code: def read_very_eager(self):
          
          self.process_rawq()
          while not self.eof and self.sock_avail():
              self.fill_rawq()
              self.process_rawq()
          return self.read_very_lazy()
docs: Read everything that's possible without blocking in I/O (eager).
  
          Raise EOFError if connection closed and no cooked data
          available.  Return '' if no cooked data available otherwise.
          Don't block unless in the midst of an IAC sequence.