Author: Armin Rigo <[email protected]>
Branch:
Changeset: r49577:c665226786f8
Date: 2011-11-20 15:57 +0100
http://bitbucket.org/pypy/pypy/changeset/c665226786f8/
Log: Document slice assignment and deletion for RPython lists.
diff --git a/pypy/doc/coding-guide.rst b/pypy/doc/coding-guide.rst
--- a/pypy/doc/coding-guide.rst
+++ b/pypy/doc/coding-guide.rst
@@ -270,7 +270,12 @@
- *slicing*:
the slice start must be within bounds. The stop doesn't need to, but it
must
not be smaller than the start. All negative indexes are disallowed,
except for
- the [:-1] special case. No step.
+ the [:-1] special case. No step. Slice deletion follows the same rules.
+
+ - *slice assignment*:
+ only supports ``lst[x:y] = sublist``, if ``len(sublist) == y - x``.
+ In other words, slice assignment cannot change the total length of the
list,
+ but just replace items.
- *other operators*:
``+``, ``+=``, ``in``, ``*``, ``*=``, ``==``, ``!=`` work as expected.
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