ali1234

#!/usr/bin/env python

# BB-8 Python driver by Alistair Buxton <a.j.buxton@gmail.com>

from bluepy import btle

import time

class BB8(btle.DefaultDelegate):
    def __init__(self, deviceAddress):

nileshtrivedi

Programming: Mostly A Hate Story

I wanted to do digital signatures validation, preferably ed25519, inside PostgreSQL triggers. Here is how it went:

Surely pgcrypto must be supporting it, right? Most Postgres cloud hosting providers already support pgcrypto so this would be perfect. Right?

Well, pgcrypto only supports PGP and that too excludes digital signatures. Let's give PGP a try anyway and see how far can we go.

Installed gpg to generate the keys and the experience is less than pleasant. Sometimes it gets stuck at the passphrase prompt. The keys are too big, but still I can make pgcrypto's pgp_pub_encrypt and pgp_pub_decrypt methods work. Just remeber to convert keys in ASCII to binary and vice-versa using armor()/dearmor(). I hate the big key size in RSA, even though GPG defaults to 2048-bit keys and not the more secure 4096-bit ones. Let's look into ed25519 now.

seandenigris

"Adapted from http://www.slideshare.net/nourybouraqadi/pharo-networking-by-example
$! denotes the end of a message
"

| connectionSock interactSock request stream |
connectionSock := Socket newTCP.
[
		connectionSock listenOn: 8888 backlogSize: 10.
		interactSock := connectionSock waitForAcceptFor: 15.
		stream := SocketStream on: interactSock.

bee-san

# based off of this code https://gist.github.com/nandajavarma/a3a6b62f34e74ec4c31674934327bbd3
# Brandon Skerritt
# https://skerritt.tech

def binary_search(the_array, item, start, end):
    if start == end:
        if the_array[start] > item:
            return start
        else:
            return start + 1

gdamjan

from aiohttp import web
from threading import Thread
import asyncio
import time, uuid

loop = asyncio.get_event_loop()

def long_blocking_thing(sleep):
    time.sleep(sleep)
    return 42

matthewearl

#!/usr/bin/env python3
#
# Copyright (c) 2018 Matthew Earl
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:

surganov

Essential Bret Victor

The designer and programmer who main goal is to inspire other creators.

• Официальный сайт
• Шоурил
• CV

The best

radames

from pygame.locals import KEYDOWN, K_ESCAPE, K_q
import pygame
import cv2
import sys

camera = cv2.VideoCapture(1)
pygame.init()
pygame.display.set_caption("OpenCV camera stream on Pygame")
screen = pygame.display.set_mode([1280, 720])

RJ722

import sys
import tokenize


class DoubleQuotesChecker:
    msg = "single quotes detected, use double quotes instead"
    def __init__(self):
        self.violations = []

    def find_violations(self, filename, tokens):

shakna-israel

Obfuscating Python

Obfuscation isn't difficult in most programming languages. It's why we have "good practices" because it is so easy to hide what you mean in badly written code.

Obfuscation tends to be even easier in dynamic languages because of how forgiving they tend to be - and because they tend to give you direct access to the environment so that you can manipulate it.

Today, for fun, I'm going to obfuscate this code:

def _(n):

if n <= 0: