(self, pos, whence=_SEEK_SET)
Set the current position of this file.

        :Parameters:
         - `pos`: the position (or offset if using relative
           positioning) to seek to
         - `whence` (optional): where to seek
           from. :attr:`os.SEEK_SET` (``0``) for absolute file
           positioning, :attr:`os.SEEK_CUR` (``1``) to seek relative
           to the current position, :attr:`os.SEEK_END` (``2``) to
           seek relative to the file's end.
Set the current position of this file.
Set the current position of this file .
def seek(self, pos, whence=_SEEK_SET):
        """Set the current position of this file.

        :Parameters:
         - `pos`: the position (or offset if using relative
           positioning) to seek to
         - `whence` (optional): where to seek
           from. :attr:`os.SEEK_SET` (``0``) for absolute file
           positioning, :attr:`os.SEEK_CUR` (``1``) to seek relative
           to the current position, :attr:`os.SEEK_END` (``2``) to
           seek relative to the file's end.
        """
        if whence == _SEEK_SET:
            new_pos = pos
        elif whence == _SEEK_CUR:
            new_pos = self.__position + pos
        elif whence == _SEEK_END:
            new_pos = int(self.length) + pos
        else:
            raise IOError(22, "Invalid value for `whence`")

        if new_pos < 0:
            raise IOError(22, "Invalid value for `pos` - must be positive")

        self.__position = new_pos
        self.__buffer = EMPTY
def seek ( self , pos , whence = _SEEK_SET ) : if whence == _SEEK_SET : new_pos = pos elif whence == _SEEK_CUR : new_pos = self . __position + pos elif whence == _SEEK_END : new_pos = int ( self . length ) + pos else : raise IOError ( 22 , "Invalid value for `whence`" ) if new_pos < 0 : raise IOError ( 22 , "Invalid value for `pos` - must be positive" ) self . __position = new_pos self . __buffer = EMPTY