code: def seek(self, offset, whence=SEEK_SET):
          
  
          if whence == SEEK_SET:
              self.__sf.seek(offset)
          elif whence == SEEK_CUR:
              self.__sf.seek(self.tell() + offset)
          elif whence == SEEK_END:
              self.__sf.seek(self.__sf.filesize - offset)
docs: Reposition the file pointer.