1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
|
:mod:`platform` --- Access to underlying platform's identifying data
=====================================================================
.. module:: platform
:synopsis: Retrieves as much platform identifying data as possible.
.. moduleauthor:: Marc-Andre Lemburg <mal@egenix.com>
.. sectionauthor:: Bjorn Pettersen <bpettersen@corp.fairisaac.com>
**Source code:** :source:`Lib/platform.py`
--------------
.. note::
Specific platforms listed alphabetically, with Linux included in the Unix
section.
Cross Platform
--------------
.. function:: architecture(executable=sys.executable, bits='', linkage='')
Queries the given executable (defaults to the Python interpreter binary) for
various architecture information.
Returns a tuple ``(bits, linkage)`` which contain information about the bit
architecture and the linkage format used for the executable. Both values are
returned as strings.
Values that cannot be determined are returned as given by the parameter presets.
If bits is given as ``''``, the :c:func:`sizeof(pointer)` (or
:c:func:`sizeof(long)` on Python version < 1.5.2) is used as indicator for the
supported pointer size.
The function relies on the system's :file:`file` command to do the actual work.
This is available on most if not all Unix platforms and some non-Unix platforms
and then only if the executable points to the Python interpreter. Reasonable
defaults are used when the above needs are not met.
.. note::
On Mac OS X (and perhaps other platforms), executable files may be
universal files containing multiple architectures.
To get at the "64-bitness" of the current interpreter, it is more
reliable to query the :attr:`sys.maxsize` attribute::
is_64bits = sys.maxsize > 2**32
.. function:: machine()
Returns the machine type, e.g. ``'i386'``. An empty string is returned if the
value cannot be determined.
.. function:: node()
Returns the computer's network name (may not be fully qualified!). An empty
string is returned if the value cannot be determined.
.. function:: platform(aliased=0, terse=0)
Returns a single string identifying the underlying platform with as much useful
information as possible.
The output is intended to be *human readable* rather than machine parseable. It
may look different on different platforms and this is intended.
If *aliased* is true, the function will use aliases for various platforms that
report system names which differ from their common names, for example SunOS will
be reported as Solaris. The :func:`system_alias` function is used to implement
this.
Setting *terse* to true causes the function to return only the absolute minimum
information needed to identify the platform.
.. function:: processor()
Returns the (real) processor name, e.g. ``'amdk6'``.
An empty string is returned if the value cannot be determined. Note that many
platforms do not provide this information or simply return the same value as for
:func:`machine`. NetBSD does this.
.. function:: python_build()
Returns a tuple ``(buildno, builddate)`` stating the Python build number and
date as strings.
.. function:: python_compiler()
Returns a string identifying the compiler used for compiling Python.
.. function:: python_branch()
Returns a string identifying the Python implementation SCM branch.
.. function:: python_implementation()
Returns a string identifying the Python implementation. Possible return values
are: 'CPython', 'IronPython', 'Jython', 'PyPy'.
.. function:: python_revision()
Returns a string identifying the Python implementation SCM revision.
.. function:: python_version()
Returns the Python version as string ``'major.minor.patchlevel'``
Note that unlike the Python ``sys.version``, the returned value will always
include the patchlevel (it defaults to 0).
.. function:: python_version_tuple()
Returns the Python version as tuple ``(major, minor, patchlevel)`` of strings.
Note that unlike the Python ``sys.version``, the returned value will always
include the patchlevel (it defaults to ``'0'``).
.. function:: release()
Returns the system's release, e.g. ``'2.2.0'`` or ``'NT'`` An empty string is
returned if the value cannot be determined.
.. function:: system()
Returns the system/OS name, e.g. ``'Linux'``, ``'Windows'``, or ``'Java'``. An
empty string is returned if the value cannot be determined.
.. function:: system_alias(system, release, version)
Returns ``(system, release, version)`` aliased to common marketing names used
for some systems. It also does some reordering of the information in some cases
where it would otherwise cause confusion.
.. function:: version()
Returns the system's release version, e.g. ``'#3 on degas'``. An empty string is
returned if the value cannot be determined.
.. function:: uname()
Fairly portable uname interface. Returns a tuple of strings ``(system, node,
release, version, machine, processor)`` identifying the underlying platform.
Note that unlike the :func:`os.uname` function this also returns possible
processor information as additional tuple entry.
Entries which cannot be determined are set to ``''``.
Java Platform
-------------
.. function:: java_ver(release='', vendor='', vminfo=('','',''), osinfo=('','',''))
Version interface for Jython.
Returns a tuple ``(release, vendor, vminfo, osinfo)`` with *vminfo* being a
tuple ``(vm_name, vm_release, vm_vendor)`` and *osinfo* being a tuple
``(os_name, os_version, os_arch)``. Values which cannot be determined are set to
the defaults given as parameters (which all default to ``''``).
Windows Platform
----------------
.. function:: win32_ver(release='', version='', csd='', ptype='')
Get additional version information from the Windows Registry and return a tuple
``(version, csd, ptype)`` referring to version number, CSD level and OS type
(multi/single processor).
As a hint: *ptype* is ``'Uniprocessor Free'`` on single processor NT machines
and ``'Multiprocessor Free'`` on multi processor machines. The *'Free'* refers
to the OS version being free of debugging code. It could also state *'Checked'*
which means the OS version uses debugging code, i.e. code that checks arguments,
ranges, etc.
.. note::
This function works best with Mark Hammond's
:mod:`win32all` package installed, but also on Python 2.3 and
later (support for this was added in Python 2.6). It obviously
only runs on Win32 compatible platforms.
Win95/98 specific
^^^^^^^^^^^^^^^^^
.. function:: popen(cmd, mode='r', bufsize=-1)
Portable :func:`popen` interface. Find a working popen implementation
preferring :func:`win32pipe.popen`. On Windows NT, :func:`win32pipe.popen`
should work; on Windows 9x it hangs due to bugs in the MS C library.
.. deprecated:: 3.3
This function is obsolete. Use the :mod:`subprocess` module. Check
especially the :ref:`subprocess-replacements` section.
Mac OS Platform
---------------
.. function:: mac_ver(release='', versioninfo=('','',''), machine='')
Get Mac OS version information and return it as tuple ``(release, versioninfo,
machine)`` with *versioninfo* being a tuple ``(version, dev_stage,
non_release_version)``.
Entries which cannot be determined are set to ``''``. All tuple entries are
strings.
Documentation for the underlying :c:func:`gestalt` API is available online at
http://www.rgaros.nl/gestalt/.
Unix Platforms
--------------
.. function:: dist(distname='', version='', id='', supported_dists=('SuSE','debian','redhat','mandrake',...))
This is another name for :func:`linux_distribution`.
.. function:: linux_distribution(distname='', version='', id='', supported_dists=('SuSE','debian','redhat','mandrake',...), full_distribution_name=1)
Tries to determine the name of the Linux OS distribution name.
``supported_dists`` may be given to define the set of Linux distributions to
look for. It defaults to a list of currently supported Linux distributions
identified by their release file name.
If ``full_distribution_name`` is true (default), the full distribution read
from the OS is returned. Otherwise the short name taken from
``supported_dists`` is used.
Returns a tuple ``(distname,version,id)`` which defaults to the args given as
parameters. ``id`` is the item in parentheses after the version number. It
is usually the version codename.
.. function:: libc_ver(executable=sys.executable, lib='', version='', chunksize=2048)
Tries to determine the libc version against which the file executable (defaults
to the Python interpreter) is linked. Returns a tuple of strings ``(lib,
version)`` which default to the given parameters in case the lookup fails.
Note that this function has intimate knowledge of how different libc versions
add symbols to the executable is probably only usable for executables compiled
using :program:`gcc`.
The file is read and scanned in chunks of *chunksize* bytes.
|
