NNTPContent.py 文件源码

def __len__(self):
        """
        Returns the length of the content
        """
        if not self.filepath:
            # If there is no filepath, then we're probably dealing with a
            # stream in memory like a StringIO or BytesIO stream.
            if self.stream:
                # Advance to the end of the file
                ptr = self.stream.tell()
                # Advance to the end of the file and get our length
                length = self.stream.seek(0L, SEEK_END)
                if length != ptr:
                    # Return our pointer
                    self.stream.seek(ptr, SEEK_SET)
            else:
                # No Stream or Filepath; nothing has been initialized
                # yet at all so just return 0
                length = 0
        else:
            if self.stream and self._dirty is True:
                self.stream.flush()
                self._dirty = False

            # Get the size
            length = getsize(self.filepath)

        return length