def update_hdu_list(self, rebuild=True):
        """
        Force an update of the entire HDU list

        Normally you don't need to call this method directly

        if rebuild is false or the hdu_list is not yet set, the list is
        rebuilt from scratch
        """
        if not hasattr(self, 'hdu_list'):
            rebuild = True

        if rebuild:
            self.hdu_list = []
            self.hdu_map = {}

            # we don't know how many hdus there are, so iterate
            # until we can't open any more
            ext_start = 0
        else:
            # start from last
            ext_start = len(self)

        ext = ext_start
        while True:
            try:
                self._append_hdu_info(ext)
            except IOError:
                break
            except RuntimeError:
                break

            ext = ext + 1
def update_hdu_list ( self , rebuild = True ) : if not hasattr ( self , 'hdu_list' ) : rebuild = True if rebuild : self . hdu_list = [ ] self . hdu_map = { } ext_start = 0 else : ext_start = len ( self ) ext = ext_start while True : try : self . _append_hdu_info ( ext ) except IOError : break except RuntimeError : break ext = ext + 1
Force an update of the entire HDU list

        Normally you don't need to call this method directly

        if rebuild is false or the hdu_list is not yet set, the list is
        rebuilt from scratch