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Patch #1492218: document None being a constant.

This commit is contained in:
Georg Brandl 2006-05-26 20:14:47 +00:00
parent 7784f12d74
commit a89dbec257
1 changed files with 9 additions and 7 deletions
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16
Doc/ref/ref2.tex
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@ -319,16 +319,18 @@ def for lambda try
% When adding keywords, use reswords.py for reformatting
Note that although the identifier \code{as} can be used as part of the
syntax of \keyword{import} statements, it is not currently a reserved
word by default.)
\versionchanged[\constant{None} became a constant and is now
recognized by the compiler as a name for the built-in object
\constant{None}. Although it is not a keyword, you cannot assign
a different object to it]{2.4}
\versionchanged[Both \keyword{as} and \keyword{with} are only recognized
when the \code{with_statement} feature has been enabled. It will always
be enabled in Python 2.6. See section~\ref{with} for details]{2.5}
when the \code{with_statement} future feature has been enabled.
It will always be enabled in Python 2.6. See section~\ref{with} for
details. Note that using \keyword{as} and \keyword{with} as identifiers
will always issue a warning, even when the \code{with_statement} future
directive is not in effect]{2.5}
In some future version of Python, the identifier \code{None} will
become a keyword.
\subsection{Reserved classes of identifiers\label{id-classes}}