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Fix compress() recipe in docs to use itertools.

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Raymond Hettinger 2008-07-19 23:21:57 +00:00
parent d648f64a53
commit 39e0eb766f
2 changed files with 6 additions and 6 deletions
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6
Doc/library/itertools.rst
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@ -698,9 +698,9 @@ which incur interpreter overhead.
def compress(data, selectors): def compress(data, selectors):
"compress('abcdef', [1,0,1,0,1,1]) --> a c e f" "compress('abcdef', [1,0,1,0,1,1]) --> a c e f"
for d, s in izip(data, selectors): decorated = izip(data, selectors)
if s: filtered = ifilter(operator.itemgetter(1), decorated)
yield d return imap(operator.itemgetter(0), filtered)
def combinations_with_replacement(iterable, r): def combinations_with_replacement(iterable, r):
"combinations_with_replacement('ABC', 3) --> AA AB AC BB BC CC" "combinations_with_replacement('ABC', 3) --> AA AB AC BB BC CC"

6
Lib/test/test_itertools.py
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@ -1281,9 +1281,9 @@ Samuele
>>> def compress(data, selectors): >>> def compress(data, selectors):
... "compress('abcdef', [1,0,1,0,1,1]) --> a c e f" ... "compress('abcdef', [1,0,1,0,1,1]) --> a c e f"
... for d, s in izip(data, selectors): ... decorated = izip(data, selectors)
... if s: ... filtered = ifilter(operator.itemgetter(1), decorated)
... yield d ... return imap(operator.itemgetter(0), filtered)
>>> def combinations_with_replacement(iterable, r): >>> def combinations_with_replacement(iterable, r):
... "combinations_with_replacement('ABC', 3) --> AA AB AC BB BC CC" ... "combinations_with_replacement('ABC', 3) --> AA AB AC BB BC CC"