For several months Python mysql-connector has been broken when attempting a install from pip. In truth I’ve only tried Python 3, CentOS 6/7 and Fedora 21; in fact, this could be a more wide spread. The simple solution is to install an earlier version. The purpose of this post is to be a quick reminder of which is the most recent working version!
Python’s Fabric module is an easy and efficient way for task based automation. I use it to automate the installation of VoIP phone systems on CentOS 6/7. In a nut shell, Fabric executes shell commands over SSH. It also can be used to automate local tasks. The purpose of this article is to highlight the basic process of capturing Fabric exceptions(try/except) using a wrapper function called a decorator. A few well placed decorators can save lot of time coding the same thing over and over(like capturing a specific error).
Most of you in the know about Python/Fabric probably will find my examples trivial, but I had to dig to find the Fabric exception environment variable. I’m sure it’s somewhere on the Fabric site… but I gave up after 30 minutes. So hopefully you will find this post useful either way!
If you need help installing Python3, pip3 and Fabric please refer to my previous post.
Goals of this Post:
Lets start with a basic fabfile.py:
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#!/bin/python3 from fabric.api import * from fabric.contrib import files # Local git management automation tools # copyright Matt Birkland, Savelono.com 2017 # License: GPLv2 # # # Set the username env.user = "matt" # Set the password [NOT RECOMMENDED] env.password = "" env.hosts = "" def test_func(): local("mkdir ~matt/git/savelono-projects/exception_wrapper/somedir") |