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| -rw-r--r-- | Doc/lib/libsys.tex | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/Doc/lib/libsys.tex b/Doc/lib/libsys.tex index a92201c..1beb53c 100644 --- a/Doc/lib/libsys.tex +++ b/Doc/lib/libsys.tex @@ -138,6 +138,28 @@ generally one higher than you might expect, because it includes the (temporary) reference as an argument to \function{getrefcount()}. \end{funcdesc} +\begin{datadesc}{hexversion} +The version number encoded as a single integer. This is guaranteed to +increase with each version, including proper support for +non-production releases. For example, to test that the Python +interpreter is at least version 1.5.2, use: + +\begin{verbatim} +if sys.hexversion >= 0x010502F0: + # use some advanced feature + ... +else: + # use an alternative implementation or warn the user + ... +\end{verbatim} + +This is called \samp{hexversion} since it only really looks meaningful +when viewed as the result of passing it to the built-in +\function{hex()} function. The \code{version_info} value may be used +for a more human-friendly encoding of the same information. +\versionadded{1.5.2} +\end{datadesc} + \begin{datadesc}{last_type} \dataline{last_value} \dataline{last_traceback} @@ -304,6 +326,16 @@ directories (where appropriate on each platform). An example: \end{verbatim} \end{datadesc} +\begin{datadesc}{version_info} +A tuple containing the four components of the version number: +\var{major}, \var{minor}, \var{micro} as integers, and +\var{releaselevel} as a string. The \var{releaselevel} value will be +an empty string for a final release. The \code{version_info} value +corresponding to the \code{version} string shown above is +\code{(1, 5, 2, '')}. +\versionadded{1.6} +\end{datadesc} + \begin{datadesc}{winver} The version number used to form registry keys on Windows platforms. This is stored as string resource 1000 in the Python DLL. The value |