parameters: (url_host,port)
return_statement: return try_connect(url_host, port, False, _retdict('ECONNREFUSED', True))
docstring: Predicate for determining if a port is available. Returns False if connection to
      url_host,port succeeds, and True if it throws connection refused.
docstring_summary: Predicate for determining if a port is available. Returns False if connection to
      url_host,port succeeds, and True if it throws connection refused.
docstring_tokens: Predicate for determining if a port is available . Returns False if connection to url_host port succeeds and True if it throws connection refused .
function: def is_port_available(url_host,port):
      """Predicate for determining if a port is available. Returns False if connection to
      url_host,port succeeds, and True if it throws connection refused."""
      
      return try_connect(url_host, port, False, _retdict('ECONNREFUSED', True))
function_tokens: def is_port_available ( url_host , port ) : return try_connect ( url_host , port , False , _retdict ( 'ECONNREFUSED' , True ) )