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Add example of ftplib's new context manager.

This commit is contained in:
Raymond Hettinger 2010-09-05 08:46:36 +00:00
parent ef2335ca08
commit bcbd69666b
1 changed files with 19 additions and 4 deletions
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23
Doc/whatsnew/3.2.rst
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@ -216,7 +216,7 @@ Some smaller changes made to the core Python language are:
:issue:`8814`.) :issue:`8814`.)
* The :mod:`abc` module now supports :func:`abstractclassmethod` and * The :mod:`abc` module now supports :func:`abstractclassmethod` and
:func:`staticmethod`. :func:`abstractstaticmethod`.
(:issue:`5867`) (:issue:`5867`)
@ -261,6 +261,20 @@ New, Improved, and Deprecated Modules
`appspot issue 53094 <http://codereview.appspot.com/53094>`_.) `appspot issue 53094 <http://codereview.appspot.com/53094>`_.)
* The :class:`ftplib.FTP` class now supports the context manager protocol * The :class:`ftplib.FTP` class now supports the context manager protocol
to unconditionally consume :exc:`socket.error` exceptions and to close
the ftp connection when done::
>>> from ftplib import FTP
>>> with FTP("ftp1.at.proftpd.org") as ftp:
... ftp.login()
... ftp.dir()
...
'230 Anonymous login ok, restrictions apply.'
dr-xr-xr-x 9 ftp ftp 154 May 6 10:43 .
dr-xr-xr-x 9 ftp ftp 154 May 6 10:43 ..
dr-xr-xr-x 5 ftp ftp 4096 May 6 10:43 CentOS
dr-xr-xr-x 3 ftp ftp 18 Jul 10 2008 Fedora
(Contributed by Tarek Ziadé and Giampaolo Rodolà; :issue:`4972`.) (Contributed by Tarek Ziadé and Giampaolo Rodolà; :issue:`4972`.)
* A warning message will now get printed at interpreter shutdown if * A warning message will now get printed at interpreter shutdown if
@ -270,16 +284,17 @@ New, Improved, and Deprecated Modules
* The :mod:`os` module now has the :const:`ST_RDONLY` and :const:`ST_NOSUID` * The :mod:`os` module now has the :const:`ST_RDONLY` and :const:`ST_NOSUID`
constants, for use with the :func:`~os.statvfs` function. constants, for use with the :func:`~os.statvfs` function.
(Patch by Adam Jackson; :issue:`7647`.) (Patch by Adam Jackson; :issue:`7647`.)
* The :func:`shutil.copytree` function has two new options: * The :func:`shutil.copytree` function has two new options:
* *ignore_dangling_symlinks*: when ``symlinks=False`` (meaning that the * *ignore_dangling_symlinks*: when ``symlinks=False`` dp that the
function copies the file pointed to by the symlink, not the symlink function copies the file pointed to by the symlink, not the symlink
itself) this option will silence the error raised if the file doesn't itself. This option will silence the error raised if the file doesn't
exist. exist.
* *copy_function*: a callable that will be used to copy files. * *copy_function*: is a callable that will be used to copy files.
:func:`shutil.copy2` is used by default. :func:`shutil.copy2` is used by default.
(Contributed by Tarek Ziadé.) (Contributed by Tarek Ziadé.)