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authorRaymond Hettinger <python@rcn.com>2004-09-23 07:27:39 (GMT)
committerRaymond Hettinger <python@rcn.com>2004-09-23 07:27:39 (GMT)
commit4533f1fb7fbf1fa8a9cb264ff6f1f0aba043e80d (patch)
treed3a1460e3d46dc7ea42c6c0069a2d963949a4cff /Doc/lib
parent513c8bd6f2523f5c6bf7e99996d65691c5e36013 (diff)
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Improve three recipes in the itertools docs.
Diffstat (limited to 'Doc/lib')
-rw-r--r--Doc/lib/libitertools.tex14
1 files changed, 10 insertions, 4 deletions
diff --git a/Doc/lib/libitertools.tex b/Doc/lib/libitertools.tex
index df73561..be53015 100644
--- a/Doc/lib/libitertools.tex
+++ b/Doc/lib/libitertools.tex
@@ -458,15 +458,21 @@ def nth(iterable, n):
def all(seq, pred=bool):
"Returns True if pred(x) is True for every element in the iterable"
- return False not in imap(pred, seq)
+ for elem in ifilterfalse(pred, seq):
+ return False
+ return True
def any(seq, pred=bool):
- "Returns True if pred(x) is True at least one element in the iterable"
- return True in imap(pred, seq)
+ "Returns True if pred(x) is True for at least one element in the iterable"
+ for elem in ifilter(pred, seq):
+ return True
+ return False
def no(seq, pred=bool):
"Returns True if pred(x) is False for every element in the iterable"
- return True not in imap(pred, seq)
+ for elem in ifilter(pred, seq):
+ return False
+ return True
def quantify(seq, pred=bool):
"Count how many times the predicate is True in the sequence"