{"id":151,"date":"2023-12-10T21:57:02","date_gmt":"2023-12-10T13:57:02","guid":{"rendered":"https:\/\/blog.zwdblog.online\/?p=151"},"modified":"2023-12-28T23:06:00","modified_gmt":"2023-12-28T15:06:00","slug":"python%e6%95%b0%e6%8d%ae%e9%a2%84%e5%a4%84%e7%90%86","status":"publish","type":"post","link":"https:\/\/blog.zwdblog.online\/index.php\/2023\/12\/10\/python%e6%95%b0%e6%8d%ae%e9%a2%84%e5%a4%84%e7%90%86\/","title":{"rendered":"python\u6570\u636e\u9884\u5904\u7406\u57fa\u672c\u64cd\u4f5c"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u5bf9\u6570\u636e\u7684\u9884\u5904\u7406\u662f\u57fa\u4e8ejupyter notebook<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1\u3001\u8bfb\u53d6\u4e00\u4e2acsv\u6587\u4ef6\u5185\u5bb9\uff08\u4ee5\u5b89\u5c45\u5ba2\u4e8c\u624b\u623f\u6e9020\u6761\u6570\u636e\u4e3a\u4f8b\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import pandas as pd\n\ndf = pd.read_csv('\u5b89\u5c45\u5ba2\u623f\u6e90.csv')  #\u62ec\u53f7\u5185\u662f\u6b64\u6587\u4ef6\u5939\u5b58\u653e\u5730\u5740 \r\ndf.head(20)   #\u663e\u793a\u4e86\u6240\u6709\u7684\u6570\u636e20\u6761<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"624\" height=\"789\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-27.png\" alt=\"\u5b89\u5c45\u5ba2\u623f\u6e90\u6570\u636e\" class=\"wp-image-152\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-27.png 624w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-27-237x300.png 237w\" sizes=\"auto, (max-width: 624px) 100vw, 624px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">2\u3001\u8bfb\u53d6\u4fe1\u606f\u6570\u91cf\u4e0e\u7c7b\u578b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>df.info()<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"399\" height=\"333\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-28.png\" alt=\"\u5404\u7c7b\u578b\u6570\u636e\u6570\u91cf\u4e0e\u7c7b\u578b\" class=\"wp-image-153\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-28.png 399w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-28-300x250.png 300w\" sizes=\"auto, (max-width: 399px) 100vw, 399px\" \/><figcaption class=\"wp-element-caption\">\u53ef\u770b\u5230\u603b\u4ef7\u670920\u4e2a\u975e\u7a7a\u6570\u636e\uff0c\u7c7b\u578b\u4e3afloat\uff08\u4f9d\u6b21\u5f80\u4e0b\uff09<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">3\u3001\u5220\u9664\u91cd\u590d\u5217\uff0c\u4ee5\u671d\u5411\u4e3a\u4f8b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>df1 = df.drop_duplicates(&#91;'\u671d\u5411'],inplace=False) #\u4e0d\u66ff\u6362\u6389\u539f\u59cb\u7684df\uff08inplace=False\uff09\r\nprint(df1)<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"601\" height=\"104\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-30.png\" alt=\"\" class=\"wp-image-156\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-30.png 601w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-30-300x52.png 300w\" sizes=\"auto, (max-width: 601px) 100vw, 601px\" \/><figcaption class=\"wp-element-caption\">\u5269\u5357\u3001\u5357\u5317\u3001\u4e1c\u897f<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">4\u3001\u8ba1\u6570\uff08\u8ba1df1\u6bcf\u4e00\u5217\u6709\u591a\u5c11\u4e2a\u6570\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>df1.count()<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"188\" height=\"194\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-31.png\" alt=\"\" class=\"wp-image-157\"\/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">5\u3001\u6807\u8bc6\u7f3a\u5931\u503c\u4e2a\u6570\u5e76\u4ece\u5927\u5230\u5c0f\u6392\u5e8f\uff08\u4ee5\u4e0a\u8ff0csv\u6587\u4ef6\u5185\u5bb9\u4e3a\u4f8b\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>total = df.isnull().sum().sort_values(ascending =False) \r\nprint(total)<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"216\" height=\"201\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-32.png\" alt=\"\" class=\"wp-image-158\"\/><figcaption class=\"wp-element-caption\">\u5ba4\u7f3a\u4e09\u4e2a\uff0c\u5385\u7f3a\u4e09\u4e2a\u4f9d\u6b21\u5f80\u540e\u770b<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">6\u3001\u7528\u7f3a\u7701\u503c\u753b\u6761\u5f62\u56fe<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from matplotlib import pyplot as plot\r\nplot.rcParams&#91;'font.sans-serif'] = \"Microsoft YaHei\" \r  #\u8bbe\u7f6e Matplotlib \u4e2d\u6587\u663e\u793a\u7684\u5b57\u4f53\u4e3a \"Microsoft YaHei\"\u3002(\u5fae\u8f6f\u96c5\u9ed1\uff09\r\ntotal.plot.bar()  <\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"701\" height=\"607\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-33.png\" alt=\"\u6761\u5f62\u56fe\" class=\"wp-image-160\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-33.png 701w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-33-300x260.png 300w\" sizes=\"auto, (max-width: 701px) 100vw, 701px\" \/><figcaption class=\"wp-element-caption\">\u5ba4\u4e0e\u5385\u4e3a3\uff0c\u5176\u4f59\u4e3a0\uff0c\u4e0e\u4e0a\u8ff0\u7edf\u8ba1\u7684\u4e00\u6837<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">7\u3001\u7f3a\u7701\u503c\u6309\u767e\u5206\u6bd4\u964d\u5e8f\u6392\u5217<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>percentage = (df.isnull().sum()\/len(df)).sort_values(ascending = False)  #ascending = False\u964d\u5e8f\u6392\u5217\r\nprint(percentage)<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"249\" height=\"202\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-34.png\" alt=\"\" class=\"wp-image-161\"\/><figcaption class=\"wp-element-caption\">\u7f3a\u5931\u503c\u767e\u5206\u6bd4\uff1a\u7f3a\u5931\u4e2a\u6570\u9664\u4ee5\u603b\u6570<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">8\u3001\u7f3a\u5931\u7387\u6c34\u5e73\u6761\u5f62\u56fe\u5c55\u793a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>percentage.plot.barh()<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"756\" height=\"536\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-35.png\" alt=\"\u6c34\u5e73\u6761\u5f62\u56fe\" class=\"wp-image-162\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-35.png 756w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-35-300x213.png 300w\" sizes=\"auto, (max-width: 756px) 100vw, 756px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">9\u3001\u628acsv\u6587\u4ef6\u91cc\u7684\u603b\u4ef7\u7528\u7bb1\u7ebf\u56fe\u8868\u793a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>df&#91;'\u603b\u4ef7\uff08\u4e07\uff09'].plot.box() <\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"686\" height=\"545\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-36.png\" alt=\"\u7bb1\u7ebf\u56fe\" class=\"wp-image-163\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-36.png 686w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-36-300x238.png 300w\" sizes=\"auto, (max-width: 686px) 100vw, 686px\" \/><figcaption class=\"wp-element-caption\">\u7bb1\u7ebf\u56fe\uff1a\u4e00\u79cd\u53ef\u89c6\u5316\u5de5\u5177\uff0c\u7528\u4e8e\u5c55\u793a\u6570\u636e\u7684\u5206\u5e03\u60c5\u51b5\u3001\u4e2d\u4f4d\u6570\u3001\u56db\u5206\u4f4d\u6570\u548c\u5f02\u5e38\u503c\u3002<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">10\u3001\u603b\u4ef7\u76f4\u65b9\u56fe\uff08\u7eb5\u5750\u6807\u662f\u6b64\u4ef7\u683c\u7684\u4e2a\u6570\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>df&#91;'\u603b\u4ef7\uff08\u4e07\uff09'].plot.hist()<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"726\" height=\"550\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-37.png\" alt=\"\u76f4\u65b9\u56fe\" class=\"wp-image-164\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-37.png 726w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-37-300x227.png 300w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-37-100x75.png 100w\" sizes=\"auto, (max-width: 726px) 100vw, 726px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">11\u3001\u9762\u79ef\u4e0e\u603b\u4ef7\u7684\u5bc6\u5ea6\u56fe<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>df&#91;'\u9762\u79ef\uff08\u5343\u7c73\uff09'].plot.density()\r\ndf&#91;'\u603b\u4ef7\uff08\u4e07\uff09'].plot.density(secondary_y = True)<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"827\" height=\"543\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-38.png\" alt=\"\u5bc6\u5ea6\u56fe\" class=\"wp-image-165\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-38.png 827w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-38-300x197.png 300w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-38-768x504.png 768w\" sizes=\"auto, (max-width: 827px) 100vw, 827px\" \/><figcaption class=\"wp-element-caption\">\u6a59\u8272\u7684\u662f\u603b\u4ef7\u5bc6\u5ea6\u56fe\uff0c\u84dd\u8272\u7684\u662f\u9762\u79ef\uff0c\u53ef\u89c1\uff0c\u8fd9\u4fe9\u6210\u6b63\u6bd4\uff0c\u4ef7\u683c\u4e0e\u9762\u79ef\u5bc6\u5ea6\u5173\u7cfb\u5f88\u5927\uff0c\u5347\u964d\u8d8b\u52bf\u4e00\u6837<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">12\u3001\u5220\u9664\u5730\u533a\u8fd9\u4e00\u5217<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>del df&#91;'\u5730\u533a']\r\nprint(df)<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"569\" height=\"451\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-39.png\" alt=\"\" class=\"wp-image-166\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-39.png 569w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-39-300x238.png 300w\" sizes=\"auto, (max-width: 569px) 100vw, 569px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">13\u3001\u586b\u5145\u7f3a\u7701\u503c<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>df&#91;'\u5ba4'] = df&#91;'\u5ba4'].fillna(df&#91;'\u5ba4'].mode()&#91;0])   #\u4f17\u6570\u586b\u5145\r\ndf&#91;'\u5385'] = df&#91;'\u5385'].fillna(df&#91;'\u5385'].median())  #\u7f3a\u5931\u503c\u7528\u8be5\u5217\u7684\u4e2d\u4f4d\u6570\u586b\u5145\r\ndf.info()<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"405\" height=\"301\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-40.png\" alt=\"\" class=\"wp-image-167\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-40.png 405w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-40-300x223.png 300w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-40-100x75.png 100w\" sizes=\"auto, (max-width: 405px) 100vw, 405px\" \/><figcaption class=\"wp-element-caption\">\u90fd\u586b\u5145\u5b8c\u6210\uff0c\u586b\u6ee1\u4e8620\u4e2a<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">14\u3001\u628a\u603b\u4ef7\u6309\u533a\u95f4\u5212\u5206\uff0c\u7edf\u8ba1\u533a\u95f4\u6570\u91cf<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>bins = &#91;0,100,200,300,400]\r\nbinresult = pd.cut(df&#91;'\u603b\u4ef7\uff08\u4e07\uff09'],bins)\r\nprint(binresult.value_counts().sort_index(axis = 0)) <\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"274\" height=\"142\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-41.png\" alt=\"\" class=\"wp-image-168\"\/><figcaption class=\"wp-element-caption\">0\u5230100\u4e07\u7684\u67094\u4e2a\uff0c100\u5230\u4e24\u767e\u7684\u670914\u4e2a\uff0c\u4ee5\u6b64\u5185\u63a8<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">15\u3001\u52a0\u4e00\u5217\u2018\u7c7b\u578b\u2019\uff0c\u628a\u603b\u4ef7\u518d\u6309\u533a\u95f4\u5206\u4e3a\u591a\u79cd\u7c7b\u578b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>df&#91;'\u7c7b\u578b'] = pd.cut(df&#91;'\u603b\u4ef7\uff08\u4e07\uff09'],bins,labels = &#91;'\u4fbf\u5b9c', '\u6b63\u5e38', '\u6602\u8d35', '\u975e\u5e38\u8d35'])\r\ndf.head(20)<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"618\" height=\"773\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-42.png\" alt=\"\" class=\"wp-image-169\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-42.png 618w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-42-240x300.png 240w\" sizes=\"auto, (max-width: 618px) 100vw, 618px\" \/><figcaption class=\"wp-element-caption\">\u56e0\u4e3a\u4e0a\u9762\u8fdb\u884c\u4e86\u7f3a\u7701\u503c\u586b\u5145\uff0c\u6240\u4ee5\u6570\u636e\u5168\u4e3a\u975e\u7a7a\u4e86<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">16\u3001\u4f7f\u7528\u997c\u56fe\u5c55\u793a\u4ef7\u683c\u6bb5\u5206\u6bb5\u8ba1\u6570<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>df&#91;'\u7c7b\u578b'].value_counts().plot.pie() <\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"572\" height=\"488\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-43.png\" alt=\"\u997c\u56fe\" class=\"wp-image-170\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-43.png 572w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-43-300x256.png 300w\" sizes=\"auto, (max-width: 572px) 100vw, 572px\" \/><figcaption class=\"wp-element-caption\">\u53ef\u89c1\uff0c\u4ef7\u683c\u5c5e\u4e8e\u6b63\u5e38\u8303\u56f4\u7684\u504f\u591a\u6570<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">17\u3001\u7528\u6620\u5c04\u628a\u671d\u5411\u4e00\u5217\u7684\u6c49\u5b57\u53d8\u4e3a\u6570\u5b57\u6765\u53ef\u4ee5\u5c06\u8fd9\u4e9b\u6570\u636e\u7528\u4e8e\u7b97\u6cd5\u6a21\u578b\u8bad\u7ec3\u548c\u5206\u6790\uff08\u673a\u5668\u53ea\u80fd\u8bc6\u522b\u6570\u5b57\uff09\uff0c\u540c\u65f6\u7edf\u8ba1\u4e00\u4e0b\u6bcf\u4e2a\u6570\u5b57\uff08\u671d\u5411\uff09\u591a\u5c11\u4e2a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>direct_mapping={\r\n    '\u5357':'1',\r\n    '\u4e1c\u897f':'2',\r\n    '\u5357\u5317':'3',\r\n}\r\ndf&#91;'\u671d\u5411'] = df&#91;'\u671d\u5411'].str.strip().map(direct_mapping)\r\ndf&#91;'\u671d\u5411'].value_counts()<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"297\" height=\"126\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-44.png\" alt=\"\" class=\"wp-image-171\"\/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">18\u3001\u628a\u9700\u8981\u7684\u6709\u7528\u7684\u5217\u518d\u5408\u5e76\u4e3a\u4e00\u4e2a\u65b0\u7684\u5217<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>df&#91;'\u623f\u95f4\uff08\u603b\u6570\uff09'] = df&#91;'\u5ba4'] + df&#91;'\u5385'] + df&#91;'\u536b']\r\npd.set_option('display.max_columns',None)  #display.max_columns\u663e\u793a\u6240\u6709\u7684\u5217\u3002\u56e0\u4e3a\u5b58\u5728\u8868\u683c\u8fc7\u957f\u5217\u663e\u793a\u4e0d\u5168\u7684\u60c5\u51b5\uff0c\u7528\u6b64\u53ef\u4ee5\u663e\u793a\u6240\u6709\r\ndf.head(20)<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"719\" height=\"762\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-45.png\" alt=\"\" class=\"wp-image-172\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-45.png 719w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-45-283x300.png 283w\" sizes=\"auto, (max-width: 719px) 100vw, 719px\" \/><figcaption class=\"wp-element-caption\">\u53ef\u4ee5\u770b\u5230\u65b0\u52a0\u4e86\u4e00\u4e2a\u5217\u623f\u95f4\uff08\u603b\u6570\uff09\uff0c\u4e3a\u5ba4\u5385\u536b\u7684\u548c\uff0c\u518d\u56e0\u4e3a\u521a\u521a\u5728\u4e0a\u9762\u628a\u671d\u5411\u5df2\u7ecf\u8f6c\u4e3a\u4e86\u6570\u5b57\uff0c\u6240\u4ee5\u663e\u793a\u7684\u662f\u7528\u6570\u5b57\u8868\u793a\u7684\u671d\u5411<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">19\u3001\u5408\u5e76\u5fc5\u8981\u7684\u5217\u91cd\u65b0\u6574\u5408\u6210\u4e00\u4e2aDataFrame<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>reserve = &#91;'\u603b\u4ef7\uff08\u4e07\uff09', '\u9762\u79ef\uff08\u5343\u7c73\uff09', '\u5747\u4ef7', '\u671d\u5411',  '\u623f\u95f4\uff08\u603b\u6570\uff09']\r\ndata = df&#91;reserve]\r\ndata.head(20)<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"558\" height=\"777\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-46.png\" alt=\"\" class=\"wp-image-173\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-46.png 558w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-46-215x300.png 215w\" sizes=\"auto, (max-width: 558px) 100vw, 558px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">20\u3001\u751f\u6210\u6570\u636e\u96c6\u57fa\u672c\u7edf\u8ba1\u4fe1\u606f\uff08\u8ba1\u6570\uff08count\uff09\u3001\u5747\u503c\uff08mean\uff09\u3001\u6807\u51c6\u5dee\uff08std\uff09\u3001\u6700\u5c0f\u503c\uff08min\uff09\u3001\u56db\u5206\u4f4d\u6570\uff0825th\u767e\u5206\u4f4d\u6570\u3001\u4e2d\u4f4d\u6570\u300175th\u767e\u5206\u4f4d\u6570\uff09\u3001\u6700\u5927\u503c\uff08max\uff09\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>data.describe()<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"457\" height=\"335\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-47.png\" alt=\"\" class=\"wp-image-175\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-47.png 457w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-47-300x220.png 300w\" sizes=\"auto, (max-width: 457px) 100vw, 457px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">21\u3001\u5728\u4e0a\u8ff0csv\u6587\u4ef6\u4e2d\uff0c\u56e0\u4e3a\u5747\u4ef7\u662f\u5e26\u4e86\u5355\u4f4d\u7684\uff0c\u56e0\u6b64\u6b64\u65f6\u9700\u8981\u8f6c\u6362\u4e3a\u6570\u5b57\u4e0d\u5e26\u5355\u4f4d\u4ee5\u8ba9\u673a\u5668\u8bc6\u522b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>data&#91;'\u5747\u4ef7'] = data&#91;'\u5747\u4ef7'].str.split('.',expand=True)&#91;0] #\u4ee5'.'\u5206\u5f00\u53d6\u7b2c\u4e00\u4f4d\r\ndata.head(20)<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"540\" height=\"775\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-48.png\" alt=\"\" class=\"wp-image-176\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-48.png 540w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-48-209x300.png 209w\" sizes=\"auto, (max-width: 540px) 100vw, 540px\" \/><figcaption class=\"wp-element-caption\">\u5747\u4ef7\u5df2\u4e0d\u5e26\u5355\u4f4d\u4e14\u7c7b\u578b\u4e3aint<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">22\u3001\u6570\u636e\u7f29\u653e\uff08\u6d88\u9664\u7279\u5f81\u95f4\u7684\u91cf\u7eb2\u5dee\u5f02\uff0c\u52a0\u901f\u6a21\u578b\u6536\u655b\uff0c\u63d0\u9ad8\u6a21\u578b\u6027\u80fd\u548c\u9c81\u68d2\u6027\uff09\uff0c\u533a\u95f4\u901a\u5e38[0,1]<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uff081\uff09\u5c06\u6570\u636e\u8f6c\u6362\u4e3aNumPy\u7c7b\u578b\u6570\u7ec4<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from sklearn.preprocessing import MinMaxScaler\r\n\r\ntmp = MinMaxScaler().fit_transform(data)\r\ntype(tmp)<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"172\" height=\"57\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-49.png\" alt=\"\" class=\"wp-image-177\"\/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">\uff082\uff09\u5c06\u7ecf\u8fc7\u7f29\u653e\u5904\u7406\u540e\u7684\u6570\u636e tmp\u8f6c\u6362\u4e3a Pandas DataFrame\u5e76\u83b7\u53d6\u6570\u636e\u6982\u8981<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>data1 = pd.DataFrame(tmp, columns = reserve)\r\ndata1.describe()<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"616\" height=\"346\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-50.png\" alt=\"\" class=\"wp-image-178\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-50.png 616w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-50-300x169.png 300w\" sizes=\"auto, (max-width: 616px) 100vw, 616px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">23\u3001\u5c06\u6570\u636e\u8fdb\u884c\u6807\u51c6\u5316\u5904\u7406\uff0c\u5373\u4f7f\u5f97\u6570\u636e\u7684\u6bcf\u4e2a\u7279\u5f81\u90fd\u6ee1\u8db3\u5747\u503c\u4e3a0\uff0c\u6807\u51c6\u5dee\u4e3a1\u7684\u6b63\u6001\u5206\u5e03\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from sklearn.preprocessing import StandardScaler   \r\ntmp2 = StandardScaler().fit_transform(data)\r\ndata2 = pd.DataFrame(tmp2,columns = reserve)\r\ndata2.describe()<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"727\" height=\"338\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-51.png\" alt=\"\" class=\"wp-image-179\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-51.png 727w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-51-300x139.png 300w\" sizes=\"auto, (max-width: 727px) 100vw, 727px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">24\u3001\u5bf9\u6570\u636e\u8fdb\u884c\u5f52\u4e00\u5316\u5904\u7406\uff08\u901a\u8fc7\u5c06\u7279\u5f81\u503c\u7f29\u653e\u5230\u7edf\u4e00\u7684\u8303\u56f4\u5185\uff0c\u6d88\u9664\u7279\u5f81\u95f4\u7684\u91cf\u7eb2\u5dee\u5f02\uff0c\u63d0\u9ad8\u6a21\u578b\u7684\u6027\u80fd\u3001\u52a0\u901f\u6536\u655b\u901f\u5ea6\uff0c\u5e76\u589e\u5f3a\u6a21\u578b\u5bf9\u5f02\u5e38\u503c\u7684\u9c81\u68d2\u6027\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from sklearn.preprocessing import Normalizer  \r\ntmp3 = Normalizer().fit_transform(data)\r\ndata3 = pd.DataFrame(tmp3,columns = reserve)\r\ndata3.describe()<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"615\" height=\"354\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-52.png\" alt=\"\" class=\"wp-image-181\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-52.png 615w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-52-300x173.png 300w\" sizes=\"auto, (max-width: 615px) 100vw, 615px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">25\u3001\u6570\u636e\u5173\u7cfb<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>covf = data3&#91;'\u603b\u4ef7\uff08\u4e07\uff09'].cov(data3&#91;'\u5747\u4ef7'])   \r\nprint(\"\u603b\u4ef7\u4e0e\u5747\u4ef7\u7684\u534f\u65b9\u5dee\uff1a\",covf)\r\ncorf = data3&#91;'\u603b\u4ef7\uff08\u4e07\uff09'].corr(data3&#91;'\u5747\u4ef7'])\r\nprint(\"\u603b\u4ef7\u4e0e\u5747\u4ef7\u7684\u76f8\u5173\u7cfb\u6570\uff1a\",corf)<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"410\" height=\"74\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-53.png\" alt=\"\" class=\"wp-image-182\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-53.png 410w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-53-300x54.png 300w\" sizes=\"auto, (max-width: 410px) 100vw, 410px\" \/><figcaption class=\"wp-element-caption\">\u53ef\u77e5\u9053\u5728\u4e0a\u8ff0\u8fd920\u6761\u6570\u636e\u91cc\u603b\u4ef7\u4e0e\u5747\u4ef7\u6574\u4f53\u6210\u8d1f\u76f8\u5173<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">26\u3001\u6570\u636e\u964d\u7ef4\uff08\u51cf\u5c11\u6570\u636e\u7ef4\u5ea6\u3001\u53bb\u9664\u5197\u4f59\u4fe1\u606f\u3001\u63a2\u7d22\u6570\u636e\u7ed3\u6784\uff0c\u52a0\u5feb\u6a21\u578b\u8bad\u7ec3\u901f\u5ea6\uff0c\u5e76\u7b80\u5316\u6570\u636e\u4ee5\u4fbf\u66f4\u6613\u7406\u89e3\u548c\u53ef\u89c6\u5316\uff0c\u4ece\u800c\u4f18\u5316\u6570\u636e\u5206\u6790\u548c\u5efa\u6a21\u7684\u6548\u7387\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uff081\uff09\u5c06\u6570\u636e\u8f6c\u5316\u4e3aNumPy\u7c7b\u578b\u6570\u7ec4<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from sklearn.decomposition import PCA\n\npca = PCA(n_components=3) #n_components=3\u4fdd\u75593\u4e2a\u4e3b\u8981\u7279\u5f81\u7ef4\u5ea6\nx = data3.drop('\u671d\u5411',axis = 1)\nnewX = pca.fit_transform(x)\ntype(newX)<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"224\" height=\"59\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-54.png\" alt=\"\" class=\"wp-image-183\"\/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">\uff082\uff09\u8f93\u51fa\u964d\u7ef4\u540e\u7684\u65b0\u7684DataFrame<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>data4 = pd.DataFrame(newX)\r\ndata4.head(20)<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"460\" height=\"785\" src=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-55.png\" alt=\"\" class=\"wp-image-184\" srcset=\"https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-55.png 460w, https:\/\/blog.zwdblog.online\/wp-content\/uploads\/2023\/12\/image-55-176x300.png 176w\" sizes=\"auto, (max-width: 460px) 100vw, 460px\" \/><\/figure>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>\u4ee5\u4e0b\u5bf9\u6570\u636e\u7684\u9884\u5904\u7406\u662f\u57fa\u4e8ejupyter notebook 1 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":208,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-151","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-6"],"_links":{"self":[{"href":"https:\/\/blog.zwdblog.online\/index.php\/wp-json\/wp\/v2\/posts\/151","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.zwdblog.online\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.zwdblog.online\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.zwdblog.online\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.zwdblog.online\/index.php\/wp-json\/wp\/v2\/comments?post=151"}],"version-history":[{"count":0,"href":"https:\/\/blog.zwdblog.online\/index.php\/wp-json\/wp\/v2\/posts\/151\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.zwdblog.online\/index.php\/wp-json\/wp\/v2\/media\/208"}],"wp:attachment":[{"href":"https:\/\/blog.zwdblog.online\/index.php\/wp-json\/wp\/v2\/media?parent=151"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.zwdblog.online\/index.php\/wp-json\/wp\/v2\/categories?post=151"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.zwdblog.online\/index.php\/wp-json\/wp\/v2\/tags?post=151"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}