[Python-ideas] Yield-from example: A parser

[Bruce Frederiksen]

Antoine Pitrou wrote:
> How about:
>
>    def scanner(text):
>      for m in pat.finditer(text):
>        token = m.group(0)
>        print "Feeding:", repr(token)
>        yield token
>      yield None # to signal EOF
>
> and:
>
>    def parse_items(closing_tag = None):
>      elems = []
>      while 1:
>        token = token_stream.next()
>        if not token:
>          break # EOF
>        [etc.]
>   
Or just:

def scanner(text):
    for m in pat.finditer(text):
        token = m.group(0)
        print "Feeding:", repr(token)
        yield token

and:

def parse_items(closing_tag = None):
    elems = []
    for token in token_stream:
        [etc.]


-bruce frederiksen