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Reference: xmlsec/python-xmlsec#254 (comment)

1. Remove the official formula

brew uninstall libxmlsec1

2. Download the last known good formula and shove it into /tmp

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URL_PATTERN = (
    r'(?i)('
    r'(?:(?:(?:https?|ftp):)?//)'
    r'(?:\S+(?::\S*)?@)?'
    r'(?:'
    r'(?!(?:10|127)(?:\.\d{1,3}){3})'
    r'(?!(?:169\.254|192\.168)(?:\.\d{1,3}){2})'
    r'(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})'
    r'(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])'
    r'(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}'

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Add this to your instance user data. You need to stop the instance before set this.

Content-Type: multipart/mixed; boundary="//"
MIME-Version: 1.0

--//
Content-Type: text/cloud-config; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit

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Install Python 3.7 on Ubuntu

sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt-get update
sudo apt-get install -y virtualenv python3.7 python3.7-dev

Python - MySQL Connector

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mongodump

Dump a single collection

mongodump -h "mongodb0.example.com:27017" -d dbname -u user -p password -c collectionname -o path-to-output

Make a backup (dump all collections)

mongodump -h "mongodb0.example.com:27017" -d dbname -u user -p password -o path-to-backup

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Source: https://www.toptal.com/python/tips-and-practices

This resource contains a collection of Python best practices and Python tips provided by our Toptal network members. As such, this page will be updated on a regular basis to include additional information and cover emerging Python techniques. This is a community driven project, so you are encouraged to contribute as well, and we are counting on your feedback.

Python is a high level language used in many development areas, like web development (Django, Flask), data analysis (SciPy, scikit-learn), desktop UI (wxWidgets, PyQt) and system administration (Ansible, OpenStack). The main advantage of Python is development speed. Python comes with rich standard library, a lot of 3rd party libraries and clean syntax. All this allows a developer to focus on the problem they want to solve, and not on the language details or reinventing the wheel.

Check out the Toptal resource pages for additional information on Python. There is a Python hiring guide, Python job

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Kubernetes Cheetsheets

Get authorized for a new cluster

1. List all available clusters

gcloud --project=<project-name> container clusters list

2. Get credentials for a cluster in the list

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tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

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Postgres Cheat Sheet

List all tables

\dt

List tables together with their sizes:

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Copy a partition

bq cp -f [PROJECT]:[DATASET].[SOURCE_TABLE]\$[SOURCE_PARTITION] [PROJECT]:[DATASET].[DESTINATION_TABLE]\$[DESTINATION_PARTITION]