{"id":155419,"date":"2020-08-31T04:24:06","date_gmt":"2020-08-30T20:24:06","guid":{"rendered":"http:\/\/4563.org\/?p=155419"},"modified":"2020-08-31T04:24:06","modified_gmt":"2020-08-30T20:24:06","slug":"pandas-%e5%88%86%e7%bb%84%e5%90%8e%e5%a6%82%e4%bd%95%e5%8e%bb%e5%90%8e%e7%99%be%e5%88%86%e4%b9%8b-80-%e7%9a%84%e5%80%bc","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=155419","title":{"rendered":"pandas \u5206\u7ec4\u540e\u5982\u4f55\u53bb\u540e\u767e\u5206\u4e4b 80 \u7684\u503c"},"content":{"rendered":"<div>\n<div>\n<div>\n<h1>                  pandas \u5206\u7ec4\u540e\u5982\u4f55\u53bb\u540e\u767e\u5206\u4e4b 80 \u7684\u503c               <\/h1>\n<p> <\/p>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : sznewbee096 <\/span>  <span><i><\/i> 7<\/span> <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div isfirst=\"1\"> <\/p>\n<p>\u5728\u7ec3\u4e60\u7684\u65f6\u5019\uff0cpython \u6570\u636e\u5904\u7406\u7528 pandas.groupby \u5206\u7ec4\u540e\u53d6\u540e\u767e\u5206\u4e4b 80 \u7684\u503c\uff0ctail \u53ea\u80fd\u53d6\u5177\u4f53\u7684\u540e\u51e0\u884c\u3002<\/p>\n<\/p><\/div>\n<div> <b>\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (<span>7<\/span>)        <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<ul>\n<li data-pid=\"3289852\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : xzpjerry731 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u7528\u7c7b\u4f3c\u8fd9\u79cd\uff1f df.groupby(&#8216;xx&#8217;).apply(lambda x: x.nsmallest(int(len(x) * 80), &#8216;xxx&#8217;)                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"3289853\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : kangsheng9527 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             shell \u4e2d tail \u5bf9\u5e94\u53e6\u5916\u76f8\u53cd\u4e00\u4e2a\u547d\u4ee4\u662f head \u3002<br \/>\u7528\u5230 python \u4e86\u5c31\u76f4\u63a5 python \u4ee3\u7801\u4e0a\u5904\u7406\u4e86\u3002\u3002\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"3289854\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : sznewbee096 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @xzpjerry731 \u8bd5\u4e86\u4e00\u4e0b\uff0c\u601d\u8def\u662f\u6ca1\u6709\u95ee\u9898\uff0c\u5c31\u662f\u7ed3\u679c\u884c\u6570\u5e76\u672a\u51cf\u5c11\u3002\u4e0d\u8fc7\u8c22\u8c22\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"3289855\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : sznewbee096 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @kangsheng9527 \u55ef\u55ef\uff0ctail \u662f\u53d6\u540e\u51e0\u884c\uff0chead \u662f\u53bb\u524d\u51e0\u884c\uff0c\u4e0d\u8fc7\u8fd9\u4e2a\u95ee\u9898\u4e0d\u77e5\u5230\u6709\u591a\u5c11\u884c\uff0c\u53ea\u53d6\u540e\u767e\u5206\u4e4b 80 \u3002\u524d\u63d0\u662f\u5206\u7ec4\u540e\u5b58\u5728\u591a\u5217\uff0c\u6bd4\u8f83\u9ebb\u70e6\u3002\u4e0d\u5206\u7ec4\u7684\u8bdd\uff0c\u6211\u8fd8\u80fd\u5904\u7406                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"3289856\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : xzpjerry731 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @sznewbee096 #3 \u53d1\u73b0 1 \u6253\u9519\u4e86\uff0c80 \u5e94\u8be5\u662f 0.8 \u624d\u5bf9\uff1b df.groupby(&#8216;xx&#8217;).apply(lambda x: x.nsmallest(int(len(x) * 0.8), &#8216;xxx&#8217;)                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"3289857\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : sznewbee096 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @xzpjerry731 \u55ef\u55ef\uff0c\u521a\u521a\u6211\u5df2\u7ecf\u6539\u6210 0.8\uff0c\u4f46\u662f\u53d6\u51fa\u7684\u884c\u6570\u5e76\u4e0d\u662f\u6700\u540e\u7684 80%                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"3289858\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : sznewbee096 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @sznewbee096 \u4e0d\u597d\u610f\u601d\u6211\u8fd0\u884c\u51fa\u4e86\u95ee\u9898\uff0c\u7ed3\u679c\u662f\u5bf9\u7684\u3002\u611f\u8c22\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li>\n","protected":false},"excerpt":{"rendered":"<p>pandas \u5206\u7ec4\u540e\u5982\u4f55\u53bb\u540e\u767e\u5206\u4e4b&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/155419"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=155419"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/155419\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=155419"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=155419"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=155419"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}