(self)
return bytes(result)
Read all data from the file, returned as bytes.

        In non-blocking mode, returns as much as is immediately available,
        or None if no data is available.  Return an empty bytes object at EOF.
Read all data from the file, returned as bytes.
Read all data from the file returned as bytes .
def readall(self):
        """Read all data from the file, returned as bytes.

        In non-blocking mode, returns as much as is immediately available,
        or None if no data is available.  Return an empty bytes object at EOF.
        """
        self._checkClosed()
        self._checkReadable()
        bufsize = DEFAULT_BUFFER_SIZE
        try:
            pos = os.lseek(self._fd, 0, SEEK_CUR)
            end = os.fstat(self._fd).st_size
            if end >= pos:
                bufsize = end - pos + 1
        except OSError:
            pass

        result = bytearray()
        while True:
            if len(result) >= bufsize:
                bufsize = len(result)
                bufsize += max(bufsize, DEFAULT_BUFFER_SIZE)
            n = bufsize - len(result)
            try:
                chunk = os.read(self._fd, n)
            except BlockingIOError:
                if result:
                    break
                return None
            if not chunk: # reached the end of the file
                break
            result += chunk

        return bytes(result)
def readall ( self ) : self . _checkClosed ( ) self . _checkReadable ( ) bufsize = DEFAULT_BUFFER_SIZE try : pos = os . lseek ( self . _fd , 0 , SEEK_CUR ) end = os . fstat ( self . _fd ) . st_size if end >= pos : bufsize = end - pos + 1 except OSError : pass result = bytearray ( ) while True : if len ( result ) >= bufsize : bufsize = len ( result ) bufsize += max ( bufsize , DEFAULT_BUFFER_SIZE ) n = bufsize - len ( result ) try : chunk = os . read ( self . _fd , n ) except BlockingIOError : if result : break return None if not chunk : # reached the end of the file break result += chunk return bytes ( result )