On Fri, Oct 17, 2003 at 11:55:53AM -0600, Shane Holloway (IEEE) wrote:
mygenerator = x for x in S for y in x for x in S: print y return x for x in S
Interesting but potentially confusing: we could expect the last one to mean that we executing 'return' repeatedly, i.e. returning a value more than once, which is not what occurs. Similarily,
yield x for x in g()
in a generator would be quite close to the syntax discussed some time ago to yield all the values yielded by a sub-generator g, but in your proposal it wouldn't have that meaning: it would only yield a single object, which happens to be an iterator with the same elements as g().
Even with parenthesis, and assuming a syntax to yield from a sub-generator for performance reason, the two syntaxes would be dangerously close:
yield x for x in g() # means for x in g(): yield x yield (x for x in g()) # means yield g()