old_contents: #! /usr/bin/env python
  # -*- coding: utf-8 -*-
  # Copyright (c) 2017 James Wen
  
  KEYS_DIR_NAME = './keys'
  PRIVATE_KEY_FILE = '{}/opsimulate'.format(KEYS_DIR_NAME)
  PUBLIC_KEY_FILE = '{}/opsimulate.pub'.format(KEYS_DIR_NAME)
  
  SERVICE_ACCOUNT_FILE = 'service-account.json'
  
  ZONE = 'us-east4-a'
  MACHINE_TYPE = 'n1-standard-1'
  UBUNTU_VERSION = 'ubuntu-1404-lts'
  INSTANCE_NAME = 'opsimulate-gitlab'
  VM_USERNAME = 'opsimulate'
  
new_contents: #! /usr/bin/env python
  # -*- coding: utf-8 -*-
  # Copyright (c) 2017 James Wen
  
  import os
  
  HOME = os.path.expanduser("~")
  OPSIMULATE_HOME = os.path.join(HOME, '.opsimulate')
  
  KEYS_DIR_NAME = os.path.join(OPSIMULATE_HOME, 'keys')
  PRIVATE_KEY_FILE = os.path.join(KEYS_DIR_NAME, 'opsimulate')
  PUBLIC_KEY_FILE = os.path.join(KEYS_DIR_NAME, 'opsimulate.pub')
  
  SERVICE_ACCOUNT_FILE = os.path.join(OPSIMULATE_HOME, 'service-account.json')
  
  ZONE = 'us-east4-a'
  MACHINE_TYPE = 'n1-standard-1'
  UBUNTU_VERSION = 'ubuntu-1404-lts'
  INSTANCE_NAME = 'opsimulate-gitlab'
  VM_USERNAME = 'opsimulate'
  
subject: Install keys and service-account.json in ~/.opsimulate directory