old_contents: #DEFAULT_URL = u"https://api.gem.co"
  #DEFAULT_NETWORK = u'bitcoin'
  
  DEFAULT_URL = "http://localhost:8999"
  DEFAULT_URL = "https://api-sandbox.gem.co"
  #DEFAULT_NETWORK = u'testnet'
  
  SUPPORTED_NETWORKS = [u'testnet', u'bitcoin']
  NETWORK_MAP = {u'testnet': u'testnet',
                 u'testnet3': u'testnet',
                 u'bitcoin_testnet': u'testnet',
                 u'mainnet': u'mainnet',
                 u'bitcoin': u'mainnet',
                 u'bitcoin_mainnet': u'mainnet'}
  GEM_NETWORK = {u'mainnet': u'bitcoin',
                 u'bitcoin': u'bitcoin',
                 u'bitcoin_mainnet': u'bitcoin',
                 u'testnet': u'bitcoin_testnet',
                 u'testnet3': u'bitcoin_testnet',
                 u'bitcoin_testnet': u'bitcoin_testnet'}
  
new_contents: #DEFAULT_URL = u"https://api.gem.co"
  #DEFAULT_NETWORK = u'bitcoin'
  
  #DEFAULT_URL = "http://localhost:8999"
  DEFAULT_URL = "https://api-sandbox.gem.co"
  DEFAULT_NETWORK = u'testnet'
  
  SUPPORTED_NETWORKS = [u'testnet', u'bitcoin']
  NETWORK_MAP = {u'testnet': u'testnet',
                 u'testnet3': u'testnet',
                 u'bitcoin_testnet': u'testnet',
                 u'mainnet': u'mainnet',
                 u'bitcoin': u'mainnet',
                 u'bitcoin_mainnet': u'mainnet'}
  GEM_NETWORK = {u'mainnet': u'bitcoin',
                 u'bitcoin': u'bitcoin',
                 u'bitcoin_mainnet': u'bitcoin',
                 u'testnet': u'bitcoin_testnet',
                 u'testnet3': u'bitcoin_testnet',
                 u'bitcoin_testnet': u'bitcoin_testnet'}
  
subject: Update config.py