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Overivew

Setting up a linter can help detect odd or non-typical coding practices. The following will describe how to setup PyCharm for basic linting with the PyCharm PyLint plugin.

This assumes you have a venv setup within your current project.

Install Pylint

For pylint for your current project venv the following two commands should be run in your project root. The first will install pylint and the second will create an rc file which you can then adjust for your current project.

You might want to read this to get an introduction to armel vs armhf.

If the below is too much, you can try Ubuntu-ARMv7-Qemu but note it contains non-free blobs.

Running ARM programs under linux (without starting QEMU VM!)

First, cross-compile user programs with GCC-ARM toolchain. Then install qemu-arm-static so that you can run ARM executables directly on linux

If there's no qemu-arm-static in the package list, install qemu-user-static instead

Replace your Swarm Manager and Workers with updated versions of docker

it's best to replace nodes, don't do apt/yum upgrades.
both would work, but VM replacment forces me to think of it as immutable and prevents making pets
if you don't want to update join scripts for manager IP's, then do something like Elastic IP's so manager IP's won't change.

Lets assume you have 3 managers and 3 workers on 17.06 and you want to update to 17.12

managers: m1, m2, m3

	#!/bin/sh

	# cite
	# https://stackoverflow.com/a/40866205

	# USAGE:
	# download-aws.sh <bucket> <region> <source-file> <dest-file>

	set -e

	#!/usr/bin/env python3
	# Reproduce Bitcoin ABC's deterministic Schnorr signature near end of key_tests.cpp

	from ecdsa.numbertheory import jacobi
	from ecdsa import SECP256k1
	import hashlib
	import hmac

	G = SECP256k1.generator
	p = SECP256k1.curve.p()

	#!/bin/sh
	# Inspired by https://gist.github.com/daktak/f887352d564b54f9e529404cc0eb60d5
	# Inspired by https://gist.github.com/jpouellet/d8cd0eb8589a5b9bf0c53a28fc530369

	ip() { qvm-prefs -g -- "$1" ip; }
	netvm() { qvm-prefs -g -- "$1" netvm; }

	forward() {
	local from_domain=$1
	local to_domain=$2

	sudo dnf install gcc-c++ libtool make autoconf automake openssl-devel libevent-devel boost-devel libdb4-devel libdb4-cxx-devel python3
	git clone https://github.com/bitcoin/bitcoin.git
	cd bitcoin/
	./autogen.sh
	./configure #--without-gui
	make

	cmake_minimum_required(VERSION 3.3)
	project(bitcoin)

	set(CMAKE_CXX_STANDARD 11)
	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

	add_custom_target(build-bitcoin ALL
	COMMAND ./autogen.sh
	COMMAND ./configure
	COMMAND $(MAKE) WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}

	import functools


	def force_async(fn):
	'''
	turns a sync function to async function using threads
	'''
	from concurrent.futures import ThreadPoolExecutor
	import asyncio
	pool = ThreadPoolExecutor()

	$ wget -q http://stable.release.core-os.net/amd64-usr/1068.8.0/coreos_production_ami_image.bin.bz2
	$ ec2-bundle-and-upload-image -image coreos_production_ami_image.bin.bz2 -s3-bucket totally-not-official-ami -s3-prefix ec2-bundle-and-upload-image/ -name "CoreOS-stable-1068.8.0"
	2016/07/28 12:08:19 Using "-region us-east-1" to match S3 bucket
	2016/07/28 12:08:19 Using "-account 123456789012" based on active credentials
	2016/07/28 12:08:19 Determining size of compressed image...
	2016/07/28 12:09:18 Compressed image is 4756340736 bytes
	2016/07/28 12:09:18 Writing to s3://totally-not-official-ami/ec2-bundle-and-upload-image/CoreOS-stable-1068.8.0.part.0
	2016/07/28 12:09:23 Writing to s3://totally-not-official-ami/ec2-bundle-and-upload-image/CoreOS-stable-1068.8.0.part.1
	2016/07/28 12:09:28 Writing to s3://totally-not-official-ami/ec2-bundle-and-upload-image/CoreOS-stable-1068.8.0.part.2
	2016/07/28 12:09:31 Writing to s3://totally-not-official-ami/ec2-bundle-and-upload-image/CoreOS-stable-1068.8.0.part.3