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pythonclassCustomHTTPError(Exception):pass
classDataParserError(Exception):pass
deffetchdata(url):try:response=requests.get(url)ifresponse.statuscode!=200:raiseCustomHTTPError(f"HTTPerror:{response.status_code}")returnresponse.textexceptRequestExceptionase:raiseCustomHTTPError(f"Requestexception:{str(e)}")
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importpandasaspdfromsklearn.clusterimportKMeans#¼ÙÉèÎÒÃÇÓÐÓû§ä¯ÀÀºÍ¹ºÂòÊý¾Ýdata={'user_id':1,1,2,2,3,3,'item_id':1,2,1,3,2,3,'purchase_amount':100,200,150,250,300,100}df=pd.DataFrame(data)#Êý¾ÝÔ¤´¦ÀíX=df'purchase_amount'#ʹÓÃKMeans½øÐоÛÀà·ÖÎökmeans=KMeans(n_clusters=3,random_state=0).fit(X)df'cluster'=kmeans.labels_#Êä³ö¸ß¼ÛÖµ¿Í»§ÈºÌåhigh_value_customers=dfdf'cluster'==2#¼ÙÉè´Ø2ÊǸ߼ÛÖµ¿Í»§print(high_value_customers)
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fromseleniumimportwebdriverurl='https://example.com'driver=webdriver.Chrome()driver.get(url)#µÈ´ýÒ³Ãæ¼ÓÔØÍê³Éimporttimetime.sleep(5)#ÌáÈ¡Êý¾Ýdata=driver.find_elements_by_class_name('target-class')foritemindata:print(item.text)driver.quit()
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