inactivist

Hivemq MQTT Series

• MQTT Essentials Part 1: Introducing MQTT
• MQTT Essentials Part 2: Publish & Subscribe
• MQTT Essentials Part 3: Client, Broker and Connection Establishment
• MQTT Essentials Part 4: MQTT Publish, Subscribe & Unsubscribe
• MQTT Essentials Part 5: MQTT Topics & Best Practices
• MQTT Essentials Part 6: Quality of Service Levels
• MQTT Essentials Part 7: Persistent Session and Queuing Messages
• [MQTT Essentials Part 8:

inactivist

/**
 * Wait for serial connection, with timeout
 * @param timeout_milis The maximum time to wait for serial port, in milliseconds
 *
 * usage:
 * 
 * void setup() {
 *   Serial.begin(9600);
 *   // Wait up to 3 seconds for serial connection
 *   waitForSerial(3000);

inactivist

;
; The GIMP -- an image manipulation program
; Copyright (C) 1995 Spencer Kimball and Peter Mattis
;
; Copy Visible & Paste as Layer script  for GIMP 2.4
; Created by Art Wade
;
; Tags: tool
;
; Author statement:

inactivist

def set_up_dag_run(context, dag_run_obj):
    dag_run_obj.payload = {"config": context["config"]}
    dag_run_obj.run_id = str(uuid4())
    print context
    return dag_run_obj
    
def launch_workflow_command(args):

    config_location = args.config_location
    analysis_id = args.analysis_id

inactivist

PyCon 2016 Tech Talks of Interest

Here's my list of interesting technical talks from PyCon 2016... stashed here for a future deep dive.

Videos on YouTube

TODO: Categorize

• Mike Graham - The Life Cycle of a Python Class // Speaker Deck
  • If you're defining __new__, write a function instead of a class. (Slide 18)
• Flask for Fun and Profit // Speaker Deck

inactivist

Installing PhantomJS 2.x on Ubuntu is done manually at present. Here's a recipe I like.

• Download PhantomJS latest stable http://phantomjs.org/download.html
• Extract tarball contents into /usr/local/share
• In this example, latest tarball is named phantomjs-2.1.1-linux-x86_64.tar.bz2 and will extract to /usr/local/share/phantomjs-2.1.1-linux-x86_64

PHANTOM_JS_FILES=/usr/local/share/phantomjs-2.1.1-linux-x86_64
sudo ln -s ${PHANTOM_JS_FILES}/bin/phantomjs /usr/local/share/phantomjs
sudo ln -s ${PHANTOM_JS_FILES}/bin/phantomjs /usr/local/bin/phantomjs
sudo ln -s ${PHANTOM_JS_FILES}/bin/phantomjs /usr/bin/phantomjs

inactivist

"""
Convert a CFFI cdata structure to Python dict.

Based on http://stackoverflow.com/q/20444546/1309774 with conversion of
char[] to Python str.

Usage example:

>>> from cffi import FFI
>>> ffi = FFI()

inactivist

import os

def is_heroku():
    """Hack to return true if we're running inside a Heroku container.

    Tested on Cedar stack.
    """
    return os.environ.get('PYTHONHOME', '').find('.heroku') != -1

inactivist

"""

Simple view decorator for flask and mongoengine/pymongo to auto-retry with delay on
pymongo.errors.AutoReconnect exception.

"""
from functools import wraps
import time
from pymongo.errors import AutoReconnect
import flask

inactivist

#==============================================================
#      .picasa.ini FILE STRUCTURE
# 
#   reverse-engineered by Franz Buchinger <[email protected]>
#   licensed to the public domain
#
#   Picasa Version(s): 3.8.0
#
#  Changelog:
#  v0.1: initial release