222 lines
8.2 KiB
TeX
222 lines
8.2 KiB
TeX
\section{\module{platform} ---
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Access to underlying platform's identifying data.}
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\declaremodule{standard}{platform}
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\modulesynopsis{Retrieves as much platform identifying data as possible.}
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\moduleauthor{Marc-Andre Lemburg}{mal@egenix.com}
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\sectionauthor{Bjorn Pettersen}{bpettersen@corp.fairisaac.com}
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\versionadded{2.3}
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\begin{notice}
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Specific platforms listed alphabetically, with Linux included in the
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\UNIX{} section.
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\end{notice}
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\subsection{Cross Platform}
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\begin{funcdesc}{architecture}{executable=sys.executable, bits='', linkage=''}
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Queries the given executable (defaults to the Python interpreter
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binary) for various architecture information.
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Returns a tuple \code{(bits, linkage)} which contain information about
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the bit architecture and the linkage format used for the
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executable. Both values are returned as strings.
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Values that cannot be determined are returned as given by the
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parameter presets. If bits is given as \code{''}, the
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\cfunction{sizeof(pointer)}
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(or \cfunction{sizeof(long)} on Python version < 1.5.2) is used as
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indicator for the supported pointer size.
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The function relies on the system's \file{file} command to do the
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actual work. This is available on most if not all \UNIX{}
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platforms and some non-\UNIX{} platforms and then only if the
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executable points to the Python interpreter. Reasonable defaults
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are used when the above needs are not met.
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\end{funcdesc}
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\begin{funcdesc}{machine}{}
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Returns the machine type, e.g. \code{'i386'}.
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An empty string is returned if the value cannot be determined.
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\end{funcdesc}
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\begin{funcdesc}{node}{}
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Returns the computer's network name (may not be fully qualified!).
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An empty string is returned if the value cannot be determined.
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\end{funcdesc}
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\begin{funcdesc}{platform}{aliased=0, terse=0}
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Returns a single string identifying the underlying platform
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with as much useful information as possible.
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The output is intended to be \emph{human readable} rather than
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machine parseable. It may look different on different platforms and
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this is intended.
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If \var{aliased} is true, the function will use aliases for various
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platforms that report system names which differ from their common
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names, for example SunOS will be reported as Solaris. The
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\function{system_alias()} function is used to implement this.
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Setting \var{terse} to true causes the function to return only the
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absolute minimum information needed to identify the platform.
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\end{funcdesc}
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\begin{funcdesc}{processor}{}
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Returns the (real) processor name, e.g. \code{'amdk6'}.
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An empty string is returned if the value cannot be determined. Note
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that many platforms do not provide this information or simply return
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the same value as for \function{machine()}. NetBSD does this.
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\end{funcdesc}
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\begin{funcdesc}{python_build}{}
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Returns a tuple \code{(\var{buildno}, \var{builddate})} stating the
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Python build number and date as strings.
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\end{funcdesc}
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\begin{funcdesc}{python_compiler}{}
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Returns a string identifying the compiler used for compiling Python.
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\end{funcdesc}
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\begin{funcdesc}{python_version}{}
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Returns the Python version as string \code{'major.minor.patchlevel'}
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Note that unlike the Python \code{sys.version}, the returned value
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will always include the patchlevel (it defaults to 0).
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\end{funcdesc}
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\begin{funcdesc}{python_version_tuple}{}
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Returns the Python version as tuple \code{(\var{major}, \var{minor},
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\var{patchlevel})} of strings.
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Note that unlike the Python \code{sys.version}, the returned value
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will always include the patchlevel (it defaults to \code{'0'}).
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\end{funcdesc}
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\begin{funcdesc}{release}{}
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Returns the system's release, e.g. \code{'2.2.0'} or \code{'NT'}
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An empty string is returned if the value cannot be determined.
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\end{funcdesc}
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\begin{funcdesc}{system}{}
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Returns the system/OS name, e.g. \code{'Linux'}, \code{'Windows'},
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or \code{'Java'}.
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An empty string is returned if the value cannot be determined.
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\end{funcdesc}
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\begin{funcdesc}{system_alias}{system, release, version}
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Returns \code{(\var{system}, \var{release}, \var{version})} aliased
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to common marketing names used for some systems. It also does some
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reordering of the information in some cases where it would otherwise
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cause confusion.
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\end{funcdesc}
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\begin{funcdesc}{version}{}
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Returns the system's release version, e.g. \code{'\#3 on degas'}.
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An empty string is returned if the value cannot be determined.
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\end{funcdesc}
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\begin{funcdesc}{uname}{}
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Fairly portable uname interface. Returns a tuple of strings
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\code{(\var{system}, \var{node}, \var{release}, \var{version},
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\var{machine}, \var{processor})} identifying the underlying
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platform.
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Note that unlike the \function{os.uname()} function this also returns
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possible processor information as additional tuple entry.
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Entries which cannot be determined are set to \code{''}.
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\end{funcdesc}
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\subsection{Java Platform}
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\begin{funcdesc}{java_ver}{release='', vendor='', vminfo=('','',''),
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osinfo=('','','')}
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Version interface for JPython.
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Returns a tuple \code{(\var{release}, \var{vendor}, \var{vminfo},
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\var{osinfo})} with \var{vminfo} being a tuple \code{(\var{vm_name},
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\var{vm_release}, \var{vm_vendor})} and \var{osinfo} being a tuple
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\code{(\var{os_name}, \var{os_version}, \var{os_arch})}.
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Values which cannot be determined are set to the defaults
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given as parameters (which all default to \code{''}).
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\end{funcdesc}
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\subsection{Windows Platform}
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\begin{funcdesc}{win32_ver}{release='', version='', csd='', ptype=''}
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Get additional version information from the Windows Registry
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and return a tuple \code{(\var{version}, \var{csd}, \var{ptype})}
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referring to version number, CSD level and OS type (multi/single
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processor).
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As a hint: \var{ptype} is \code{'Uniprocessor Free'} on single
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processor NT machines and \code{'Multiprocessor Free'} on multi
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processor machines. The \emph{'Free'} refers to the OS version being
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free of debugging code. It could also state \emph{'Checked'} which
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means the OS version uses debugging code, i.e. code that
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checks arguments, ranges, etc.
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\begin{notice}[note]
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This function only works if Mark Hammond's \module{win32all}
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package is installed and (obviously) only runs on Win32
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compatible platforms.
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\end{notice}
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\end{funcdesc}
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\subsubsection{Win95/98 specific}
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\begin{funcdesc}{popen}{cmd, mode='r', bufsize=None}
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Portable \function{popen()} interface. Find a working popen
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implementation preferring \function{win32pipe.popen()}. On Windows
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NT, \function{win32pipe.popen()} should work; on Windows 9x it hangs
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due to bugs in the MS C library.
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% This KnowledgeBase article appears to be missing...
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%See also \ulink{MS KnowledgeBase article Q150956}{}.
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\end{funcdesc}
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\subsection{Mac OS Platform}
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\begin{funcdesc}{mac_ver}{release='', versioninfo=('','',''), machine=''}
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Get Mac OS version information and return it as tuple
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\code{(\var{release}, \var{versioninfo}, \var{machine})} with
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\var{versioninfo} being a tuple \code{(\var{version},
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\var{dev_stage}, \var{non_release_version})}.
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Entries which cannot be determined are set to \code{''}. All tuple
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entries are strings.
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Documentation for the underlying \cfunction{gestalt()} API is
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available online at \url{http://www.rgaros.nl/gestalt/}.
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\end{funcdesc}
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\subsection{\UNIX{} Platforms}
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\begin{funcdesc}{dist}{distname='', version='', id='',
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supported_dists=('SuSE','debian','redhat','mandrake')}
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Tries to determine the name of the OS distribution name
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Returns a tuple \code{(\var{distname}, \var{version}, \var{id})}
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which defaults to the args given as parameters.
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\end{funcdesc}
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\begin{funcdesc}{libc_ver}{executable=sys.executable, lib='',
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version='', chunksize=2048}
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Tries to determine the libc version against which the file
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executable (defaults to the Python interpreter) is linked. Returns
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a tuple of strings \code{(\var{lib}, \var{version})} which default
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to the given parameters in case the lookup fails.
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Note that this function has intimate knowledge of how different
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libc versions add symbols to the executable is probably only
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useable for executables compiled using \program{gcc}.
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The file is read and scanned in chunks of \var{chunksize} bytes.
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\end{funcdesc}
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