old_contents: setupdict= {
      'name': 'txAMQP',
      'version': '0.4',
      'author': 'Esteve Fernandez',
      'author_email': 'esteve@fluidinfo.com',
      'url': 'https://launchpad.net/txamqp',
      }
  
  try:
      from setuptools import setup, find_packages
  except ImportError:
      from distutils.core import setup
      setupdict['packages'] = ['txamqp', 'txamqp.contrib', 'txamqp.contrib.thrift']
      setupdict['package_dir'] = {
          'txamqp': 'src/txamqp',
          'txamqp.contrib': 'src/txamqp/contrib',
          'txamqp.contrib.thrift': 'src/txamqp/contrib/thrift',
      }
  else:
      setupdict['packages'] = find_packages('src')
      setupdict['package_dir'] = { '': 'src' }
      setupdict['install_requires'] = ['Twisted']
          
  setup(**setupdict)
  
new_contents: setupdict= {
      'name': 'txAMQP',
      'version': '0.5a',
      'author': 'Esteve Fernandez',
      'author_email': 'esteve@fluidinfo.com',
      'url': 'https://launchpad.net/txamqp',
      }
  
  try:
      from setuptools import setup, find_packages
  except ImportError:
      from distutils.core import setup
      setupdict['packages'] = ['txamqp', 'txamqp.contrib', 'txamqp.contrib.thrift']
      setupdict['package_dir'] = {
          'txamqp': 'src/txamqp',
          'txamqp.contrib': 'src/txamqp/contrib',
          'txamqp.contrib.thrift': 'src/txamqp/contrib/thrift',
      }
  else:
      setupdict['packages'] = find_packages('src')
      setupdict['package_dir'] = { '': 'src' }
      setupdict['install_requires'] = ['Twisted']
          
  setup(**setupdict)
  
subject: Bump version number to make it clear this is not txamqp 0.4.