Chris Angelico <ros...@gmail.com> writes: > You can't do a look-ahead with a vanilla string iterator. That's > necessary for a lot of parsers.
For JSON? For other parsers you usually have a tokenizer that reads characters with maybe 1 char of lookahead. > Yes, which gives a two-level indexing (first find the strand, then the > character), and that's going to play pretty badly with CPU caches. If you're jumping around at random all over the string, you probably really want a bytearray rather than a unicode string. If you're scanning sequentually you won't have to look at the outer table very often. -- https://mail.python.org/mailman/listinfo/python-list
