Erik Max Francis wrote:
> > For enrichment purposes, is there a way to do this sort of thing with
> > a generator? E.g. something like:
> >
> > def SentenceGenerator():
> > words = ['I', 'have', 'been', 'to', 'the', 'fair']
> > for w in words:
> > yield w
> >
> > message = "%s %s %s %s"
> >
> > print message % SentenceGenerator()
> >
> > (I ask because the above doesn't work)?
>
> Use tuple(SentenceGenerator()). A generator is just another object, so
> using it with the % operator tries to substitute it at one value. (Even
> with this fix, though, your message didn't have enough formatters.)
I know that the message didn't have enough formatters, that's why I
asked. (Although I would have assumed that the generator would get
automatically converted to a sequence that was consumable by the
interpolation operator...)
When using a generator via .next(), there's no requirement that it is
used until it is exhausted. E.g.
def NewId():
v = 0
while 1:
yield v
v += 1
NextId = NewId().next
BUTTON_OK = NextId()
BUTTON_CANCEL = NextId()
BUTTON_YAY = NextId()
Hence my question being "something like" rather than "something
equivalent to". Alas, little did I know that the answer I was looking
for was not even up the same path.
-tom!
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