[Python-ideas] Alternative name for yield-from
greg.ewing at canterbury.ac.nz
Wed Feb 18 21:22:24 CET 2009
I've had another idea about what to call yield-from:
y = pass g(x)
which means "run this generator, passing through
any sent/yielded values etc." It's short, it's
suggestive, it doesn't use any new keywords, and
there's no danger of confusing it with 'yield'.
Now, you're probably reaching for the -1 button
at this point, thinking "WTF? That's completely
different from the existing meaning of pass!"
But there's a sense in which the existing 'pass'
can be seen as a degenerate case. Consider the
Since it never yields anything, doing
is effectively a no-op. Thus, 'pass' with no
generator at all is a no-op as well.
There's still one remaining difference -- the
presence of 'pass' with a value would make the
containing function into a generator, whereas
plain 'pass' wouldn't. We'd just have to live
with that inconsistency.
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