HoweChen

from decimal import Decimal, ROUND_HALF_UP

origin_num = Decimal('11.245')
answer_num = origin_num.quantize(Decimal('0.00'), rounding=ROUND_HALF_UP)
print(answer_num)

HoweChen

Redis 数据备份与恢复

Redis SAVE 命令用于创建当前数据库的备份。

语法

redis Save 命令基本语法如下：

redis 127.0.0.1:6379> SAVE 

HoweChen

from multiprocessing.managers import SyncManager


class PointClass:
    def __init__(self, value):
        self.value = value


class MathsClass:
    def __init__(self, point_one, point_two):

HoweChen

# setup the logging information
import datetime
today = datetime.today()
logging.basicConfig(format="%(asctime)s %(levelname)s %(name)s %(message)s",
                    datefmt="%d-%M-%Y %H:%M:%S", level=logging.DEBUG, handlers=[
                      logging.FileHandler(filename=f"{today}.log"),
                      logging.StreamHandler()
                    ])
logger = logging.getLogger()
logger.info("Test")

HoweChen

try:
    # logs folder initialization
    self.logs_path = Path("./logs")
    self.logs_path.mkdir(exist_ok=True)
    # repos folder initialization
    self.repos_path = Path("./repos")
    self.repos_path.mkdir(exist_ok=True)
    # issues folder initialization
    self.issues_path = Path("./issues")
    self.issues_path.mkdir(exist_ok=True)

HoweChen

public class App 
{
    public static void main( String[] args )
    {
        TestService testService = new TestServiceImpl();
        String name = "testName";
        EnumMap<TestService.UserInfoProperty,Object> userInfo = testService.getUserInfoByName(name);
         userInfo.entrySet().iterator();
        System.out.println(userInfo.get(TestService.UserInfoProperty.Name));
        System.out.println(userInfo.get(TestService.UserInfoProperty.ROOM));

HoweChen

// traditional method
ArrayList<String> list = new ArrayList<String>();
list.add("A");
list.add("B");
list.add("C");

// one-line method
ArrayList<String> list = new ArrayList<>(Arrays.asList("A","B","C"));

HoweChen

List<?> list = new ArrayList<>( myQueue );

? can be be the class you want to transfer

HoweChen

public static strictfp String humanReadableByteCount(long bytes, boolean si) {
    int unit = si ? 1000 : 1024;
    long absBytes = bytes == Long.MIN_VALUE ? Long.MAX_VALUE : Math.abs(bytes);
    if (absBytes < unit) return bytes + " B";
    int exp = (int) (Math.log(absBytes) / Math.log(unit));
    long th = (long) (Math.pow(unit, exp) * (unit - 0.05));
    if (exp < 6 && absBytes >= th - ((th & 0xfff) == 0xd00 ? 52 : 0)) exp++;
    String pre = (si ? "kMGTPE" : "KMGTPE").charAt(exp - 1) + (si ? "" : "i");
    if (exp > 4) {
        bytes /= unit;

HoweChen

public class Test {
 
    public static void main(String[] args) {
        List<String> list1 = new ArrayList<String>();
        list1.add("1");
		list1.add("2");
		list1.add("3");
		list1.add("5");
		list1.add("6");