一旦条件满足，Python累积1并重置为0

时间：2018-05-23 14:22:54

标签： python pandas machine-learning

目前我有一个数据集，如果ColA为0，我会尝试累积该值，如果ColA再次为1，则将值重置为0（重新开始计数）。

ColA  Accumulate
 1        0
 0        1
 1        0 
 1        0 
 0        1
 1        0
 0        1 
 0        2 
 0        3
 1        0
 0        1
 0        2
 0        3

我的预期结果如下

test['Value'] = np.where ( (test['ColA']==1),test['ColA'].cumsum() ,0) 



ColA   Value
 1        0
 0        1
 1        0 
 1        0 
 0        2
 1        0
 0        3 
 0        4 
 0        5
 1        0
 0        6
 0        7
 0        8

我使用的当前代码

Info:   SELECT * FROM `users` WHERE email!='NULL' AND `email`='juan@' AND `password`='dasasdassda'
Info:   SELECT * FROM `acl_master` WHERE id='0'
Severe:   Generating incomplete JSON
Warning:   StandardWrapperValve[com.dgp.main.ApplicationConfig]: Servlet.service() for servlet com.dgp.main.ApplicationConfig threw exception
java.lang.IllegalArgumentException: wrong number of arguments
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.yasson.internal.model.GetFromGetter.internalGetValue(GetFromGetter.java:28)
    at org.eclipse.yasson.internal.model.GetValueCommand.getValue(GetValueCommand.java:34)
    at org.eclipse.yasson.internal.model.ReflectionPropagation.getValue(ReflectionPropagation.java:72)
    at org.eclipse.yasson.internal.model.PropertyModel.getValue(PropertyModel.java:257)
    at org.eclipse.yasson.internal.serializer.ObjectSerializer.marshallProperty(ObjectSerializer.java:76)
    at org.eclipse.yasson.internal.serializer.ObjectSerializer.serializeInternal(ObjectSerializer.java:59)
    at org.eclipse.yasson.internal.serializer.AbstractContainerSerializer.serialize(AbstractContainerSerializer.java:60)
    at org.eclipse.yasson.internal.Marshaller.serializeRoot(Marshaller.java:118)
    at org.eclipse.yasson.internal.Marshaller.marshall(Marshaller.java:76)
    at org.eclipse.yasson.internal.JsonBinding.toJson(JsonBinding.java:98)
    at org.glassfish.jersey.jsonb.internal.JsonBindingProvider.writeTo(JsonBindingProvider.java:118)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.invokeWriteTo(WriterInterceptorExecutor.java:266)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:251)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:163)
    at org.glassfish.jersey.server.internal.JsonWithPaddingInterceptor.aroundWriteTo(JsonWithPaddingInterceptor.java:109)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:163)
    at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:85)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:163)
    at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1135)
    at org.glassfish.jersey.server.ServerRuntime$Responder.writeResponse(ServerRuntime.java:662)
    at org.glassfish.jersey.server.ServerRuntime$Responder.processResponse(ServerRuntime.java:395)
    at org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:385)
    at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:280)
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:272)
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:268)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:316)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:298)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:268)
    at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:289)
    at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:256)
    at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:703)
    at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:416)
    at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:370)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:389)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:342)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:229)
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1580)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:258)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:652)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:591)
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:371)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:238)
    at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:463)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:168)
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:206)
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:180)
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:242)
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112)
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:539)
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:593)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:573)
    at java.lang.Thread.run(Thread.java:745)

谢谢，请帮忙

2 个答案:

答案 0 :(得分：2)

如果效果很重要，请使用enter image description here：

a = df['ColA'] == 0
cumsumed = a.cumsum()
df['Accumulate'] = cumsumed-cumsumed.where(~a).ffill().fillna(0).astype(int)

print (df)
    ColA  Accumulate
0      1           0
1      0           1
2      1           0
3      1           0
4      0           1
5      1           0
6      0           1
7      0           2
8      0           3
9      1           0
10     0           1
11     0           2
12     0           3

答案 1 :(得分：0)

这应该这样做：

test['Value'] = (test['ColA']==0) * 1 * (test['ColA'].groupby((test['ColA'] != test['ColA'].shift()).cumsum()).cumcount() + 1)

这是this answer的改编。

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