[Python-Dev] accumulator display syntax

[Greg Ewing]

Sean Ross <seandavidross at hotmail.com>:

> # (1) without parentheses:
> B(y) for y in A(x) for x in myIterable

Er, excuse me, but that had better *not* be equivalent to

> # (2) for clarity, we'll add some optional parentheses:
> B(y) for y in (A(x) for x in myIterable)

because the former ought to be a single iterator expression
with two nested loops (albeit an erroneous one, since x
is being used before it's bound).

Greg Ewing, Computer Science Dept, +--------------------------------------+
University of Canterbury,	   | A citizen of NewZealandCorp, a	  |
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