parameters: (self, size=-1)
docstring: Read up to size bytes with at most one read() system call,
          where size is an int.
docstring_summary: Read up to size bytes with at most one read() system call,
          where size is an int.
docstring_tokens: Read up to size bytes with at most one read () system call where size is an int .
function: def read1(self, size=-1):
          """Read up to size bytes with at most one read() system call,
          where size is an int.
          """
          self._unsupported("read1")
function_tokens: def read1 ( self , size = - 1 ) : self . _unsupported ( "read1" )