Splice two lists
Ben Cartwright
bencvt at gmail.com
Sun May 7 01:05:08 EDT 2006
danmcleran at yahoo.com wrote:
> Thanks, this worked great.
Welcome. :-)
> Can you explain the syntax of the '*' on the
> return value of izip? I've only ever seen this syntax with respect to
> variable number of args.
When used in a function call (as opposed to a function definition), *
is the "unpacking" operator. Basically, it "flattens" an iterable into
arguments. The docs mention it...
http://www.python.org/doc/2.4.2/tut/node6.html#SECTION006740000000000000000
http://www.python.org/doc/faq/programming/#how-can-i-pass-optional-or-keyword-parameters-from-one-function-to-another
...but not in great detail. You can apply * to an arbitrary
expression, e.g.:
>>> def f3(a, b, c): pass
>>> f3(1, 2, 3)
>>> f3(*range(3))
>>> f3(*[1, 2, 3])
--Ben
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