Question

我在jupyter笔记本中有以下代码：

import h5py
import pandas as pd
import matplotlib.pyplot as plt

df = pd.read_hdf('accounting-2018-10-deid.h5', 'table')
df.columns
Out[4]:
Index(['group', 'owner', 'job_number', 'submission_time', 'start_time',
   'end_time', 'failed', 'exit_status', 'granted_pe', 'slots',
   'task_number', 'maxvmem', 'h_data', 'h_rt', 'highp', 'exclusive',
   'h_vmem', 'gpu', 'pe', 'slot', 'wait_time', 'wtime', 'campus'],
  dtype='object')

各列的含义：

owner: the owner of a job
group: the group a owner belongs to; a group can have one or more owners

任务是：对于每个组，列出用户数，并列出所有这些用户（即具有相同“组”字段的用户）。例如：第1组（4个用户）：user2，user32，user41，user56？

我尝试使用groupby（），但没有得到正确的答案。请帮我。

Answer 1

这对您有用吗？

import java.io.IOException;
import java.nio.file.*;
import java.util.*;
plugins {
    id 'java-library'
    id 'application'
    id 'distribution'
}

repositories {
    jcenter()
}
sourceCompatibility = '1.8'
targetCompatibility = '1.8'
dependencies {
    testImplementation 'junit:junit:4.12'
}
String myMainClass='p.Main'
jar {
  manifest {
    attributes(
      'Main-Class': myMainClass
    )
  }
}
application {
    mainClassName = myMainClass
}
class Hack {
    static String[] hack() throws IOException {
        System.out.println("Working Directory = "+System.getProperty("user.dir"));
        String dir="./.settings";
        String name="org.eclipse.jdt.core.prefs";
        File file=new File(dir,name);
        String[] strings=new String[3];
        for(int i=0;i<strings.length;i++)
            strings[i]="";
        if(file.exists()) System.out.println(file.toString()+" exists.");
        else return strings;
        List<String> lines=new ArrayList<>();
        try {
            if(usePath) {
                Path path=FileSystems.getDefault().getPath(dir,name);
                lines=java.nio.file.Files.readAllLines(path);
            } else {
                BufferedReader bufferedReader=new BufferedReader(new FileReader(file));
                for(String line=bufferedReader.readLine();line!=null;line=bufferedReader.readLine())
                    lines.add(line);
                bufferedReader.close();
            }
            int index;
            for(String line:lines) {
                if(line.startsWith("org.eclipse.jdt.core.compiler.compliance")) {
                    index=line.indexOf("=");
                    if(index>0) {
                        System.out.println("compliance: "+line.substring(index+1));
                        strings[0]=line.substring(index+1);
                    }
                }
                if(line.startsWith("org.eclipse.jdt.core.compiler.source=1.8")) {
                    index=line.indexOf("=");
                    if(index>0) {
                        System.out.println("source: "+line.substring(index+1));
                        strings[1]=line.substring(index+1);
                    }
                }
                if(line.startsWith("org.eclipse.jdt.core.compiler.codegen.targetPlatform")) {
                    index=line.indexOf("=");
                    if(index>0) {
                        System.out.println("target: "+line.substring(index+1));
                        strings[2]=line.substring(index+1);
                    }
                }
            }
        } catch(Exception e) {
            System.out.println("caught: "+e);
        }
        return strings;
    }
    public static void main(String[] args) throws IOException {
        hack();
    }
    static boolean usePath;
}
println("java version is: ${JavaVersion.current()}")
String[] strings=Hack.hack();
if(strings[1]!="") {
    println 'setting source'
    sourceCompatibility = strings[1]
}
if(strings[2]!="") {
    println 'setting target'
    targetCompatibility = strings[2]
}

熊猫：如何列出每个组以及组中所有用户的总数？

1 个答案: