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Diffstat (limited to 'Doc/lib/librandom.tex')
| -rw-r--r-- | Doc/lib/librandom.tex | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/Doc/lib/librandom.tex b/Doc/lib/librandom.tex index 787e134..443528d 100644 --- a/Doc/lib/librandom.tex +++ b/Doc/lib/librandom.tex @@ -61,10 +61,11 @@ Bookkeeping functions: Optional argument \var{x} can be any hashable object. If \var{x} is omitted or \code{None}, current system time is used; current system time is also used to initialize the generator when the - module is first imported. If hardware random sources are available, - they are used instead of the system time (see the \function{os.urandom()} + module is first imported. If randomness sources are provided by the + operating system, they are used instead of the system time (see the + \function{os.urandom()} function for details on availability). \versionchanged[formerly, - hardward sources were not used]{2.4} + operating system resources were not used]{2.4} If \var{x} is not \code{None} or an int or long, \code{hash(\var{x})} is used instead. If \var{x} is an int or long, \var{x} is used directly. @@ -249,9 +250,10 @@ require care that two independent random sequences do not overlap. yield no more than about 2**24 distinct internal states in all. \end{funcdesc} -\begin{classdesc}{HardwareRandom}{\optional{seed}} +\begin{classdesc}{SystemRandom}{\optional{seed}} Class that uses the \function{os.urandom()} function for generating -random numbers from hardware. Not available on all systems. +random numbers from sources provided by the operating system. +Not available on all systems. Does not rely on software state and sequences are not reproducible. Accordingly, the \method{seed()} and \method{jumpahead()} methods have no effect and are ignored. The \method{getstate()} and |