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from datetime import datetime
import socket
import sys
import time

def run():
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    sock.connect(('localhost', 4444))

    msg = "[{}] Hello world!!".format(str(datetime.now())).encode("UTF-8")

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"""
Install greenlet before running this: pip install greenlet
"""
from greenlet import greenlet

class GUIFramework:
    """
    This class simulates a GUI framework, that has its own main loop.
    For simplicity, the loop is just waiting for user input from stdin, and when a key
    is pressed, a user-defined callback is invoked.

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Apples and Orange problem

In front of you are 3 boxes. One box contains only apples, another box contains only oranges, and the last contains both apples and oranges. The first box has the label "apples," the second "oranges," and the third "apples and oranges." Unfortunately all of the labels are wrong. Your job is to fix the labels. You are not allowed to peek inside any of the boxes. But you can ask for a sample from any box. You point to a box, and you get a fruit from that box. What is the minimum number of samples you need to label all of the boxes correctly?

http://mkcohen.com/saturday-puzzle-9-apples-and-oranges

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Introduction

This document shows how to create a Debian package for an existing Python library.

Before doing this, it is a good idea to check if there isn't an existing Debian package for the library to be packaged.

For Debian: https://www.debian.org/distrib/packages

For Ubuntu: https://packages.ubuntu.com/

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Summary

	Closure	Associativity	Identity	Invertibility
Magma	Required
Semigroup	Required	Required
Monoid	Required	Required	Required
Group	Required	Required	Required	Required

Magma

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Data

Data are observation of real-world phenomena. E.g. stock market data might involve observations of daily stock prices, announcements of earnings by individual companies, opinion articles from pundits.

Tasks

Data can help us answer some questions. E.g. which stocks should I invest in? The tasks are how we get to the answers.

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GPG Cheat Sheet

Generate a new key

$ gpg --gen-key
Please select what kind of key you want:

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import sys

import py
import pytest
from xprocess import ProcessStarter

from servers import ItalicTCPHandler, EchoTCPHandler

python_executable_full_path = sys.executable
python_server_script_full_path = py.path.local(__file__).dirpath("servers.py")

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import socketserver
import sys
import time


class EchoTCPHandler(socketserver.StreamRequestHandler):
    def handle(self):
        data = self.rfile.readline().strip().decode('UTF-8')
        print('[ECHO SERVER] Received data: {}'.format(data))
        self.wfile.write('Echo: {}'.format(data).encode('UTF-8'))