parameters: (self)
return_statement: return os.isatty(self.child_fd)
docstring: This returns True if the file descriptor is open and connected to a
          tty(-like) device, else False.
docstring_summary: This returns True if the file descriptor is open and connected to a
          tty(-like) device, else False.
docstring_tokens: This returns True if the file descriptor is open and connected to a tty ( - like ) device else False .
function: def isatty(self):   # File-like object.
          """This returns True if the file descriptor is open and connected to a
          tty(-like) device, else False. """
  
          return os.isatty(self.child_fd)
function_tokens: def isatty ( self ) : # File-like object. return os . isatty ( self . child_fd )