Truffle is an amazing suite of tools created by Consensys to develop smart contracts for the Ethereum blockchain network. However, it can be a bit jarring to make the leap from local development to the real test network, ropsten. Required Setup For this walk through, I have installed: Node (LTS) Truffle I will be using … [Read more…]
Step Functions, State Machines, and Lambdas oh my! AWS has really been expanding what you can do without needing to actually stand up any servers. I’m going to walk through a very basic example of how to get going with your own Python code to create an ETL (Extract Transform Load) process using Amazon’s services. And … [Read more…]
It can be a real pain to upload huge files. Many services limit their upload sizes to a few megabytes, and you don’t want a single connection open forever either. The super simple way to get around that is simply send the file in lots of small parts, aka chunking. Finished code example can be … [Read more…]
Dealing with communications across programs, processes or even threads can be a real pain in the patella. Each situation usually calls for something slightly different and has to work with a limited set of options. On top of that, a lot of tutorials I see are people simply starting one program from inside the other (for … [Read more…]
Thread and Multiprocessing Pools are an underused feature of Python. In my opinion, they are the easiest way to dip your feet into concurrency, and yet still the method I use most often. They allow you to easily offload CPU or I/O bound tasks to a pre-instantiated group (pool) of threads or processes. One of … [Read more…]
This month is my wife’s, mother’s and my own birthday, all within a span of nine days. What are the odds of that? No idea, I’m no statistician. However, as a developer, I thought it would be fun to prove (or disprove?) the Birthday Paradox with some Python coding. If you haven’t heard of … [Read more…]
Spice up your code with wrappers! In Python, a wrapper, also known as a decorator, is simply encapsulating a function within other functions.
| 1 2 3 4 5 6 7 | @wrapper def my_func(a, b=2): print(b) @meta_decorator(foo="bar") def my_other_func(**kwargs): print(kwargs) |
In Reusables, all the wrappers take arguments, aka meta decorators, so you will at minimum have to end them with parens ()s. Let’s take a look at the one I use … [Read more…]
As I sit here, anxious for the new AMD Vega 64 to be released, I decide to keep myself busy writing some Python code….designed to text me as soon as a new “rx vega 64” search term showed up on Amazon (I have the patience of a child on Christmas Eve, so sue me.) When … [Read more…]
Is Python more suited for EAFP or LBYL coding styles? It has been debated across message boards, email chains, stackoverflow, twitter and workplaces. It’s not as heated as some other battles; like how spaces are better than tabs, or that nano is indisputably the best terminal editor ; but people seem to have their own … [Read more…]
Boring Background I have always had in interest in making a local photo organization tool, that supports albums and tagging the way I want to do it. Maybe down the line allowing others to connect and use it too. So I started on one a few years ago, using what I knew best, Python REST … [Read more…]