8981\u8fdb\u884c\u4e00\u4e9b\u6570\u5b66\u8ba1\u7b97\u6765\u5f97\u5230\u767e\u5206\u6bd4\u3002\u4ee5\u4e0b\u662f\u51e0\u4e2a\u5e38\u89c1\u7684\u4f8b\u5b50\u3002<\/p>\n<\/p>\n<p><h4>2.1\u3001\u8ba1\u7b97\u767e\u5206\u6bd4<\/h4>\n<\/p>\n<p><p>\u5047\u8bbe\u4f60\u6709\u4e24\u4e2a\u6570\u5b57\uff0c\u60f3\u8981\u8ba1\u7b97\u5176\u4e2d\u4e00\u4e2a\u6570\u5b57\u5360\u53e6\u4e00\u4e2a\u6570\u5b57\u7684\u767e\u5206\u6bd4\uff0c\u53ef\u4ee5\u4f7f\u7528\u57fa\u672c\u7684\u6570\u5b66\u8fd0\u7b97\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">part = 45<\/p>\n<p>whole = 60<\/p>\n<p>percentage = (part \/ whole) * 100<\/p>\n<p>print(f&quot;{percentage:.2f}%&quot;)  # \u8f93\u51fa\uff1a75.00%<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2.2\u3001\u589e\u52a0\u6216\u51cf\u5c11\u767e\u5206\u6bd4<\/h4>\n<\/p>\n<p><p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u589e\u52a0\u6216\u51cf\u5c11\u4e00\u4e2a\u6570\u503c\u7684\u767e\u5206\u6bd4\u3002\u4f8b\u5982\uff0c\u8ba1\u7b97\u589e\u52a020%\u540e\u7684\u503c\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">original_value = 100<\/p>\n<p>increase_percentage = 20<\/p>\n<p>new_value = original_value * (1 + increase_percentage \/ 100)<\/p>\n<p>print(new_value)  # \u8f93\u51fa\uff1a120.0<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e09\u3001\u6570\u636e\u53ef\u89c6\u5316<\/h3>\n<\/p>\n<p><p>\u767e\u5206\u6bd4\u5728\u6570\u636e\u53ef\u89c6\u5316\u4e2d\u4e5f\u662f\u975e\u5e38\u5e38\u89c1\u7684\uff0c\u4f8b\u5982\u5728\u997c\u56fe\u3001\u67f1\u72b6\u56fe\u7b49\u56fe\u8868\u4e2d\u3002Python \u7684\u6570\u636e\u53ef\u89c6\u5316\u5e93\u5982 Matplotlib \u548c Seaborn \u63d0\u4f9b\u4e86\u7b80\u5355\u7684\u65b9\u6cd5\u6765\u663e\u793a\u767e\u5206\u6bd4\u3002<\/p>\n<\/p>\n<p><h4>3.1\u3001\u4f7f\u7528 Matplotlib \u663e\u793a\u767e\u5206\u6bd4<\/h4>\n<\/p>\n<p><p>Matplotlib \u662f\u4e00\u4e2a\u5e7f\u6cdb\u4f7f\u7528\u7684\u7ed8\u56fe\u5e93\uff0c\u652f\u6301\u591a\u79cd\u7c7b\u578b\u7684\u56fe\u8868\u3002\u4ee5\u4e0b\u793a\u4f8b\u663e\u793a\u4e86\u5982\u4f55\u5728\u997c\u56fe\u4e2d\u4f7f\u7528\u767e\u5206\u6bd4\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import matplotlib.pyplot as plt<\/p>\n<p>labels = [&#39;A&#39;, &#39;B&#39;, &#39;C&#39;, &#39;D&#39;]<\/p>\n<p>sizes = [15, 30, 45, 10]<\/p>\n<p>explode = (0, 0.1, 0, 0)  # \u7a81\u51fa\u663e\u793a\u7b2c\u4e8c\u4e2a\u5207\u7247<\/p>\n<p>plt.pie(sizes, explode=explode, labels=labels, autopct=&#39;%1.1f%%&#39;, startangle=140)<\/p>\n<p>plt.axis(&#39;equal&#39;)  # \u786e\u4fdd\u997c\u56fe\u662f\u5706\u5f62<\/p>\n<p>plt.show()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>3.2\u3001\u4f7f\u7528 Seaborn \u663e\u793a\u767e\u5206\u6bd4<\/h4>\n<\/p>\n<p><p>Seaborn \u662f\u4e00\u4e2a\u57fa\u4e8e Matplotlib \u7684\u9ad8\u7ea7\u6570\u636e\u53ef\u89c6\u5316\u5e93\uff0c\u63d0\u4f9b\u4e86\u4e00\u4e9b\u4fbf\u6377\u7684\u529f\u80fd\u6765\u5904\u7406\u548c\u663e\u793a\u767e\u5206\u6bd4\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import seaborn as sns<\/p>\n<p>import matplotlib.pyplot as plt<\/p>\n<p>data = sns.load_dataset(&quot;titanic&quot;)<\/p>\n<p>sns.barplot(x=&quot;class&quot;, y=&quot;survived&quot;, data=data, estimator=lambda x: sum(x) \/ len(x) * 100)<\/p>\n<p>plt.ylabel(&quot;Survival Rate (%)&quot;)<\/p>\n<p>plt.show()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u56db\u3001\u5904\u7406 Pandas \u6570\u636e\u6846\u4e2d\u7684\u767e\u5206\u6bd4<\/h3>\n<\/p>\n<p><p>Pandas \u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u6570\u636e\u5904\u7406\u5e93\uff0c\u5e7f\u6cdb\u7528\u4e8e\u6570\u636e\u5206\u6790\u548c\u6570\u636e\u64cd\u4f5c\u3002\u4ee5\u4e0b\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u5728 Pandas \u6570\u636e\u6846\u4e2d\u5904\u7406\u767e\u5206\u6bd4\u3002<\/p>\n<\/p>\n<p><h4>4.1\u3001\u8ba1\u7b97\u5217\u7684\u767e\u5206\u6bd4<\/h4>\n<\/p>\n<p><p>\u5047\u8bbe\u4f60\u6709\u4e00\u4e2a\u5305\u542b\u9500\u552e\u6570\u636e\u7684 Pandas \u6570\u636e\u6846\uff0c\u73b0\u5728\u4f60\u60f3\u8981\u8ba1\u7b97\u6bcf\u4e2a\u4ea7\u54c1\u7684\u9500\u552e\u989d\u5360\u603b\u9500\u552e\u989d\u7684\u767e\u5206\u6bd4\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<p>data = {&#39;Product&#39;: [&#39;A&#39;, &#39;B&#39;, &#39;C&#39;, &#39;D&#39;], &#39;Sales&#39;: [200, 150, 400, 250]}<\/p>\n<p>df = pd.DataFrame(data)<\/p>\n<p>df[&#39;Percentage&#39;] = df[&#39;Sales&#39;] \/ df[&#39;Sales&#39;].sum() * 100<\/p>\n<p>print(df)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>4.2\u3001\u683c\u5f0f\u5316\u6570\u636e\u6846\u4e2d\u7684\u767e\u5206\u6bd4<\/h4>\n<\/p>\n<p><p>\u4f60\u53ef\u80fd\u8fd8\u60f3\u8981\u4ee5\u767e\u5206\u6bd4\u683c\u5f0f\u663e\u793a\u8fd9\u4e9b\u8ba1\u7b97\u7ed3\u679c\u3002\u53ef\u4ee5\u4f7f\u7528 Pandas \u7684 <code>applymap()<\/code> \u51fd\u6570\u6765\u5b9e\u73b0\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">df[&#39;Formatted Percentage&#39;] = df[&#39;Percentage&#39;].apply(lambda x: f&quot;{x:.2f}%&quot;)<\/p>\n<p>print(df)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e94\u3001Python \u4e2d\u7684\u767e\u5206\u6bd4\u76f8\u5173\u5e93<\/h3>\n<\/p>\n<p><p>\u9664\u4e86\u4e0a\u8ff0\u65b9\u6cd5\uff0cPython \u751f\u6001\u7cfb\u7edf\u4e2d\u8fd8\u6709\u4e00\u4e9b\u4e13\u95e8\u7528\u4e8e\u5904\u7406\u767e\u5206\u6bd4\u7684\u5e93\u3002\u8fd9\u4e9b\u5e93\u63d0\u4f9b\u4e86\u9ad8\u7ea7\u529f\u80fd\uff0c\u4f7f\u5f97\u5904\u7406\u767e\u5206\u6bd4\u66f4\u52a0\u7b80\u4fbf\u3002<\/p>\n<\/p>\n<p><h4>5.1\u3001\u4f7f\u7528 percentage.py \u5e93<\/h4>\n<\/p>\n<p><p><code>percentage.py<\/code> \u662f\u4e00\u4e2a\u7b80\u5355\u4f46\u5b9e\u7528\u7684\u5e93\uff0c\u4e13\u95e8\u7528\u4e8e\u5904\u7406\u767e\u5206\u6bd4\u8ba1\u7b97\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u57fa\u672c\u793a\u4f8b\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from percentage import percentage<\/p>\n<h2><strong>\u8ba1\u7b97\u767e\u5206\u6bd4<\/strong><\/h2>\n<p>result = percentage(45, 60)<\/p>\n<p>print(result)  # \u8f93\u51fa\uff1a75.0<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>5.2\u3001\u4f7f\u7528 NumPy \u8fdb\u884c\u767e\u5206\u6bd4\u8ba1\u7b97<\/h4>\n<\/p>\n<p><p>NumPy \u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u6570\u503c\u8ba1\u7b97\u5e93\uff0c\u867d\u7136\u5b83\u4e3b\u8981\u7528\u4e8e\u6570\u7ec4\u548c\u77e9\u9635\u8ba1\u7b97\uff0c\u4f46\u4e5f\u53ef\u4ee5\u7528\u4e8e\u767e\u5206\u6bd4\u8ba1\u7b97\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<p>array = np.array([15, 30, 45, 10])<\/p>\n<p>percentage_array = array \/ np.sum(array) * 100<\/p>\n<p>print(percentage_array)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u516d\u3001\u767e\u5206\u6570\u5728\u4e0d\u540c\u573a\u666f\u4e2d\u7684\u5e94\u7528<\/h3>\n<\/p>\n<p><p>\u767e\u5206\u6570\u7684\u5e94\u7528\u8303\u56f4\u975e\u5e38\u5e7f\u6cdb\uff0c\u4ece\u91d1\u878d\u5230\u6559\u80b2\uff0c\u518d\u5230\u6570\u636e\u5206\u6790\u548c\u79d1\u5b66\u7814\u7a76\uff0c\u51e0\u4e4e\u6bcf\u4e2a\u9886\u57df\u90fd\u4f1a\u7528\u5230\u767e\u5206\u6570\u3002\u4ee5\u4e0b\u662f\u51e0\u4e2a\u5177\u4f53\u7684\u5e94\u7528\u573a\u666f\u3002<\/p>\n<\/p>\n<p><h4>6.1\u3001\u91d1\u878d\u9886\u57df\u4e2d\u7684\u767e\u5206\u6570<\/h4>\n<\/p>\n<p><p>\u5728\u91d1\u878d\u9886\u57df\uff0c\u767e\u5206\u6570\u7528\u4e8e\u8868\u793a\u5229\u7387\u3001\u6295\u8d44\u56de\u62a5\u7387\u548c\u5176\u4ed6\u91cd\u8981\u6307\u6807\u3002\u4f8b\u5982\uff0c\u8ba1\u7b97\u5e74\u5316\u6536\u76ca\u7387\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">initial_investment = 1000<\/p>\n<p>final_amount = 1200<\/p>\n<p>years = 1<\/p>\n<p>annual_return_rate = ((final_amount \/ initial_investment)  (1 \/ years) - 1) * 100<\/p>\n<p>print(f&quot;Annual Return Rate: {annual_return_rate:.2f}%&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>6.2\u3001\u6559\u80b2\u9886\u57df\u4e2d\u7684\u767e\u5206\u6570<\/h4>\n<\/p>\n<p><p>\u5728\u6559\u80b2\u9886\u57df\uff0c\u767e\u5206\u6570\u901a\u5e38\u7528\u4e8e\u8868\u793a\u8003\u8bd5\u6210\u7ee9\u548c\u901a\u8fc7\u7387\u3002\u4f8b\u5982\uff0c\u8ba1\u7b97\u5b66\u751f\u7684\u8003\u8bd5\u6210\u7ee9\u767e\u5206\u6bd4\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">total_marks = 500<\/p>\n<p>marks_obt<a href=\"https:\/\/docs.pingcode.com\/blog\/59162.html\" target=\"_blank\">AI<\/a>ned = 450<\/p>\n<p>percentage = (marks_obtained \/ total_marks) * 100<\/p>\n<p>print(f&quot;Exam Percentage: {percentage:.2f}%&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>6.3\u3001\u6570\u636e\u5206\u6790\u4e2d\u7684\u767e\u5206\u6570<\/h4>\n<\/p>\n<p><p>\u5728\u6570\u636e\u5206\u6790\u4e2d\uff0c\u767e\u5206\u6570\u7528\u4e8e\u8868\u793a\u5404\u79cd\u6bd4\u4f8b\u548c\u5206\u5e03\uff0c\u4f8b\u5982\u7f51\u7ad9\u8bbf\u95ee\u91cf\u7684\u6765\u6e90\u5206\u5e03\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">sources = [&#39;Direct&#39;, &#39;Referral&#39;, &#39;Social&#39;, &#39;Organic&#39;]<\/p>\n<p>visits = [1500, 300, 450, 750]<\/p>\n<p>total_visits = sum(visits)<\/p>\n<p>visits_percentage = [(visit \/ total_visits) * 100 for visit in visits]<\/p>\n<p>for source, percentage in zip(sources, visits_percentage):<\/p>\n<p>    print(f&quot;{source}: {percentage:.2f}%&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e03\u3001\u5e38\u89c1\u9519\u8bef\u548c\u89e3\u51b3\u65b9\u6cd5<\/h3>\n<\/p>\n<p><p>\u5728\u5904\u7406\u767e\u5206\u6570\u65f6\uff0c\u6709\u4e00\u4e9b\u5e38\u89c1\u7684\u9519\u8bef\u9700\u8981\u6ce8\u610f\uff0c\u5e76\u4e14\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e9b\u6280\u5de7\u6765\u907f\u514d\u3002<\/p>\n<\/p>\n<p><h4>7.1\u3001\u5fd8\u8bb0\u4e58\u4ee5 100<\/h4>\n<\/p>\n<p><p>\u4e00\u4e2a\u5e38\u89c1\u7684\u9519\u8bef\u662f\u5fd8\u8bb0\u5c06\u5c0f\u6570\u8f6c\u6362\u4e3a\u767e\u5206\u6570\uff0c\u5373\u5fd8\u8bb0\u4e58\u4ee5 100\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">part = 45<\/p>\n<p>whole = 60<\/p>\n<p>percentage = part \/ whole  # \u9519\u8bef\uff0c\u5e94\u8be5\u4e58\u4ee5 100<\/p>\n<p>print(percentage)  # \u8f93\u51fa\uff1a0.75<\/p>\n<p>correct_percentage = (part \/ whole) * 100<\/p>\n<p>print(correct_percentage)  # \u8f93\u51fa\uff1a75.0<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>7.2\u3001\u6570\u503c\u6ea2\u51fa<\/h4>\n<\/p>\n<p><p>\u5728\u8ba1\u7b97\u5927\u6570\u503c\u65f6\uff0c\u53ef\u80fd\u4f1a\u9047\u5230\u6570\u503c\u6ea2\u51fa\u7684\u95ee\u9898\u3002\u89e3\u51b3\u65b9\u6cd5\u662f\u4f7f\u7528\u9002\u5f53\u7684\u6570\u636e\u7c7b\u578b\uff0c\u4f8b\u5982\u4f7f\u7528 NumPy \u7684\u5927\u6570\u503c\u7c7b\u578b\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<p>large_number = np.float64(1e308)<\/p>\n<p>percentage = large_number \/ 1e3 * 100  # \u6b63\u786e\u5904\u7406\u5927\u6570\u503c<\/p>\n<p>print(percentage)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u516b\u3001\u6700\u4f73\u5b9e\u8df5\u548c\u6280\u5de7<\/h3>\n<\/p>\n<p><p>\u4e3a\u4e86\u786e\u4fdd\u767e\u5206\u6570\u8ba1\u7b97\u7684\u51c6\u786e\u6027\u548c\u53ef\u8bfb\u6027\uff0c\u6709\u4e00\u4e9b\u6700\u4f73\u5b9e\u8df5\u548c\u6280\u5de7\u53ef\u4ee5\u53c2\u8003\u3002<\/p>\n<\/p>\n<p><h4>8.1\u3001\u4f7f\u7528\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668<\/h4>\n<\/p>\n<p><p>\u5728\u8fdb\u884c\u591a\u4e2a\u767e\u5206\u6570\u8ba1\u7b97\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668\u6765\u4fdd\u6301\u4ee3\u7801\u7684\u7b80\u6d01\u548c\u53ef\u8bfb\u6027\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from contextlib import contextmanager<\/p>\n<p>@contextmanager<\/p>\n<p>def percentage_context(precision=2):<\/p>\n<p>    def format_percentage(value):<\/p>\n<p>        return f&quot;{value:.{precision}f}%&quot;<\/p>\n<p>    yield format_percentage<\/p>\n<p>with percentage_context(precision=2) as fmt:<\/p>\n<p>    print(fmt(75))  # \u8f93\u51fa\uff1a75.00%<\/p>\n<p>    print(fmt(85.567))  # \u8f93\u51fa\uff1a85.57%<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>8.2\u3001\u4f7f\u7528\u81ea\u5b9a\u4e49\u51fd\u6570<\/h4>\n<\/p>\n<p><p>\u521b\u5efa\u81ea\u5b9a\u4e49\u51fd\u6570\u6765\u5904\u7406\u5e38\u89c1\u7684\u767e\u5206\u6570\u8ba1\u7b97\uff0c\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u590d\u7528\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">def calculate_percentage(part, whole):<\/p>\n<p>    return (part \/ whole) * 100<\/p>\n<p>def format_percentage(value, precision=2):<\/p>\n<p>    return f&quot;{value:.{precision}f}%&quot;<\/p>\n<p>part = 45<\/p>\n<p>whole = 60<\/p>\n<p>percentage = calculate_percentage(part, whole)<\/p>\n<p>formatted_percentage = format_percentage(percentage)<\/p>\n<p>print(formatted_percentage)  # \u8f93\u51fa\uff1a75.00%<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7\u4ee5\u4e0a\u8be6\u7ec6\u7684\u4ecb\u7ecd\u548c\u5b9e\u9645\u4ee3\u7801\u793a\u4f8b\uff0c\u76f8\u4fe1\u4f60\u5df2\u7ecf\u5bf9\u5982\u4f55\u5728 Python \u4e2d\u5904\u7406\u767e\u5206\u6570\u6709\u4e86\u6df1\u5165\u7684\u7406\u89e3\u3002\u65e0\u8bba\u662f\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u3001\u6570\u5b66\u8ba1\u7b97\uff0c\u8fd8\u662f\u6570\u636e\u53ef\u89c6\u5316\uff0cPython \u90fd\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u5de5\u5177\u548c\u65b9\u6cd5\u6765\u5e2e\u52a9\u4f60\u9ad8\u6548\u5730\u5904\u7406\u767e\u5206\u6570\u3002\u5e0c\u671b\u8fd9\u7bc7\u6587\u7ae0\u80fd\u4e3a\u4f60\u7684 Python \u7f16\u7a0b\u4e4b\u8def\u63d0\u4f9b\u4e00\u4e9b\u6709\u4ef7\u503c\u7684\u53c2\u8003\u548c\u5e2e\u52a9\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5728Python\u4e2d\u5982\u4f55\u5c06\u5c0f\u6570\u8f6c\u6362\u4e3a\u767e\u5206\u6570\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u6216<code>format()<\/code>\u51fd\u6570\u5c06\u5c0f\u6570\u8f6c\u6362\u4e3a\u767e\u5206\u6570\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32<code>f&quot;{value:.2%}&quot;<\/code>\u53ef\u4ee5\u5c06\u5c0f\u6570\u503c\u8f6c\u6362\u4e3a\u767e\u5206\u6570\u5e76\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u3002\u8fd9\u6837\uff0c\u5982\u679c\u4f60\u6709\u4e00\u4e2a\u5c0f\u65700.75\uff0c\u8f93\u51fa\u5c06\u662f75.00%\u3002\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528<code>format()<\/code>\u51fd\u6570\uff0c<code>format(value, &quot;.2%&quot;)<\/code>\u4e5f\u80fd\u8fbe\u5230\u76f8\u540c\u7684\u6548\u679c\u3002<\/p>\n<p><strong>\u5982\u4f55\u5728Python\u4e2d\u8fdb\u884c\u767e\u5206\u6570\u7684\u52a0\u51cf\u8fd0\u7b97\uff1f<\/strong><br \/>\u5728\u8fdb\u884c\u767e\u5206\u6570\u7684\u52a0\u51cf\u8fd0\u7b97\u65f6\uff0c\u9996\u5148\u9700\u8981\u5c06\u767e\u5206\u6570\u8f6c\u6362\u4e3a\u5c0f\u6570\u8fdb\u884c\u8ba1\u7b97\u3002\u4f8b\u5982\uff0c\u82e5\u6709\u4e24\u4e2a\u767e\u5206\u657025%\u548c30%\uff0c\u5728\u8ba1\u7b97\u5b83\u4eec\u7684\u548c\u65f6\uff0c\u9700\u5c06\u5b83\u4eec\u8f6c\u6362\u4e3a0.25\u548c0.30\uff0c\u8ba1\u7b97\u540e\u518d\u8f6c\u6362\u56de\u767e\u5206\u6570\uff0c\u7ed3\u679c\u4e3a55%\u3002\u53ef\u4ee5\u4f7f\u7528\u4e0a\u8ff0\u7684\u683c\u5f0f\u5316\u65b9\u6cd5\u5c06\u7ed3\u679c\u8f6c\u56de\u767e\u5206\u6570\u683c\u5f0f\u3002<\/p>\n<p><strong>\u5982\u4f55\u5728Python\u4e2d\u5904\u7406\u5e26\u6709\u767e\u5206\u6570\u7684\u5b57\u7b26\u4e32\uff1f<\/strong><br \/>\u5982\u679c\u9700\u8981\u5904\u7406\u5e26\u6709\u767e\u5206\u6570\u7684\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u7684<code>replace()<\/code>\u65b9\u6cd5\u53bb\u6389\u767e\u5206\u53f7\uff0c\u8f6c\u6362\u4e3a\u5c0f\u6570\u8fdb\u884c\u8ba1\u7b97\u3002\u6bd4\u5982\uff0c\u5b57\u7b26\u4e32&quot;45%&quot;\u53ef\u4ee5\u901a\u8fc7<code>float(value.replace(&#39;%&#39;, &#39;&#39;)) \/ 100<\/code>\u8f6c\u6362\u4e3a\u5c0f\u65700.45\uff0c\u8fd9\u6837\u4fbf\u4e8e\u540e\u7eed\u7684\u6570\u5b66\u8fd0\u7b97\u3002\u5904\u7406\u5b8c\u6210\u540e\uff0c\u8bb0\u5f97\u5728\u8f93\u51fa\u65f6\u5c06\u7ed3\u679c\u683c\u5f0f\u5316\u4e3a\u767e\u5206\u6570\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u767e\u5206\u6570\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u6cd5\u8fdb\u884c\u8868\u8fbe\u548c\u5904\u7406\uff0c\u5305\u62ec\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u3001\u6570\u5b66\u8ba1\u7b97\u548c\u6570\u636e\u53ef\u89c6\u5316\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd [&hellip;]","protected":false},"author":3,"featured_media":1129771,"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\/1129764"}],"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=1129764"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1129764\/revisions"}],"predecessor-version":[{"id":1129776,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1129764\/revisions\/1129776"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1129771"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1129764"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1129764"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1129764"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}