old_contents: from collections import namedtuple
  
  Network = namedtuple('Network', [
      'network_name',
      'network_shortname',
      'pubkeyhash',
      'wif_prefix',
      'scripthash',
      'magicbytes'
  ])
  
  networks = (
      # Peercoin mainnet
      Network("Peercoin", "ppc", b'37', b'b7', b'75', b'e6e8e9e5'),
      # Peercoin testnet
      Network("Peercoin-testnet", "tppc", b'6f', b'ef', b'c4', b'cbf2c0ef')
      # Bitcoin mainnet
      Network("Bitcoin", "btc", b'00', b'80', b'05', b'd9b4bef9'),
      # Bitcoin testnet
      Network("Bitcoin-testnet", "tbtc", b'6f', b'ef', b'c4', b'dab5bffa')
  )
  
  def query(query):
      '''find matching parameter among the networks'''
  
      for network in networks:
          for field in network:
              if field == query:
                  return network
  
new_contents: from collections import namedtuple
  
  Network = namedtuple('Network', [
      'network_name',
      'network_shortname',
      'pubkeyhash',
      'wif_prefix',
      'scripthash',
      'magicbytes'
  ])
  
  networks = (
      # Peercoin mainnet
      Network("Peercoin", "ppc", b'37', b'b7', b'75', b'e6e8e9e5'),
      # Peercoin testnet
      Network("Peercoin-testnet", "tppc", b'6f', b'ef', b'c4', b'cbf2c0ef'),
      # Bitcoin mainnet
      Network("Bitcoin", "btc", b'00', b'80', b'05', b'd9b4bef9'),
      # Bitcoin testnet
      Network("Bitcoin-testnet", "tbtc", b'6f', b'ef', b'c4', b'dab5bffa')
  )
  
  def query(query):
      '''find matching parameter among the networks'''
  
      for network in networks:
          for field in network:
              if field == query:
                  return network
  
subject: fix mising comma