Merged revisions 68319 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r68319 | antoine.pitrou | 2009-01-04 22:29:23 +0100 (dim., 04 janv. 2009) | 3 lines

  Issue #4272: Add an optional argument to the GzipFile constructor to override the timestamp in the gzip stream.
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1 files changed, 10 insertions, 1 deletions

diff --git a/Doc/library/gzip.rst b/Doc/library/gzip.rst
index c6f9ef8..fa73bba 100644
--- a/Doc/library/gzip.rst
+++ b/Doc/library/gzip.rst
@@ -24,7 +24,7 @@ For other archive formats, see the :mod:`bz2`, :mod:`zipfile`, and
 The module defines the following items:
 
 
-.. class:: GzipFile([filename[, mode[, compresslevel[, fileobj]]]])
+.. class:: GzipFile([filename[, mode[, compresslevel[, fileobj[, mtime]]]]])
 
    Constructor for the :class:`GzipFile` class, which simulates most of the methods
    of a file object, with the exception of the :meth:`readinto` and
@@ -52,6 +52,15 @@ The module defines the following items:
    level of compression; ``1`` is fastest and produces the least compression, and
    ``9`` is slowest and produces the most compression.  The default is ``9``.
 
+   The *mtime* argument is an optional numeric timestamp to be written to
+   the stream when compressing.  All :program:`gzip`compressed streams are
+   required to contain a timestamp.  If omitted or ``None``, the current
+   time is used.  This module ignores the timestamp when decompressing;
+   however, some programs, such as :program:`gunzip`\ , make use of it.
+   The format of the timestamp is the same as that of the return value of
+   ``time.time()`` and of the ``st_mtime`` member of the object returned
+   by ``os.stat()``.
+
    Calling a :class:`GzipFile` object's :meth:`close` method does not close
    *fileobj*, since you might wish to append more material after the compressed
    data.  This also allows you to pass a :class:`StringIO` object opened for