new_contents: import random
  from plugin import CommandPlugin, PluginException
  
  
  class CoinFlip(CommandPlugin):
      """
      Flip a coin
      """
      max_coin_flips = 1000000
  
      def __init__(self):
          CommandPlugin.__init__(self)
          self.triggers = ['coin', 'coinflip']
          self.short_help = 'Flip a coin'
          self.help = 'Flip a coin or number of coins'
          self.help_example = ['!coin', '!coinflip 5']
  
      def on_command(self, bot, event, response):
          args = event['text']
  
          if not args:
              response['text'] = 'A coin is flipped and it is *_%s_*!' % random.choice(['Heads', 'Tails'])
          else:
              try:
                  tosses = int(args)
                  if tosses <= 0:
                      raise PluginException('Invalid argument! No coins to flip!')
  
                  # Avoid taking too long to generate coin flips
                  if tosses > CoinFlip.max_coin_flips:
                      raise PluginException(
                          'Invalid argument! Number of coins to flip is too large! Max flips is `%s`.' % CoinFlip.max_coin_flips)
  
                  rand_bits = bin(random.getrandbits(tosses))[2:]
                  heads = rand_bits.count('0')
                  tails = rand_bits.count('1')
                  response['text'] = '*_%s_* coins are flipped and the result is *_%s Heads_* and *_%s Tails_*!' % (
                      tosses, heads, tails)
              except ValueError:
                  raise PluginException('Invalid argument! Specify a *number* of coins to flip. E.g. `!coin 5`')
  
          response['mrkdwn_in'] = ['text']
          bot.sc.api_call('chat.postMessage', **response)
  
subject: Add CoinFlip plugin for some coin flipping fun