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#17323: The "[X refs, Y blocks]" printed by debug builds has been disabled by default. It can be re-enabled with the -X showrefcount option.

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Ezio Melotti 2013-03-26 01:59:56 +02:00
parent 84e4316489
commit 1f8898a591
4 changed files with 62 additions and 7 deletions
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Doc/using/cmdline.rst
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@ -358,13 +358,21 @@ Miscellaneous options
.. cmdoption:: -X
Reserved for various implementation-specific options. CPython currently
defines just one, you can use ``-X faulthander`` to enable
:data:`faulthandler`. It also allows to pass arbitrary values and retrieve
them through the :data:`sys._xoptions` dictionary.
defines two possible values:
* ``-X faulthander`` to enable :mod:`faulthandler`;
* ``-X showrefcount`` to enable the output of the total reference count
and memory blocks (only works on debug builds);
It also allows to pass arbitrary values and retrieve them through the
:data:`sys._xoptions` dictionary.
.. versionchanged:: 3.2
It is now allowed to pass :option:`-X` with CPython.
.. versionadded:: 3.4
The ``-X showrefcount`` option.
Options you shouldn't use
~~~~~~~~~~~~~~~~~~~~~~~~~