{"id":19,"date":"2022-03-22T14:39:31","date_gmt":"2022-03-22T06:39:31","guid":{"rendered":"http:\/\/dachengge.com\/?p=19"},"modified":"2022-03-22T14:39:31","modified_gmt":"2022-03-22T06:39:31","slug":"%e4%bd%bf%e7%94%a8python%e7%9a%84pandas%e5%a4%84%e7%90%86%e7%99%be%e4%b8%87%e6%95%b0%e6%8d%ae%e7%9a%84%e5%b0%9d%e8%af%95","status":"publish","type":"post","link":"http:\/\/dachengge.com\/?p=19","title":{"rendered":"\u4e00\u6b21\u8f83\u5927\u89c4\u6a21\u6570\u636e\u5904\u7406\u7684\u7ecf\u5386 PYTHON\u7248"},"content":{"rendered":"

\u524d\u4e00\u6bb5\u65f6\u95f4\u9047\u5230\u4e86\u4e00\u6b21\u6570\u636e\u5904\u7406\u7684\u95ee\u9898\uff0c\u539f\u59cb\u6570\u636e\u662fCSV\u6570\u636e\uff08\u9017\u53f7\u5206\u9694\uff09\uff0c\u8fd1\u767e\u4e07\u6761\uff0c\u8981\u6839\u636e\u4e0d\u540c\u7684\u516c\u5f0f\u5bf9\u6bcf\u4e00\u6761\u8fdb\u884c\u8ba1\u7b97\u3002\u5728\u4f7f\u7528EXCEL\u8fdb\u884c\u8ba1\u7b97\u65f6\uff0c\u53ea\u8981\u4e00\u52a8\u5c31\u4f1a\u91cd\u65b0\u8ba1\u7b97\uff0c\u800c\u4e14\u65f6\u5e38\u51fa\u73b0\u65e0\u54cd\u5e94\u7684\u72b6\u6001\uff0c\u6709\u597d\u51e0\u6b21\u5f3a\u884c\u5173\u95ed\u5bfc\u81f4\u91cd\u5934\u518d\u6765\u3002<\/p>\n

\u8003\u8651\u5230\u6570\u636e\u91cf\u5927\uff0c\u4f7f\u7528EXCEL\u8ba1\u7b97\u53ef\u80fd\u4e0d\u9002\u5408\uff0c\u624d\u5bfc\u81f4\u4e0d\u505c\u5730\u6b7b\u673a\u3002\u6700\u521d\u6253\u7b97\u4f7f\u7528\u6570\u636e\u5e93\u6765\u8ba1\u7b97\uff0c\u6ca1\u6709\u6570\u636e\u91cf\u7684\u9650\u5236\uff0c\u5728\u67e5\u8be2\u548c\u66f4\u65b0\u7684\u65f6\u5019\u901f\u5ea6\u5f88\u5feb\u3002\u4f46\u662f\u6bcf\u4e00\u884c\u8ba1\u7b97\u7684\u65f6\u5019\uff0c\u5bf9\u4e8e\u7ed3\u679c\u4e0d\u662f\u7b80\u5355\u5730\u8d4b\u503c\uff0c\u800c\u662f\u5206\u6bb5\u4e58\u4ee5\u6bd4\u4f8b\u518d\u7d2f\u52a0\u8ba1\u7b97\uff08\u7c7b\u4f3c\u4e8e\u7535\u8d39\u9636\u68af\u8ba1\u7b97\uff09\uff0c\u601d\u6765\u60f3\u53bb\uff0c\u4e0d\u77e5\u9053\u5982\u4f55\u4f7f\u7528SQL\u8bed\u53e5\u5b9e\u73b0\uff0c\u6709\u53ef\u80fd\u9700\u8981\u5f88\u591a\u4e2a\u4e0d\u540c\u7684\u8bed\u53e5\u3002\u4e0e\u5176\u8fd9\u4e48\u9ebb\u70e6\uff0c\u4e0d\u5982\u5199\u7a0b\u5e8f\u6765\u5b9e\u73b0\uff0c\u4e8e\u662f\u6253\u7b97\u4f7f\u7528\u73b0\u5728\u5f88\u6d41\u884c\u7684PYTHON\u8bed\u8a00\u6765\u5904\u7406\uff0c\u4e00\u662f\u7b80\u5355\u6613\u5b66\uff0c\u4e8c\u662f\u6709\u4e30\u5bcc\u7684\u6a21\u5757\uff0c\u8bf4\u4e0d\u5b9a\u5c31\u6709\u89e3\u51b3\u8be5\u95ee\u9898\u7684\u65b9\u6cd5\u3002<\/p>\n

\u7ecf\u8fc7\u4e86\u89e3\uff0c\u6709\u4e00\u4e2a\u6a21\u5757PANDAS\u80fd\u591f\u65b9\u4fbf\u7684\u5904\u7406CSV\u6570\u636e\uff0c\u800c\u4e14\u975e\u5e38\u7075\u6d3b\uff0c\u6253\u7b97\u8bd5\u4e00\u8bd5\uff0c\u6700\u7ec8\u6210\u529f\u89e3\u51b3\u4e86\u95ee\u9898\uff0c\u73b0\u5c06\u8fc7\u7a0b\u8bb0\u5f55\u4ee5\u4fbf\u4ee5\u540e\u518d\u4f7f\u7528\u3002<\/span><\/p>\n

##\u5bfc\u5165numpy\u548cpandas\u6a21\u5757\nimport numpy as np\nimport pandas as pd<\/pre>\n
##\u8bbe\u7f6e\u663e\u793a\u7684\u5217\u6570\uff0c\u5168\u90e8\u663e\u793a\uff0c\u65b9\u4fbf\u67e5\u770b\u5185\u5bb9\npd.set_option('display.max_columns',None)<\/pre>\n
##\u6bcf\u4e00\u5217\u7684\u6807\u9898\ntitle=('\u52171','\u52172','\u52173','\u52174')<\/pre>\n
##\u8bbe\u7f6e\u6bcf\u4e00\u5217\u7684\u6570\u636e\u7c7b\u578b\n##\u4e0d\u8bbe\u7f6e\u4f1a\u81ea\u52a8\u8bc6\u522b\uff0c\u4f46\u662f\u6709\u53ef\u80fd\u51fa\u9519\ndataType={'\u52171':str,'\u52172':str,\n          '\u52173':str,'\u52174':float}<\/pre>\n
##\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\n##names\u6307\u5b9a\u6bcf\u4e00\u5217\u7684\u6807\u9898\n##encoding\u8bbe\u7f6e\u6587\u4ef6\u7f16\u7801\n##index_col=False\uff0c\u4e0d\u4f7f\u7528\u7b2c\u4e00\u5217\u6570\u636e\u5f53\u7d22\u5f15\uff0c\u8fd9\u65f6\u7cfb\u7edf\u4f1a\u5bf9\u6bcf\u4e00\u884c\u6570\u636e\u751f\u6210\u7d22\u5f15\uff0c\u7f16\u53f7\u4ece\u96f6\u5f00\u59cb\uff0c\u800c\u4e14\u7d22\u5f15\u53f7\u4e0d\u662f\u884c\u53f7\uff0c\u5373\u4f7f\u6392\u5e8f\u540e\u4e5f\u4e0d\u53d1\u751f\u53d8\u5316\n##dtype\u8bbe\u7f6e\u6bcf\u4e00\u5217\u6570\u636e\u7c7b\u578b\ndata=pd.read_csv('data.csv',names=title,encoding='GBK',index_col=False,dtype=dataType)<\/pre>\n
##\u6dfb\u52a0\u7ed3\u679c\u5217\uff0c\u5168\u90e8\u8d4b\u503c\u4e3a0\ndata['\u7ed3\u679c']=0<\/pre>\n
##\u7f16\u5199\u5bf9\u6bcf\u4e00\u884c\u8ba1\u7b97\u51fd\u6570\uff0c\u540e\u9762\u8c03\u7528\ndef calc(row):\n    result=0\n    value=row['value']\n    ##\u6839\u636e\u52171\u548c\u52172\u7684\u5177\u4f53\u60c5\u51b5\uff0c\u5206\u522b\u8bbe\u7f6e\u9636\u68af\u5206\u6bb5\u8ba1\u7b97\u8bed\u53e5\n    ##\u4ee5\u4e0b\u4e3a\u5176\u4e2d\u4e00\u79cd\u60c5\u51b5\n    if value<200:result=0\n    elif value<1000:result=(value-200)*0.6\n    elif value<10000:result=(1000-200)*0.6\\\n                        +(value-1000)*0.7\n    ........\n    return result<\/pre>\n
##\u4f7f\u7528calc\u51fd\u6570\u5bf9\u8868\u7684\u6bcf\u4e00\u884c\u8ba1\u7b97\uff0c\u5e76\u5c06\u7ed3\u679c\u8d4b\u503c\u7ed9\u7ed3\u679c\u5217\n##calc\u4e3a\u4e0a\u9762\u5b9a\u4e49\u7684\u56de\u8c03\u51fd\u6570\n##axis\uff0c1\u662f\u5bf9\u6bcf\u4e00\u884c\u8ba1\u7b97\uff1b0\u662f\u6bcf\u4e00\u5217\ndata['\u7ed3\u679c']=data.apply(calc,axis=1)<\/pre>\n
##\u5bf9\u4e8e\u8ba1\u7b97\u7684\u7ed3\u679c\uff0c\u6309\u7167\u52173\u805a\u5408\u8ba1\u7b97\uff0c\u65b9\u5f0f\u4e3a\u6c42\u548c\uff0c\u5f53\u7136\u9664\u4e86\u6c42\u548c\uff0c\u8fd8\u6709\u5176\u4ed6\u5f88\u591a\u79cd\u7c7b\uff0c\u6bd4\u5982\u6b21\u6570\u3001\u5e73\u5747\u503c\u7b49\uff0c\u4e0b\u9762\u5bf9\u8ba1\u7b97\u7ed3\u679c\u6309\u7167\u52173\u8fdb\u884c\u6c47\u603b\n##\u7c7b\u4f3c\u4e8eSQL\u53e5\u7684select \u52173,sum(\u7ed3\u679c\uff09\n##           from data\n##           groupby \u52173\nresult=data.groupby('\u52173').agg({'\u7ed3\u679c':np.sum})<\/pre>\n
\u4ee5\u4e0a\u8fc7\u7a0b\u5df2\u7ecf\u57fa\u672c\u89e3\u51b3\u4e86\u95ee\u9898\uff0c\u5bf9\u6bcf\u4e00\u884c\u8ba1\u7b97\u7ed3\u679c\u540e\u6c47\u603b\uff0c\u6216\u8005\u53c8\u8fdb\u884c\u7b80\u5355\u5730\u8ba1\u7b97\u518d\u6c47\u603b\u3002\u968f\u540e\u53c8\u8fdb\u884c\u4e86\u65b0\u7684\u5c1d\u8bd5\uff0c\u4e0a\u9762\u6bcf\u4e00\u6761\u6570\u636e\u6839\u636e\u52171\u548c\u52172\u7684\u4e0d\u540c\uff0c\u5206\u522b\u8ba1\u7b97\u7ed3\u679c\uff0c\u5047\u8bbe\u5bf9\u4e8e\u6bcf\u4e00\u4e2a\u52173\u7684\u6570\u636e\uff0c\u7b2c\u4e00\u6b21\u3001\u7b2c\u4e8c\u6b21\u3001\u7b2c\u4e09\u6b21\u7684\u8ba1\u7b97\u65b9\u5f0f\u53c8\u4e0d\u4e00\u6837\uff0c\u56e0\u6b64\u53c8\u589e\u52a0\u4e86\u4e00\u5217\u2019\u6b21\u6570\u2019\uff0c\u5e76\u9488\u5bf9\u6b64\u5904\u53c8\u7f16\u5199\u4e86\u516c\u5f0f\uff08\u5728calc\u51fd\u6570\u91cc\u9762\u589e\u52a0\u5224\u65ad\u6761\u4ef6\uff09\u3002\u8fd9\u91cc\u8bb0\u5f55\u4e00\u4e0b\u5982\u4f55\u8ba1\u7b97\u6bcf\u4e00\u4e2a\u52173\u4fe1\u606f\u7684\u6b21\u6570\u3002<\/p>\n
##\u9996\u5148\u8c03\u53d6\u6240\u6709\u52173\u7684\u6570\u636e\uff0c\u4e5f\u5c31\u662f\u53d6\u552f\u4e00\u503c\n##\u7c7b\u4f3c\u4e8eSQL\u53e5\u7684select distinct \u52173\n##           from data\nids=data['\u52173'].unique()<\/pre>\n
##\u589e\u52a0\u8bb0\u5f55\u6b21\u6570\u7684\u5217\uff0c\u5168\u90e8\u8d4b\u503c\u4e3a0\ndata['\u6b21\u6570']=0<\/pre>\n
##\u9488\u5bf9\u6bcf\u4e00\u4e2a\u52173\u7684\u6570\u636e\uff0c\u5217\u51fa\u76f8\u5173\u6240\u6709\u7684\u8bb0\u5f55\uff0c\u6309\u7167\u65f6\u95f4\u6392\u5e8f\uff0c\u6839\u636e\u6bcf\u4e00\u6761\u8bb0\u5f55\u7684\u7d22\u5f15\u53f7\uff08\u6392\u5e8f\u4e4b\u540e\u4e0d\u4f1a\u53d1\u751f\u53d8\u5316\uff09\uff0c\u6765\u66f4\u65b0\u6b21\u6570\u4fe1\u606f\uff0c\u8fd9\u91cc\u4ee5\u4e00\u4e2a\u52173\u7684\u6570\u636e\u4e3e\u4f8b\uff1a\n\n##\u53d6\u51fa\u52173\u4fe1\u606f\u4e3aids[0]\u7684\u6240\u6709\u8bb0\u5f55\uff0c\u5e76\u6309\u7167\u65f6\u95f4\u6392\u5e8f\uff0c\u5047\u8bbe\u6570\u636e\u4e2d\u6709'\u65f6\u95f4'\u5217\n##\u6392\u5e8f\u6709\u5347\u5e8f\u964d\u5e8f\u4e4b\u5206\uff0c\u901a\u8fc7ascending\u533a\u5206\uff0c\u6b64\u5904\u6309\u9ed8\u8ba4\u6392\u5e8f\nids0=data[data['\u52173']==ids[0]].sort_value('\u65f6\u95f4')\n\n##\u6b64\u65f6\u5df2\u6392\u5e8f\uff0c\u53d6\u51fa\u6240\u6709ids[0]\u8bb0\u5f55\u7684\u7d22\u5f15\uff0c\u5e76\u6309\u71671,2,3,4\u7684\u987a\u5e8f\u8d4b\u503c\u7ed9\u6b21\u6570\u5217\ni=1\nfor iIndex in ids0.index:\n      data.loc[iIndex,'\u6b21\u6570']=i\n      i=i+1\n\n##\u5c06\u7ed3\u7b97\u7ed3\u679c\u4fdd\u5b58\u6210EXCEL\n##\u53c2\u6570\u4e3a\u6587\u4ef6\u540d\uff0c\u7f16\u7801\u683c\u5f0f\ndata.to_excel(\"result.xlsx\",encoding=\"GBK\")<\/pre>\n
EXCEL\u867d\u7136\u6162\uff0c\u4f46\u662f\u5e76\u975e\u6ca1\u6709\u89e3\u51b3\u7684\u529e\u6cd5\uff0c\u56e0\u6b64\u91cd\u65b0\u7528EXCEL\u89e3\u51b3\u4e86\u4e00\u904d\uff0c\u8be6\u89c1\u300a\u4e00\u6b21\u8f83\u5927\u89c4\u6a21\u6570\u636e\u5904\u7406\u7684\u7ecf\u5386 EXCEL\u7248<\/a>\u300b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u524d\u4e00\u6bb5\u65f6\u95f4\u9047\u5230\u4e86\u4e00\u6b21\u6570\u636e\u5904\u7406\u7684\u95ee\u9898\uff0c\u539f\u59cb\u6570\u636e\u662fCSV\u6570\u636e\uff08\u9017\u53f7\u5206\u9694\uff09\uff0c\u8fd1\u767e\u4e07\u6761\uff0c\u8981\u6839\u636e\u4e0d\u540c\u7684\u516c\u5f0f\u5bf9\u6bcf\u4e00\u6761\u8fdb\u884c\u8ba1 … \u7ee7\u7eed\u9605\u8bfb\u4e00\u6b21\u8f83\u5927\u89c4\u6a21\u6570\u636e\u5904\u7406\u7684\u7ecf\u5386 PYTHON\u7248<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"views":5765,"_links":{"self":[{"href":"http:\/\/dachengge.com\/index.php?rest_route=\/wp\/v2\/posts\/19"}],"collection":[{"href":"http:\/\/dachengge.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/dachengge.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/dachengge.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/dachengge.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=19"}],"version-history":[{"count":0,"href":"http:\/\/dachengge.com\/index.php?rest_route=\/wp\/v2\/posts\/19\/revisions"}],"wp:attachment":[{"href":"http:\/\/dachengge.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=19"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/dachengge.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=19"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/dachengge.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=19"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}