DirkHoffmann

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright © Dirk Hoffmann -CPPM-, 2020
import socket

UDP_IP = "255.255.255.255"
UDP_PORT = 60000
msg = bytearray.fromhex('7effff0111000000000000000000000000000000000000000000000000000010020d')

print("UDP target IP:", UDP_IP)

DirkHoffmann

/**
 * Return a string padded with leading zeroes for a given total length.
 * There are other solutions around in stackoverflow etc., in particular 
 * org.apache.commons.lang.StringUtils.leftPad(), but this one is a concise
 * and cheap solution for the particular case of 0-padding, as a reasonable 
 * feature for fixed-length <strong>binary</strong> is missing in the String 
 * and Integer classes up to now.
 * 
 * @param s
 * 	Input string (in particular binary form of number) to be padded.

DirkHoffmann

    try {
        // Create temp file.
        File temp = File.createTempFile("pattern", ".suffix");

        // Delete temp file when program exits.
        temp.deleteOnExit();

        // Write to temp file
        BufferedWriter out = new BufferedWriter(new FileWriter(temp));
        out.write("aString");

DirkHoffmann

def enniceUnicodeError(ex):
    return "<{0}>: {1}".format(ex.__class__.__name__, str(ex))

if __name__ == '__main__':
    /* Make dummy exception */
    ux=UnicodeDecodeError('hitchhiker', b"", 42, 43, 'the universe and everything else')
    /* This is how to use the method : */
    print enniceUnicodeError(ux)

DirkHoffmann

class Singleton(type):
    """
    Comme discuté sur la liste python@services.cnrs.fr (accès restreint à la communauté ESR)
     https://listes.services.cnrs.fr/wws/arc/python/2015-04/msg00006.html
    - Solution pour singleton co(?)-production Loïc Gouarin, Konrad Hinsen et al.
    """
    _instances = {}
    def __call__(self, *args, **kwargs):
        key = (str(self), args, str(kwargs))
        if key not in self._instances: