From: Andrew M. Kuchling <amk@amk.ca>
Date: Sat, 7 Aug 2004 19:16:32 +0000 (+0000)
Subject: [Bug #827209] Add footnote from Alex M. about listcomps leaking their index variables
X-Git-Tag: v2.4a3~354
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=cbd81556bb975b72697d2989eccfbc9f3e39b3de;p=thirdparty%2FPython%2Fcpython.git

[Bug #827209] Add footnote from Alex M. about listcomps leaking their index variables
---

diff --git a/Doc/ref/ref5.tex b/Doc/ref/ref5.tex
index 27127adc867c..093192026cdd 100644
--- a/Doc/ref/ref5.tex
+++ b/Doc/ref/ref5.tex
@@ -184,7 +184,11 @@ case, the elements of the new list are those that would be produced
 by considering each of the \keyword{for} or \keyword{if} clauses a block,
 nesting from
 left to right, and evaluating the expression to produce a list element
-each time the innermost block is reached.
+each time the innermost block is reached\footnote{In Python 2.3, a
+list comprehension "leaks" the control variables of each
+\samp{for} it contains into the containing scope.  However, this
+behavior is deprecated, and relying on it will not work once this
+bug is fixed in a future release}.
 \obindex{list}
 \indexii{empty}{list}