Ben Lewis johnbenjaminlewis

Getting Docker

Docker is available for Linux, MacOS, and Windows.

Docker for Mac is best installed with Homebrew and Homebrew Cask. For other ways to install on MacOS, see Install Docker for Mac in Docker's docs.

brew cask install docker # Install Docker

	import datetime
	from typing import Union


	def get_start_of_week(dt: Union[datetime.datetime, datetime.date], weeks_from_now: int = 0) -> datetime.datetime:
	""" Given a `datetime.date` or `datetime.datetime` instance, return
	a `datetime.datetime` instance corresponding to the first day
	(i.e., Sunday) of that week.

	This function makes it really easy to calculate days-of-the-week from now.

	#!/bin/bash
	set -e

	DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

	GCLOUD_ORG_ID=""
	GCLOUD_BILLING_ACCOUNT_ID=""

	# These variables should be edited for project id uniqueness
	RANDOM_STR="kasdfj" # for entropy

	import functools
	import itertools
	import logging
	import time


	log = logging.getLogger(__name__)


	def retry(times, timeout=0.2, exceptions=None):

	"""Python 3 has a ContextDecorator class mixin that allows context
	managers to be used as decorators also. Even better, the decorator
	has optional arguments.

	If python2, $ pip install contextlib2

	"""
	from __future__ import absolute_import

	import functools

	#!/usr/bin/env python
	""" Run multiple flask apps in the same process, hosted at different domain names.

	I choose a domain alias for my app, say `myapp.com` then add to my hosts file. Then
	my hosts file will have these entries::

	127.0.0.1 myapp.com www.myapp.com admin.myapp.com

	You can use a `defaultdict` with `redirect_create_app` to redirect all requested hostnames
	not in `SubdomainDispatcher.registry` to a default location. As an example, after starting the server

	class SentinelInt(int):
	"""Makes unique sentinel values that look like integers but equality
	is overridden.

	>>> SentinelInt(0) == SentinelInt(0)
	False
	>>> s = SentinelInt(0)
	>>> s == s
	True
	"""

	""" We have discovered some test packages weren't autodiscovered
	because they didn't have an __init__.py file. This module walks through
	the directory tree to ensure that each directory with a Python file also
	has __init__.py.

	TODO: add directory exclusion handling.

	Cool. Now walk it out
	"""
	from functools import wraps

	from contextlib import contextmanager
	import sys


	@contextmanager
	def transform_exception(new_exception, new_message=None, exceptions=None):
	"""Ok, this is hacky. Takes any exception listed in `exceptions`,
	reraises as `new_exception` type but preserves the old stack trace.

	This is useful if you are writing a library and want to transform a