From: Guido van Rossum <guido@python.org>
Date: Mon, 20 Oct 2003 17:01:07 +0000 (+0000)
Subject: Use 'predicate = bool' as the default predicate for ifilter[false].
X-Git-Tag: v2.4a1~1409
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=0c9a318d644c3a5ef0d611cc5a35a5cbd7e7b929;p=python

Use 'predicate = bool' as the default predicate for ifilter[false].
---

diff --git a/Doc/lib/libitertools.tex b/Doc/lib/libitertools.tex
index 30d80c183f..aec55cb4e9 100644
--- a/Doc/lib/libitertools.tex
+++ b/Doc/lib/libitertools.tex
@@ -140,8 +140,7 @@ by functions or loops that truncate the stream.
   \begin{verbatim}
      def ifilter(predicate, iterable):
          if predicate is None:
-             def predicate(x):
-                 return x
+             predicate = bool
          for x in iterable:
              if predicate(x):
                  yield x
@@ -157,8 +156,7 @@ by functions or loops that truncate the stream.
   \begin{verbatim}
      def ifilterfalse(predicate, iterable):
          if predicate is None:
-             def predicate(x):
-                 return x
+             predicate = bool
          for x in iterable:
              if not predicate(x):
                  yield x