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Fix 2.7ism.

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Georg Brandl 2010-08-03 10:16:19 +00:00
parent c438d1d021
commit 1ce3a6864c
1 changed files with 4 additions and 7 deletions
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11
Doc/library/constants.rst
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@ -42,17 +42,14 @@ A small number of constants live in the built-in namespace. They are:
.. data:: __debug__ .. data:: __debug__
This constant is true if Python was not started with an :option:`-O` option. This constant is true if Python was not started with an :option:`-O` option.
See also the :keyword:`assert` statement. It cannot be reassigned. See also the :keyword:`assert` statement.
.. note:: .. note::
The names :data:`None` and :data:`__debug__` cannot be reassigned The name :data:`None` cannot be reassigned (assignments to it, even as an
(assignments to them, even as an attribute name, raise :exc:`SyntaxError`), attribute name, raise :exc:`SyntaxError`), so it can be considered a "true"
so they can be considered "true" constants. constant.
.. versionchanged:: 2.7
Assignments to ``__debug__`` as an attribute became illegal.
Constants added by the :mod:`site` module Constants added by the :mod:`site` module