class House:     # 매물 초기화     def __init__(self, location, house_type, price, completion_year):         self.location = location         self.house_type = house_type         self.deal_type = deal_type         self.price = price         self.completion_year = completion_year     # 매물 정보 표시     def show_detail(self):         print(self.location, self.house_type, self.deal_type\             , self.price, self.completion_year) houses = [] house1 = House("강남", "아파트", "매매", "10억", "2010년") house2 = House("마포", "오피스텔", "전세", "5억", "2007년") house3 = House("송파", "빌라", "월세", "500/50", "2000년") 안녕하세요! house1 = House("강남", "아파트", "매매", "10억", "2010년") 이 부분에서 TypeError: __init__() takes 5 positional arguments but 6 were given 오류가 계속 뜨는데요 5개씩 짝이 맞지 않나용..??ㅠㅠ 왜 오류가 뜨는걸까요?!

thymeleaf가 URI is not registered가 뜹니다 스프링부트 생성 때 의존성추가 했고 마켓플레이스에서는 thymeleaf를 검색해도 나오지 않는데 무엇을 잘못했을까요?ㅠㅠ 스프링은 2.4.3 자바 11입니다

업무자동화 + 웹크롤링 강의 듣고 싶은데 예전에 다른 분 질문 답변에 이와 관련하여 강의 계획중이라고 하신걸 본것 같아 문의드려요! 혹시 언제쯤 강의가 개설될지 대략적으로라도 알려주시면 감사하겠습니다. ex1) 올해 상반기 안에는 나올꺼 같다.  ex2) 아니다 무슨소리냐 데이터 기반 주식 퀀트투자 part2를 먼저 강의할 것이기 때문에 아직 한~참 멀었다.

안녕하세요, 에릭쌤~ 대부분 최상단 네비게이션 바와 메인 배너 사이에, 그리고 메인 배너 하단에 구분선을 넣어주던데요.  사실 주위 오브젝트 색상에 따라 시각적으로 애써 보지 않으면 거의 잘 안 보이는 경우도 많던데 왜들 꼭 구분선을 넣어주나 궁금증이 들었습니다. 단순히 디자인 측면이 아니라 기능적인 용도나 특별한 이유가 있을까요?

강사님 제가 스프링 입문 강의에서 만든 프로젝트에서 member클래스에 phoneNumber라는 이름으로 varchar(255)형 필드를 하나 추가했습니다. memberForm에도 추가를 해주고 스프링 통합 테스트를 돌릴 때도 member 객체를 생성하고 set으로  phoneNumber를 추가를 해줬는데도 다음과 같은 오류가 납니다. 왜 그런 걸까요 ㅠ (오류 코드는 아래와 같습니다.) 2021-03-06 21:46:04.645  INFO 14452 --- [           main] o.s.t.c.transaction.TransactionContext   : Began transaction (1) for test context [DefaultTestContext@5b068087 testClass = MemberServiceIntegrationTest, testInstance = hello.project1.service.MemberServiceIntegrationTest@1b800a11, testMethod = 회원가입@MemberServiceIntegrationTest, testException = [null], mergedContextConfiguration = [WebMergedContextConfiguration@6f152006 testClass = MemberServiceIntegrationTest, locations = '{}', classes = '{class hello.project1.Project1Application}', contextInitializerClasses = '[]', activeProfiles = '{}', propertySourceLocations = '{}', propertySourceProperties = '{org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true}', contextCustomizers = set[org.springframework.boot.test.autoconfigure.actuate.metrics.MetricsExportContextCustomizerFactory$DisableMetricExportContextCustomizer@387a8303, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@d2de489, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@41330d4f, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@24c1b2d2, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@565f390, org.springframework.boot.test.context.SpringBootTestArgs@1, org.springframework.boot.test.context.SpringBootTestWebEnvironment@7f416310], resourceBasePath = 'src/main/webapp', contextLoader = 'org.springframework.boot.test.context.SpringBootContextLoader', parent = [null]], attributes = map['org.springframework.test.context.web.ServletTestExecutionListener.activateListener' -> true, 'org.springframework.test.context.web.ServletTestExecutionListener.populatedRequestContextHolder' -> true, 'org.springframework.test.context.web.ServletTestExecutionListener.resetRequestContextHolder' -> true, 'org.springframework.test.context.event.ApplicationEventsTestExecutionListener.recordApplicationEvents' -> false]]; transaction manager [org.springframework.orm.jpa.JpaTransactionManager@652a1a17]; rollback [true] Hibernate: select member0_.id as id1_0_, member0_.name as name2_0_, member0_.phone_number as phone_nu3_0_ from member member0_ where member0_.name=? 2021-03-06 21:46:05.163  WARN 14452 --- [           main] o.h.engine.jdbc.spi.SqlExceptionHelper   : SQL Error: 42122, SQLState: 42S22 2021-03-06 21:46:05.163 ERROR 14452 --- [           main] o.h.engine.jdbc.spi.SqlExceptionHelper   : Column "MEMBER0_.PHONE_NUMBER" not found; SQL statement: select member0_.id as id1_0_, member0_.name as name2_0_, member0_.phone_number as phone_nu3_0_ from member member0_ where member0_.name=? [42122-200] 2021-03-06 21:46:05.189  INFO 14452 --- [           main] o.s.t.c.transaction.TransactionContext   : Rolled back transaction for test: [DefaultTestContext@5b068087 testClass = MemberServiceIntegrationTest, testInstance = hello.project1.service.MemberServiceIntegrationTest@1b800a11, testMethod = 회원가입@MemberServiceIntegrationTest, testException = javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not prepare statement, mergedContextConfiguration = [WebMergedContextConfiguration@6f152006 testClass = MemberServiceIntegrationTest, locations = '{}', classes = '{class hello.project1.Project1Application}', contextInitializerClasses = '[]', activeProfiles = '{}', propertySourceLocations = '{}', propertySourceProperties = '{org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true}', contextCustomizers = set[org.springframework.boot.test.autoconfigure.actuate.metrics.MetricsExportContextCustomizerFactory$DisableMetricExportContextCustomizer@387a8303, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@d2de489, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@41330d4f, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@24c1b2d2, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@565f390, org.springframework.boot.test.context.SpringBootTestArgs@1, org.springframework.boot.test.context.SpringBootTestWebEnvironment@7f416310], resourceBasePath = 'src/main/webapp', contextLoader = 'org.springframework.boot.test.context.SpringBootContextLoader', parent = [null]], attributes = map['org.springframework.test.context.web.ServletTestExecutionListener.activateListener' -> true, 'org.springframework.test.context.web.ServletTestExecutionListener.populatedRequestContextHolder' -> true, 'org.springframework.test.context.web.ServletTestExecutionListener.resetRequestContextHolder' -> true, 'org.springframework.test.context.event.ApplicationEventsTestExecutionListener.recordApplicationEvents' -> false]] javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not prepare statement at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:154) at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1602) at org.hibernate.query.Query.getResultList(Query.java:165) at hello.project1.repository.JpaMemberRepository.findByName(JpaMemberRepository.java:33) at hello.project1.service.MemberService.validateDuplicateMember(MemberService.java:26) at hello.project1.service.MemberService.join(MemberService.java:20) at hello.project1.service.MemberService$$FastClassBySpringCGLIB$$9f40d288.invoke(<generated>) at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:779) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750) at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750) at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:692) at hello.project1.service.MemberService$$EnhancerBySpringCGLIB$$b4c4763a.join(<generated>) at hello.project1.service.MemberServiceIntegrationTest.회원가입(MemberServiceIntegrationTest.java:30) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:688) at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60) at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131) at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149) at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140) at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84) at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115) at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105) at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37) at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104) at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:210) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:206) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:131) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:65) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:108) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:96) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:75) at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:71) at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33) at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:220) at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:53) Caused by: org.hibernate.exception.SQLGrammarException: could not prepare statement at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:63) at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113) at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:186) at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareQueryStatement(StatementPreparerImpl.java:151) at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:2103) at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:2040) at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:2018) at org.hibernate.loader.Loader.doQuery(Loader.java:948) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:349) at org.hibernate.loader.Loader.doList(Loader.java:2849) at org.hibernate.loader.Loader.doList(Loader.java:2831) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2663) at org.hibernate.loader.Loader.list(Loader.java:2658) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:506) at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:400) at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:219) at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1414) at org.hibernate.query.internal.AbstractProducedQuery.doList(AbstractProducedQuery.java:1625) at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1593) ... 82 more Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Column "MEMBER0_.PHONE_NUMBER" not found; SQL statement: select member0_.id as id1_0_, member0_.name as name2_0_, member0_.phone_number as phone_nu3_0_ from member member0_ where member0_.name=? [42122-200] at org.h2.message.DbException.getJdbcSQLException(DbException.java:453) at org.h2.message.DbException.getJdbcSQLException(DbException.java:429) at org.h2.message.DbException.get(DbException.java:205) at org.h2.message.DbException.get(DbException.java:181) at org.h2.expression.ExpressionColumn.getColumnException(ExpressionColumn.java:163) at org.h2.expression.ExpressionColumn.optimize(ExpressionColumn.java:145) at org.h2.expression.Alias.optimize(Alias.java:52) at org.h2.command.dml.Select.prepare(Select.java:1206) at org.h2.command.Parser.prepareCommand(Parser.java:744) at org.h2.engine.Session.prepareLocal(Session.java:657) at org.h2.server.TcpServerThread.process(TcpServerThread.java:278) at org.h2.server.TcpServerThread.run(TcpServerThread.java:183) at java.base/java.lang.Thread.run(Thread.java:834) at org.h2.message.DbException.getJdbcSQLException(DbException.java:453) at org.h2.engine.SessionRemote.done(SessionRemote.java:611) at org.h2.command.CommandRemote.prepare(CommandRemote.java:85) at org.h2.command.CommandRemote.<init>(CommandRemote.java:51) at org.h2.engine.SessionRemote.prepareCommand(SessionRemote.java:481) at org.h2.jdbc.JdbcConnection.prepareCommand(JdbcConnection.java:1235) at org.h2.jdbc.JdbcPreparedStatement.<init>(JdbcPreparedStatement.java:76) at org.h2.jdbc.JdbcConnection.prepareStatement(JdbcConnection.java:352) at com.zaxxer.hikari.pool.ProxyConnection.prepareStatement(ProxyConnection.java:337) at com.zaxxer.hikari.pool.HikariProxyConnection.prepareStatement(HikariProxyConnection.java) at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$5.doPrepare(StatementPreparerImpl.java:149) at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:176) ... 98 more

3:37초에 한번에 컨테이너, 이미지.네트워크 모두 삭제하고 싶다라는 말은  A에서 다른환경의 B에게 보낸후에 A 에게 남아있는 컨테이너 잔여를 말하는건가요?  예를들어 카카오톡을 설치파일을 다운 받으면 설치 후에도 남아있는 install 파일이 저 쓰지않는 도커랑 비슷할까요?  커맨드도 중요하지만 중간중간 이 커멘드를 치면 이렇게 동작해 라는 이미지가 있으면 더욱 이해도가 높아질거 같습니다 흑흑 ㅠ

안녕하세요 이해하기 쉽게 알려주시는 도커 강의 너무 만족하고 잘 보고있는 학생입니다  영상을 보다가 Stop 과 Kill을 보여 의문점이 생겨서 문의 드립니다 제가 여기 강의에서 배운 도커라는 개념은  A에서 환경(버전,os...) 뭔가가 다른 환경에서 파일이나, 데이터를 컨테이너에 실어서 전송해준다 라고 이해를 하였습니다 근데 Stop 이랑 Kill 이라는 것은 전송하고 싶은 데이터를 전송하는 중에 Stop이나 Kill을 써서 중단을 한다는 말인가요? A에서 B로 배포나 뭔가를 옮길때 굳이 저 Stop과 Kill을 쓸 일이 있을지 의문입니다 어차피 통신은 양쪽다 된다는 가정하에 뭔가를 옮기는 행위를 도커라 배웠는데 Kill이나 Stop이 어디에 쓰이는지 궁금합니다 저같으면 일단 파일을 모두 보낸후에 받은 쪽에서 그냥 지울거 같습니다 통신중인걸 중간에 지우지 않고 아니면 혹시 A에서 B로 24시간 뭔가를 계속 쏴주어야 하나요??   혹시 제가 이해하고 있는 개념이 도커의 개념과 많이 다르다면  힌트좀 부탁드립니다 꾸벅  

아래와 같은 오류가 나는 이유가 뭘까요? 학생 이름을 넣어서 특정 점수를 넘는 학생에게 합격 그렇지 못한 학생에게 불합격 글자가 뜨게 하고 싶습니다. range가 초과하는 이유도 모르겠고 70점을 넘는 학생도 있는데 모든 학생이 불합격으로 뜨는 이유도 궁금합니다.

a = 3 b = 0 while b=a:     print(a)     b=b+1 위와 같이 코드를 짰습니다.  코드를 짠 목적은 3이 3번 출력되도록 하기 위함입니다. 코드를 짜고 난 후 실행을 하니  while b=a: ^ SyntaxError: invalid syntax와 같은 오류가 납니다. 이유가 뭔가요?

선생님~ 기존 강의와 코드에서는 fit_transform 인자로 (X_train, y_train) 둘다 들어갔는데 X_train만 넣어도  X_train.shape 결과는 똑같이 나오더라고요.. y_train도 넣어주는 이유가 있나요?  피처를 다항 선생님~ (1번코드) 기존 강의와 코드에서는 fit_transform 인자로 (X_train, y_train) 둘다 들어갔는데 (2번코드) X_train만 넣어도 X_train.shape 결과는 똑같이 나오더라고요.. y_train도 넣어주는 이유가 있나요?  PolynomialFeatures가 피처엔지니어링 기법으로 피처를 다항식으로 변환하기 위함인데.. y_train은 왜 넣어주셨는지 궁금합니다. 

안녕하세요! 저는 강사님처럼 똑같이 따라했는데 톰캣도 연결이 잘 된 것 같거든요 그런데 localhost:8080을 치면 "whitelabel Error Page"가 떠버려요.. 그래서 index.html 파일에 오른쪽버튼을 클릭하여 마우스를 놓고 "run index.html" 을 클릭하여야 hello가 쓰여있는 페이지가 뜨는데 왜 이러는 걸까요? 그리고 이렇게 되도 정상인 건가요..?ㅠㅠ 톰캣에 문제가 있는 걸 까요 ㅠㅠ

저도 가로스크롤이 생겨 질문을 찾아보게 되었는데 가로스크롤에대해서 여쭤보신분 답글에 선생님이 영상을 업데이트해주신다는 댓글을 보았습니다. 영상을 다시 보았는데 혹시 아직 업데이트가 안된것이 맞나요 ? 소스코드에는 card-list-con이라는 div태그가 추가되어있는게 확인이 됬습니다!

댓글 숫자를 출력하려고 하는데 그대로 옆에 텍스트를 추가하는 방식은 안되던데   ex) {post.comments.length}  좋은 방법 알려주시면 감사여  https://github.com/node-hyun/nodebird-deploy/blob/master/front/components/PostCard.js

exe 파일만 생성이 안되네요...

안녕하세요, 강사님. static class SameBeanConfig을 만들면서 syntax 에러로 테스트 자체가 수행이 안되어 질문드립니다. 현재 윈도우 이클립스ide 자바 11버전 사용하고 있습니다. class 밑부분에 빨간줄로 Syntax error on token "class", @ expected 라고 나고 테스트에는  java.lang.Error: Unresolved compilation problems:  Syntax error on token "class", @ expected Syntax error, insert "}" to complete Block Syntax error on token "}", delete this token 라고 나옵니다.  package hello.core.beanfind; import org.junit.jupiter.api.DisplayName; import org.junit.jupiter.api.Test; import org.springframework.context.annotation.AnnotationConfigApplicationContext; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import hello.core.AppConfig; import hello.core.member.MemberRepository; import hello.core.member.MemoryMemberRepository; class ApplicationContextSameBeanFindTest { AnnotationConfigApplicationContext ac = new AnnotationConfigApplicationContext(SameBeanConfig.class); @Test @DisplayName("타입으로 조회 시 같은 타입이 둘 이상 있으면, 중복 오류가 발생한다") void findBeanByTypeDuplicate() { MemberRepository bean = ac.getBean(MemberRepository.class); } @Configuration static class SameBeanConfig() { @Bean public MemberRepository memberRepository1() { return new MemoryMemberRepository(); } @Bean public MemberRepository memberRepository2() { return new MemoryMemberRepository(); } } }

선생님 view로  jsp를 한 번 써 보려고 구글검색해서 해 보았는데요  그래들에  임베디드 jsper  가지고 와서 리프레쉬 하고 서버 재시작하면 계속 오류가 납니다.   jsp로  view를 사용하려면 어떻게 하면 될까요?  부탁드려요~

안녕하세요~ 예제 2번에서 입력예제는 아래와 같고 10 3 2 10 1 5 4 6 8 9 6 출력 예제는 아래와 같습니다. 3  LRR > 그런데 저희가 구현한 알고리즘 대로라면 10도 출력 되어야 할 것 같은데요. (last = 9, lt = 10 이고 rt = 8이 되는 시점부터 생각해보면) 10 이 출력된다면 4가 나와야 할 것 같습니다. 그런데 출력 결과는 3이어서 코드의 어떤 부분에 의해서 10이 제외 된 것인지 궁금합니다! 제가 맥이어서 테스트를 돌려보지 못해서요 ㅠㅠ 감사합니다~!

그리고 sliding window 방식으로 푸는 것도 올려주실 수 있을까요??

API 서버가 먹통이네요... 화면에 보이는것이 없으니, 실습을 할 수가 없습니다. 다른 API로 변경 혹은 API 서버가 오류인 경우 내부 데이터를 가져오는것으로 변경해주셨으면 합니다.

우선 질문들에 비슷한 오류가 많길래 거기 답변대로 해보았는데도 오류가 해결되지 않아 질문드립니다. 제가 해본것은  1. yml파일 띄어쓰기 확인 2. 저는 junit5를 사용해서 어노테이션 적절히 변경 3. h2 실행을 시키고 테스트하기  4. build.gradle에 h2 버젼 지정 이렇게 해보았는데 오류가 잡히질 않네요; Failed to load ApplicationContext java.lang.IllegalStateException: Failed to load ApplicationContext at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:132) at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:124) at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:190) at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:132) at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:244) at org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:138) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$6(ClassBasedTestDescriptor.java:350) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.executeAndMaskThrowable(ClassBasedTestDescriptor.java:355) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$7(ClassBasedTestDescriptor.java:350) at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:312) at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:735) at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:734) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestInstancePostProcessors(ClassBasedTestDescriptor.java:349) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$instantiateAndPostProcessTestInstance$4(ClassBasedTestDescriptor.java:270) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:269) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$2(ClassBasedTestDescriptor.java:259) at java.base/java.util.Optional.orElseGet(Optional.java:369) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$3(ClassBasedTestDescriptor.java:258) at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:101) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:100) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:65) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$1(NodeTestTask.java:111) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.prepare(NodeTestTask.java:111) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:79) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:108) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:96) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:75) at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:99) at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$000(JUnitPlatformTestClassProcessor.java:79) at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:75) at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:61) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24) at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33) at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94) at com.sun.proxy.$Proxy2.stop(Unknown Source) at org.gradle.api.internal.tasks.testing.worker.TestWorker.stop(TestWorker.java:133) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24) at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:182) at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:164) at org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:414) at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64) at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56) at java.base/java.lang.Thread.run(Thread.java:834) Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1786) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:602) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1153) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:907) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:582) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:123) at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:99) at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124) ... 92 more Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment] at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:275) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152) at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:176) at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:127) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1224) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1255) at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1845) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1782) ... 108 more Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:100) at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:54) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:137) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101) at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263) ... 125 more