Kenji-H

import signal
import time


def sigint_handler(num, frame):
    print("received SIGINT!")


def sigtstp_handler(num, frame):
    print("received SIGTSTP!")

Kenji-H

Kenji-H

# remove empty element from list
x  = [1,2,3,'',4,5,'']
filter(None, x)

# path exist check
import os
os.path.exists('/home/kenjih')

# create path string
import os

Kenji-H

import static java.lang.Math.*;
import static java.util.Arrays.*;
import static java.math.BigInteger.*;
import java.io.*;
import java.util.*;

@SuppressWarnings("unused")
public class B {
	Scanner sc = new Scanner(System.in);

Kenji-H

import static java.lang.Math.*;
import static java.util.Arrays.*;
import static java.math.BigInteger.*;
import java.io.*;
import java.util.*;

@SuppressWarnings("unused")
public class A {
	Scanner sc = new Scanner(System.in);

Kenji-H

import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;