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Issue #15677: Document that zlib and gzip accept a compression level of 0 to mean 'no compression'.

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Patch by Brian Brazil.
This commit is contained in:
Nadeem Vawda 2012-11-11 14:14:47 +01:00
commit 6ff262e18f
5 changed files with 20 additions and 14 deletions
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Doc/library/gzip.rst
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@ -38,7 +38,7 @@ The module defines the following items:
``'w'``, or ``'wb'`` for binary mode, or ``'rt'``, ``'at'``, or ``'wt'`` for
text mode. The default is ``'rb'``.
The *compresslevel* argument is an integer from 1 to 9, as for the
The *compresslevel* argument is an integer from 0 to 9, as for the
:class:`GzipFile` constructor.
For binary mode, this function is equivalent to the :class:`GzipFile`
@ -80,9 +80,10 @@ The module defines the following items:
in text mode, use :func:`.open` (or wrap your :class:`GzipFile` with an
:class:`io.TextIOWrapper`).
The *compresslevel* argument is an integer from ``1`` to ``9`` controlling the
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 *compresslevel* argument is an integer from ``0`` to ``9`` controlling
the level of compression; ``1`` is fastest and produces the least
compression, and ``9`` is slowest and produces the most compression. ``0``
is no 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