| #!/usr/bin/env python3 |
| |
| """ This module tries to retrieve as much platform-identifying data as |
| possible. It makes this information available via function APIs. |
| |
| If called from the command line, it prints the platform |
| information concatenated as single string to stdout. The output |
| format is useable as part of a filename. |
| |
| """ |
| # This module is maintained by Marc-Andre Lemburg <mal@egenix.com>. |
| # If you find problems, please submit bug reports/patches via the |
| # Python bug tracker (http://bugs.python.org) and assign them to "lemburg". |
| # |
| # Still needed: |
| # * support for MS-DOS (PythonDX ?) |
| # * support for Amiga and other still unsupported platforms running Python |
| # * support for additional Linux distributions |
| # |
| # Many thanks to all those who helped adding platform-specific |
| # checks (in no particular order): |
| # |
| # Charles G Waldman, David Arnold, Gordon McMillan, Ben Darnell, |
| # Jeff Bauer, Cliff Crawford, Ivan Van Laningham, Josef |
| # Betancourt, Randall Hopper, Karl Putland, John Farrell, Greg |
| # Andruk, Just van Rossum, Thomas Heller, Mark R. Levinson, Mark |
| # Hammond, Bill Tutt, Hans Nowak, Uwe Zessin (OpenVMS support), |
| # Colin Kong, Trent Mick, Guido van Rossum, Anthony Baxter, Steve |
| # Dower |
| # |
| # History: |
| # |
| # <see CVS and SVN checkin messages for history> |
| # |
| # 1.0.8 - changed Windows support to read version from kernel32.dll |
| # 1.0.7 - added DEV_NULL |
| # 1.0.6 - added linux_distribution() |
| # 1.0.5 - fixed Java support to allow running the module on Jython |
| # 1.0.4 - added IronPython support |
| # 1.0.3 - added normalization of Windows system name |
| # 1.0.2 - added more Windows support |
| # 1.0.1 - reformatted to make doc.py happy |
| # 1.0.0 - reformatted a bit and checked into Python CVS |
| # 0.8.0 - added sys.version parser and various new access |
| # APIs (python_version(), python_compiler(), etc.) |
| # 0.7.2 - fixed architecture() to use sizeof(pointer) where available |
| # 0.7.1 - added support for Caldera OpenLinux |
| # 0.7.0 - some fixes for WinCE; untabified the source file |
| # 0.6.2 - support for OpenVMS - requires version 1.5.2-V006 or higher and |
| # vms_lib.getsyi() configured |
| # 0.6.1 - added code to prevent 'uname -p' on platforms which are |
| # known not to support it |
| # 0.6.0 - fixed win32_ver() to hopefully work on Win95,98,NT and Win2k; |
| # did some cleanup of the interfaces - some APIs have changed |
| # 0.5.5 - fixed another type in the MacOS code... should have |
| # used more coffee today ;-) |
| # 0.5.4 - fixed a few typos in the MacOS code |
| # 0.5.3 - added experimental MacOS support; added better popen() |
| # workarounds in _syscmd_ver() -- still not 100% elegant |
| # though |
| # 0.5.2 - fixed uname() to return '' instead of 'unknown' in all |
| # return values (the system uname command tends to return |
| # 'unknown' instead of just leaving the field empty) |
| # 0.5.1 - included code for slackware dist; added exception handlers |
| # to cover up situations where platforms don't have os.popen |
| # (e.g. Mac) or fail on socket.gethostname(); fixed libc |
| # detection RE |
| # 0.5.0 - changed the API names referring to system commands to *syscmd*; |
| # added java_ver(); made syscmd_ver() a private |
| # API (was system_ver() in previous versions) -- use uname() |
| # instead; extended the win32_ver() to also return processor |
| # type information |
| # 0.4.0 - added win32_ver() and modified the platform() output for WinXX |
| # 0.3.4 - fixed a bug in _follow_symlinks() |
| # 0.3.3 - fixed popen() and "file" command invocation bugs |
| # 0.3.2 - added architecture() API and support for it in platform() |
| # 0.3.1 - fixed syscmd_ver() RE to support Windows NT |
| # 0.3.0 - added system alias support |
| # 0.2.3 - removed 'wince' again... oh well. |
| # 0.2.2 - added 'wince' to syscmd_ver() supported platforms |
| # 0.2.1 - added cache logic and changed the platform string format |
| # 0.2.0 - changed the API to use functions instead of module globals |
| # since some action take too long to be run on module import |
| # 0.1.0 - first release |
| # |
| # You can always get the latest version of this module at: |
| # |
| # http://www.egenix.com/files/python/platform.py |
| # |
| # If that URL should fail, try contacting the author. |
| |
| __copyright__ = """ |
| Copyright (c) 1999-2000, Marc-Andre Lemburg; mailto:mal@lemburg.com |
| Copyright (c) 2000-2010, eGenix.com Software GmbH; mailto:info@egenix.com |
| |
| Permission to use, copy, modify, and distribute this software and its |
| documentation for any purpose and without fee or royalty is hereby granted, |
| provided that the above copyright notice appear in all copies and that |
| both that copyright notice and this permission notice appear in |
| supporting documentation or portions thereof, including modifications, |
| that you make. |
| |
| EGENIX.COM SOFTWARE GMBH DISCLAIMS ALL WARRANTIES WITH REGARD TO |
| THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| FITNESS, IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, |
| INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING |
| FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, |
| NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION |
| WITH THE USE OR PERFORMANCE OF THIS SOFTWARE ! |
| |
| """ |
| |
| __version__ = '1.0.8' |
| |
| import collections |
| import os |
| import re |
| import sys |
| import subprocess |
| import functools |
| import itertools |
| |
| ### Globals & Constants |
| |
| # Helper for comparing two version number strings. |
| # Based on the description of the PHP's version_compare(): |
| # http://php.net/manual/en/function.version-compare.php |
| |
| _ver_stages = { |
| # any string not found in this dict, will get 0 assigned |
| 'dev': 10, |
| 'alpha': 20, 'a': 20, |
| 'beta': 30, 'b': 30, |
| 'c': 40, |
| 'RC': 50, 'rc': 50, |
| # number, will get 100 assigned |
| 'pl': 200, 'p': 200, |
| } |
| |
| _component_re = re.compile(r'([0-9]+|[._+-])') |
| |
| def _comparable_version(version): |
| result = [] |
| for v in _component_re.split(version): |
| if v not in '._+-': |
| try: |
| v = int(v, 10) |
| t = 100 |
| except ValueError: |
| t = _ver_stages.get(v, 0) |
| result.extend((t, v)) |
| return result |
| |
| ### Platform specific APIs |
| |
| _libc_search = re.compile(b'(__libc_init)' |
| b'|' |
| b'(GLIBC_([0-9.]+))' |
| b'|' |
| br'(libc(_\w+)?\.so(?:\.(\d[0-9.]*))?)', re.ASCII) |
| |
| def libc_ver(executable=None, lib='', version='', chunksize=16384): |
| |
| """ Tries to determine the libc version that the file executable |
| (which defaults to the Python interpreter) is linked against. |
| |
| Returns a tuple of strings (lib,version) which default to the |
| given parameters in case the lookup fails. |
| |
| Note that the function has intimate knowledge of how different |
| libc versions add symbols to the executable and thus is probably |
| only useable for executables compiled using gcc. |
| |
| The file is read and scanned in chunks of chunksize bytes. |
| |
| """ |
| if executable is None: |
| try: |
| ver = os.confstr('CS_GNU_LIBC_VERSION') |
| # parse 'glibc 2.28' as ('glibc', '2.28') |
| parts = ver.split(maxsplit=1) |
| if len(parts) == 2: |
| return tuple(parts) |
| except (AttributeError, ValueError, OSError): |
| # os.confstr() or CS_GNU_LIBC_VERSION value not available |
| pass |
| |
| executable = sys.executable |
| |
| V = _comparable_version |
| if hasattr(os.path, 'realpath'): |
| # Python 2.2 introduced os.path.realpath(); it is used |
| # here to work around problems with Cygwin not being |
| # able to open symlinks for reading |
| executable = os.path.realpath(executable) |
| with open(executable, 'rb') as f: |
| binary = f.read(chunksize) |
| pos = 0 |
| while pos < len(binary): |
| if b'libc' in binary or b'GLIBC' in binary: |
| m = _libc_search.search(binary, pos) |
| else: |
| m = None |
| if not m or m.end() == len(binary): |
| chunk = f.read(chunksize) |
| if chunk: |
| binary = binary[max(pos, len(binary) - 1000):] + chunk |
| pos = 0 |
| continue |
| if not m: |
| break |
| libcinit, glibc, glibcversion, so, threads, soversion = [ |
| s.decode('latin1') if s is not None else s |
| for s in m.groups()] |
| if libcinit and not lib: |
| lib = 'libc' |
| elif glibc: |
| if lib != 'glibc': |
| lib = 'glibc' |
| version = glibcversion |
| elif V(glibcversion) > V(version): |
| version = glibcversion |
| elif so: |
| if lib != 'glibc': |
| lib = 'libc' |
| if soversion and (not version or V(soversion) > V(version)): |
| version = soversion |
| if threads and version[-len(threads):] != threads: |
| version = version + threads |
| pos = m.end() |
| return lib, version |
| |
| def _norm_version(version, build=''): |
| |
| """ Normalize the version and build strings and return a single |
| version string using the format major.minor.build (or patchlevel). |
| """ |
| l = version.split('.') |
| if build: |
| l.append(build) |
| try: |
| ints = map(int, l) |
| except ValueError: |
| strings = l |
| else: |
| strings = list(map(str, ints)) |
| version = '.'.join(strings[:3]) |
| return version |
| |
| _ver_output = re.compile(r'(?:([\w ]+) ([\w.]+) ' |
| r'.*' |
| r'\[.* ([\d.]+)\])') |
| |
| # Examples of VER command output: |
| # |
| # Windows 2000: Microsoft Windows 2000 [Version 5.00.2195] |
| # Windows XP: Microsoft Windows XP [Version 5.1.2600] |
| # Windows Vista: Microsoft Windows [Version 6.0.6002] |
| # |
| # Note that the "Version" string gets localized on different |
| # Windows versions. |
| |
| def _syscmd_ver(system='', release='', version='', |
| |
| supported_platforms=('win32', 'win16', 'dos')): |
| |
| """ Tries to figure out the OS version used and returns |
| a tuple (system, release, version). |
| |
| It uses the "ver" shell command for this which is known |
| to exists on Windows, DOS. XXX Others too ? |
| |
| In case this fails, the given parameters are used as |
| defaults. |
| |
| """ |
| if sys.platform not in supported_platforms: |
| return system, release, version |
| |
| # Try some common cmd strings |
| import subprocess |
| for cmd in ('ver', 'command /c ver', 'cmd /c ver'): |
| try: |
| info = subprocess.check_output(cmd, |
| stderr=subprocess.DEVNULL, |
| text=True, |
| shell=True) |
| except (OSError, subprocess.CalledProcessError) as why: |
| #print('Command %s failed: %s' % (cmd, why)) |
| continue |
| else: |
| break |
| else: |
| return system, release, version |
| |
| # Parse the output |
| info = info.strip() |
| m = _ver_output.match(info) |
| if m is not None: |
| system, release, version = m.groups() |
| # Strip trailing dots from version and release |
| if release[-1] == '.': |
| release = release[:-1] |
| if version[-1] == '.': |
| version = version[:-1] |
| # Normalize the version and build strings (eliminating additional |
| # zeros) |
| version = _norm_version(version) |
| return system, release, version |
| |
| _WIN32_CLIENT_RELEASES = { |
| (5, 0): "2000", |
| (5, 1): "XP", |
| # Strictly, 5.2 client is XP 64-bit, but platform.py historically |
| # has always called it 2003 Server |
| (5, 2): "2003Server", |
| (5, None): "post2003", |
| |
| (6, 0): "Vista", |
| (6, 1): "7", |
| (6, 2): "8", |
| (6, 3): "8.1", |
| (6, None): "post8.1", |
| |
| (10, 0): "10", |
| (10, None): "post10", |
| } |
| |
| # Server release name lookup will default to client names if necessary |
| _WIN32_SERVER_RELEASES = { |
| (5, 2): "2003Server", |
| |
| (6, 0): "2008Server", |
| (6, 1): "2008ServerR2", |
| (6, 2): "2012Server", |
| (6, 3): "2012ServerR2", |
| (6, None): "post2012ServerR2", |
| } |
| |
| def win32_is_iot(): |
| return win32_edition() in ('IoTUAP', 'NanoServer', 'WindowsCoreHeadless', 'IoTEdgeOS') |
| |
| def win32_edition(): |
| try: |
| try: |
| import winreg |
| except ImportError: |
| import _winreg as winreg |
| except ImportError: |
| pass |
| else: |
| try: |
| cvkey = r'SOFTWARE\Microsoft\Windows NT\CurrentVersion' |
| with winreg.OpenKeyEx(winreg.HKEY_LOCAL_MACHINE, cvkey) as key: |
| return winreg.QueryValueEx(key, 'EditionId')[0] |
| except OSError: |
| pass |
| |
| return None |
| |
| def win32_ver(release='', version='', csd='', ptype=''): |
| try: |
| from sys import getwindowsversion |
| except ImportError: |
| return release, version, csd, ptype |
| |
| winver = getwindowsversion() |
| maj, min, build = winver.platform_version or winver[:3] |
| version = '{0}.{1}.{2}'.format(maj, min, build) |
| |
| release = (_WIN32_CLIENT_RELEASES.get((maj, min)) or |
| _WIN32_CLIENT_RELEASES.get((maj, None)) or |
| release) |
| |
| # getwindowsversion() reflect the compatibility mode Python is |
| # running under, and so the service pack value is only going to be |
| # valid if the versions match. |
| if winver[:2] == (maj, min): |
| try: |
| csd = 'SP{}'.format(winver.service_pack_major) |
| except AttributeError: |
| if csd[:13] == 'Service Pack ': |
| csd = 'SP' + csd[13:] |
| |
| # VER_NT_SERVER = 3 |
| if getattr(winver, 'product_type', None) == 3: |
| release = (_WIN32_SERVER_RELEASES.get((maj, min)) or |
| _WIN32_SERVER_RELEASES.get((maj, None)) or |
| release) |
| |
| try: |
| try: |
| import winreg |
| except ImportError: |
| import _winreg as winreg |
| except ImportError: |
| pass |
| else: |
| try: |
| cvkey = r'SOFTWARE\Microsoft\Windows NT\CurrentVersion' |
| with winreg.OpenKeyEx(winreg.HKEY_LOCAL_MACHINE, cvkey) as key: |
| ptype = winreg.QueryValueEx(key, 'CurrentType')[0] |
| except OSError: |
| pass |
| |
| return release, version, csd, ptype |
| |
| |
| def _mac_ver_xml(): |
| fn = '/System/Library/CoreServices/SystemVersion.plist' |
| if not os.path.exists(fn): |
| return None |
| |
| try: |
| import plistlib |
| except ImportError: |
| return None |
| |
| with open(fn, 'rb') as f: |
| pl = plistlib.load(f) |
| release = pl['ProductVersion'] |
| versioninfo = ('', '', '') |
| machine = os.uname().machine |
| if machine in ('ppc', 'Power Macintosh'): |
| # Canonical name |
| machine = 'PowerPC' |
| |
| return release, versioninfo, machine |
| |
| |
| def mac_ver(release='', versioninfo=('', '', ''), machine=''): |
| |
| """ Get macOS 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 the parameter values |
| which default to ''. All tuple entries are strings. |
| """ |
| |
| # First try reading the information from an XML file which should |
| # always be present |
| info = _mac_ver_xml() |
| if info is not None: |
| return info |
| |
| # If that also doesn't work return the default values |
| return release, versioninfo, machine |
| |
| def _java_getprop(name, default): |
| |
| from java.lang import System |
| try: |
| value = System.getProperty(name) |
| if value is None: |
| return default |
| return value |
| except AttributeError: |
| return default |
| |
| def 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 ''). |
| |
| """ |
| # Import the needed APIs |
| try: |
| import java.lang |
| except ImportError: |
| return release, vendor, vminfo, osinfo |
| |
| vendor = _java_getprop('java.vendor', vendor) |
| release = _java_getprop('java.version', release) |
| vm_name, vm_release, vm_vendor = vminfo |
| vm_name = _java_getprop('java.vm.name', vm_name) |
| vm_vendor = _java_getprop('java.vm.vendor', vm_vendor) |
| vm_release = _java_getprop('java.vm.version', vm_release) |
| vminfo = vm_name, vm_release, vm_vendor |
| os_name, os_version, os_arch = osinfo |
| os_arch = _java_getprop('java.os.arch', os_arch) |
| os_name = _java_getprop('java.os.name', os_name) |
| os_version = _java_getprop('java.os.version', os_version) |
| osinfo = os_name, os_version, os_arch |
| |
| return release, vendor, vminfo, osinfo |
| |
| ### System name aliasing |
| |
| def 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. |
| |
| """ |
| if system == 'SunOS': |
| # Sun's OS |
| if release < '5': |
| # These releases use the old name SunOS |
| return system, release, version |
| # Modify release (marketing release = SunOS release - 3) |
| l = release.split('.') |
| if l: |
| try: |
| major = int(l[0]) |
| except ValueError: |
| pass |
| else: |
| major = major - 3 |
| l[0] = str(major) |
| release = '.'.join(l) |
| if release < '6': |
| system = 'Solaris' |
| else: |
| # XXX Whatever the new SunOS marketing name is... |
| system = 'Solaris' |
| |
| elif system == 'IRIX64': |
| # IRIX reports IRIX64 on platforms with 64-bit support; yet it |
| # is really a version and not a different platform, since 32-bit |
| # apps are also supported.. |
| system = 'IRIX' |
| if version: |
| version = version + ' (64bit)' |
| else: |
| version = '64bit' |
| |
| elif system in ('win32', 'win16'): |
| # In case one of the other tricks |
| system = 'Windows' |
| |
| # bpo-35516: Don't replace Darwin with macOS since input release and |
| # version arguments can be different than the currently running version. |
| |
| return system, release, version |
| |
| ### Various internal helpers |
| |
| def _platform(*args): |
| |
| """ Helper to format the platform string in a filename |
| compatible format e.g. "system-version-machine". |
| """ |
| # Format the platform string |
| platform = '-'.join(x.strip() for x in filter(len, args)) |
| |
| # Cleanup some possible filename obstacles... |
| platform = platform.replace(' ', '_') |
| platform = platform.replace('/', '-') |
| platform = platform.replace('\\', '-') |
| platform = platform.replace(':', '-') |
| platform = platform.replace(';', '-') |
| platform = platform.replace('"', '-') |
| platform = platform.replace('(', '-') |
| platform = platform.replace(')', '-') |
| |
| # No need to report 'unknown' information... |
| platform = platform.replace('unknown', '') |
| |
| # Fold '--'s and remove trailing '-' |
| while 1: |
| cleaned = platform.replace('--', '-') |
| if cleaned == platform: |
| break |
| platform = cleaned |
| while platform[-1] == '-': |
| platform = platform[:-1] |
| |
| return platform |
| |
| def _node(default=''): |
| |
| """ Helper to determine the node name of this machine. |
| """ |
| try: |
| import socket |
| except ImportError: |
| # No sockets... |
| return default |
| try: |
| return socket.gethostname() |
| except OSError: |
| # Still not working... |
| return default |
| |
| def _follow_symlinks(filepath): |
| |
| """ In case filepath is a symlink, follow it until a |
| real file is reached. |
| """ |
| filepath = os.path.abspath(filepath) |
| while os.path.islink(filepath): |
| filepath = os.path.normpath( |
| os.path.join(os.path.dirname(filepath), os.readlink(filepath))) |
| return filepath |
| |
| |
| def _syscmd_file(target, default=''): |
| |
| """ Interface to the system's file command. |
| |
| The function uses the -b option of the file command to have it |
| omit the filename in its output. Follow the symlinks. It returns |
| default in case the command should fail. |
| |
| """ |
| if sys.platform in ('dos', 'win32', 'win16'): |
| # XXX Others too ? |
| return default |
| |
| import subprocess |
| target = _follow_symlinks(target) |
| # "file" output is locale dependent: force the usage of the C locale |
| # to get deterministic behavior. |
| env = dict(os.environ, LC_ALL='C') |
| try: |
| # -b: do not prepend filenames to output lines (brief mode) |
| output = subprocess.check_output(['file', '-b', target], |
| stderr=subprocess.DEVNULL, |
| env=env) |
| except (OSError, subprocess.CalledProcessError): |
| return default |
| if not output: |
| return default |
| # With the C locale, the output should be mostly ASCII-compatible. |
| # Decode from Latin-1 to prevent Unicode decode error. |
| return output.decode('latin-1') |
| |
| ### Information about the used architecture |
| |
| # Default values for architecture; non-empty strings override the |
| # defaults given as parameters |
| _default_architecture = { |
| 'win32': ('', 'WindowsPE'), |
| 'win16': ('', 'Windows'), |
| 'dos': ('', 'MSDOS'), |
| } |
| |
| def 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 contains 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 sizeof(pointer) |
| (or 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" command to do the |
| actual work. This is available on most if not all Unix |
| platforms. On some non-Unix platforms where the "file" command |
| does not exist and the executable is set to the Python interpreter |
| binary defaults from _default_architecture are used. |
| |
| """ |
| # Use the sizeof(pointer) as default number of bits if nothing |
| # else is given as default. |
| if not bits: |
| import struct |
| size = struct.calcsize('P') |
| bits = str(size * 8) + 'bit' |
| |
| # Get data from the 'file' system command |
| if executable: |
| fileout = _syscmd_file(executable, '') |
| else: |
| fileout = '' |
| |
| if not fileout and \ |
| executable == sys.executable: |
| # "file" command did not return anything; we'll try to provide |
| # some sensible defaults then... |
| if sys.platform in _default_architecture: |
| b, l = _default_architecture[sys.platform] |
| if b: |
| bits = b |
| if l: |
| linkage = l |
| return bits, linkage |
| |
| if 'executable' not in fileout and 'shared object' not in fileout: |
| # Format not supported |
| return bits, linkage |
| |
| # Bits |
| if '32-bit' in fileout: |
| bits = '32bit' |
| elif 'N32' in fileout: |
| # On Irix only |
| bits = 'n32bit' |
| elif '64-bit' in fileout: |
| bits = '64bit' |
| |
| # Linkage |
| if 'ELF' in fileout: |
| linkage = 'ELF' |
| elif 'PE' in fileout: |
| # E.g. Windows uses this format |
| if 'Windows' in fileout: |
| linkage = 'WindowsPE' |
| else: |
| linkage = 'PE' |
| elif 'COFF' in fileout: |
| linkage = 'COFF' |
| elif 'MS-DOS' in fileout: |
| linkage = 'MSDOS' |
| else: |
| # XXX the A.OUT format also falls under this class... |
| pass |
| |
| return bits, linkage |
| |
| |
| def _get_machine_win32(): |
| # Try to use the PROCESSOR_* environment variables |
| # available on Win XP and later; see |
| # http://support.microsoft.com/kb/888731 and |
| # http://www.geocities.com/rick_lively/MANUALS/ENV/MSWIN/PROCESSI.HTM |
| |
| # WOW64 processes mask the native architecture |
| return ( |
| os.environ.get('PROCESSOR_ARCHITEW6432', '') or |
| os.environ.get('PROCESSOR_ARCHITECTURE', '') |
| ) |
| |
| |
| class _Processor: |
| @classmethod |
| def get(cls): |
| func = getattr(cls, f'get_{sys.platform}', cls.from_subprocess) |
| return func() or '' |
| |
| def get_win32(): |
| return os.environ.get('PROCESSOR_IDENTIFIER', _get_machine_win32()) |
| |
| def get_OpenVMS(): |
| try: |
| import vms_lib |
| except ImportError: |
| pass |
| else: |
| csid, cpu_number = vms_lib.getsyi('SYI$_CPU', 0) |
| return 'Alpha' if cpu_number >= 128 else 'VAX' |
| |
| def from_subprocess(): |
| """ |
| Fall back to `uname -p` |
| """ |
| try: |
| return subprocess.check_output( |
| ['uname', '-p'], |
| stderr=subprocess.DEVNULL, |
| text=True, |
| ).strip() |
| except (OSError, subprocess.CalledProcessError): |
| pass |
| |
| |
| def _unknown_as_blank(val): |
| return '' if val == 'unknown' else val |
| |
| |
| ### Portable uname() interface |
| |
| class uname_result( |
| collections.namedtuple( |
| "uname_result_base", |
| "system node release version machine") |
| ): |
| """ |
| A uname_result that's largely compatible with a |
| simple namedtuple except that 'platform' is |
| resolved late and cached to avoid calling "uname" |
| except when needed. |
| """ |
| |
| @functools.cached_property |
| def processor(self): |
| return _unknown_as_blank(_Processor.get()) |
| |
| def __iter__(self): |
| return itertools.chain( |
| super().__iter__(), |
| (self.processor,) |
| ) |
| |
| def __getitem__(self, key): |
| return tuple(iter(self))[key] |
| |
| def __len__(self): |
| return len(tuple(iter(self))) |
| |
| |
| _uname_cache = None |
| |
| |
| def uname(): |
| |
| """ Fairly portable uname interface. Returns a tuple |
| of strings (system, node, release, version, machine, processor) |
| identifying the underlying platform. |
| |
| Note that unlike the os.uname function this also returns |
| possible processor information as an additional tuple entry. |
| |
| Entries which cannot be determined are set to ''. |
| |
| """ |
| global _uname_cache |
| |
| if _uname_cache is not None: |
| return _uname_cache |
| |
| # Get some infos from the builtin os.uname API... |
| try: |
| system, node, release, version, machine = infos = os.uname() |
| except AttributeError: |
| system = sys.platform |
| node = _node() |
| release = version = machine = '' |
| infos = () |
| |
| if not any(infos): |
| # uname is not available |
| |
| # Try win32_ver() on win32 platforms |
| if system == 'win32': |
| release, version, csd, ptype = win32_ver() |
| machine = machine or _get_machine_win32() |
| |
| # Try the 'ver' system command available on some |
| # platforms |
| if not (release and version): |
| system, release, version = _syscmd_ver(system) |
| # Normalize system to what win32_ver() normally returns |
| # (_syscmd_ver() tends to return the vendor name as well) |
| if system == 'Microsoft Windows': |
| system = 'Windows' |
| elif system == 'Microsoft' and release == 'Windows': |
| # Under Windows Vista and Windows Server 2008, |
| # Microsoft changed the output of the ver command. The |
| # release is no longer printed. This causes the |
| # system and release to be misidentified. |
| system = 'Windows' |
| if '6.0' == version[:3]: |
| release = 'Vista' |
| else: |
| release = '' |
| |
| # In case we still don't know anything useful, we'll try to |
| # help ourselves |
| if system in ('win32', 'win16'): |
| if not version: |
| if system == 'win32': |
| version = '32bit' |
| else: |
| version = '16bit' |
| system = 'Windows' |
| |
| elif system[:4] == 'java': |
| release, vendor, vminfo, osinfo = java_ver() |
| system = 'Java' |
| version = ', '.join(vminfo) |
| if not version: |
| version = vendor |
| |
| # System specific extensions |
| if system == 'OpenVMS': |
| # OpenVMS seems to have release and version mixed up |
| if not release or release == '0': |
| release = version |
| version = '' |
| |
| # normalize name |
| if system == 'Microsoft' and release == 'Windows': |
| system = 'Windows' |
| release = 'Vista' |
| |
| vals = system, node, release, version, machine |
| # Replace 'unknown' values with the more portable '' |
| _uname_cache = uname_result(*map(_unknown_as_blank, vals)) |
| return _uname_cache |
| |
| ### Direct interfaces to some of the uname() return values |
| |
| def system(): |
| |
| """ Returns the system/OS name, e.g. 'Linux', 'Windows' or 'Java'. |
| |
| An empty string is returned if the value cannot be determined. |
| |
| """ |
| return uname().system |
| |
| def node(): |
| |
| """ Returns the computer's network name (which may not be fully |
| qualified) |
| |
| An empty string is returned if the value cannot be determined. |
| |
| """ |
| return uname().node |
| |
| def release(): |
| |
| """ Returns the system's release, e.g. '2.2.0' or 'NT' |
| |
| An empty string is returned if the value cannot be determined. |
| |
| """ |
| return uname().release |
| |
| def version(): |
| |
| """ Returns the system's release version, e.g. '#3 on degas' |
| |
| An empty string is returned if the value cannot be determined. |
| |
| """ |
| return uname().version |
| |
| def machine(): |
| |
| """ Returns the machine type, e.g. 'i386' |
| |
| An empty string is returned if the value cannot be determined. |
| |
| """ |
| return uname().machine |
| |
| def processor(): |
| |
| """ Returns the (true) 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 machine(), |
| e.g. NetBSD does this. |
| |
| """ |
| return uname().processor |
| |
| ### Various APIs for extracting information from sys.version |
| |
| _sys_version_parser = re.compile( |
| r'([\w.+]+)\s*' # "version<space>" |
| r'\(#?([^,]+)' # "(#buildno" |
| r'(?:,\s*([\w ]*)' # ", builddate" |
| r'(?:,\s*([\w :]*))?)?\)\s*' # ", buildtime)<space>" |
| r'\[([^\]]+)\]?', re.ASCII) # "[compiler]" |
| |
| _ironpython_sys_version_parser = re.compile( |
| r'IronPython\s*' |
| r'([\d\.]+)' |
| r'(?: \(([\d\.]+)\))?' |
| r' on (.NET [\d\.]+)', re.ASCII) |
| |
| # IronPython covering 2.6 and 2.7 |
| _ironpython26_sys_version_parser = re.compile( |
| r'([\d.]+)\s*' |
| r'\(IronPython\s*' |
| r'[\d.]+\s*' |
| r'\(([\d.]+)\) on ([\w.]+ [\d.]+(?: \(\d+-bit\))?)\)' |
| ) |
| |
| _pypy_sys_version_parser = re.compile( |
| r'([\w.+]+)\s*' |
| r'\(#?([^,]+),\s*([\w ]+),\s*([\w :]+)\)\s*' |
| r'\[PyPy [^\]]+\]?') |
| |
| _sys_version_cache = {} |
| |
| def _sys_version(sys_version=None): |
| |
| """ Returns a parsed version of Python's sys.version as tuple |
| (name, version, branch, revision, buildno, builddate, compiler) |
| referring to the Python implementation name, version, branch, |
| revision, build number, build date/time as string and the compiler |
| identification string. |
| |
| Note that unlike the Python sys.version, the returned value |
| for the Python version will always include the patchlevel (it |
| defaults to '.0'). |
| |
| The function returns empty strings for tuple entries that |
| cannot be determined. |
| |
| sys_version may be given to parse an alternative version |
| string, e.g. if the version was read from a different Python |
| interpreter. |
| |
| """ |
| # Get the Python version |
| if sys_version is None: |
| sys_version = sys.version |
| |
| # Try the cache first |
| result = _sys_version_cache.get(sys_version, None) |
| if result is not None: |
| return result |
| |
| # Parse it |
| if 'IronPython' in sys_version: |
| # IronPython |
| name = 'IronPython' |
| if sys_version.startswith('IronPython'): |
| match = _ironpython_sys_version_parser.match(sys_version) |
| else: |
| match = _ironpython26_sys_version_parser.match(sys_version) |
| |
| if match is None: |
| raise ValueError( |
| 'failed to parse IronPython sys.version: %s' % |
| repr(sys_version)) |
| |
| version, alt_version, compiler = match.groups() |
| buildno = '' |
| builddate = '' |
| |
| elif sys.platform.startswith('java'): |
| # Jython |
| name = 'Jython' |
| match = _sys_version_parser.match(sys_version) |
| if match is None: |
| raise ValueError( |
| 'failed to parse Jython sys.version: %s' % |
| repr(sys_version)) |
| version, buildno, builddate, buildtime, _ = match.groups() |
| if builddate is None: |
| builddate = '' |
| compiler = sys.platform |
| |
| elif "PyPy" in sys_version: |
| # PyPy |
| name = "PyPy" |
| match = _pypy_sys_version_parser.match(sys_version) |
| if match is None: |
| raise ValueError("failed to parse PyPy sys.version: %s" % |
| repr(sys_version)) |
| version, buildno, builddate, buildtime = match.groups() |
| compiler = "" |
| |
| else: |
| # CPython |
| match = _sys_version_parser.match(sys_version) |
| if match is None: |
| raise ValueError( |
| 'failed to parse CPython sys.version: %s' % |
| repr(sys_version)) |
| version, buildno, builddate, buildtime, compiler = \ |
| match.groups() |
| name = 'CPython' |
| if builddate is None: |
| builddate = '' |
| elif buildtime: |
| builddate = builddate + ' ' + buildtime |
| |
| if hasattr(sys, '_git'): |
| _, branch, revision = sys._git |
| elif hasattr(sys, '_mercurial'): |
| _, branch, revision = sys._mercurial |
| else: |
| branch = '' |
| revision = '' |
| |
| # Add the patchlevel version if missing |
| l = version.split('.') |
| if len(l) == 2: |
| l.append('0') |
| version = '.'.join(l) |
| |
| # Build and cache the result |
| result = (name, version, branch, revision, buildno, builddate, compiler) |
| _sys_version_cache[sys_version] = result |
| return result |
| |
| def python_implementation(): |
| |
| """ Returns a string identifying the Python implementation. |
| |
| Currently, the following implementations are identified: |
| 'CPython' (C implementation of Python), |
| 'IronPython' (.NET implementation of Python), |
| 'Jython' (Java implementation of Python), |
| 'PyPy' (Python implementation of Python). |
| |
| """ |
| return _sys_version()[0] |
| |
| def 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). |
| |
| """ |
| return _sys_version()[1] |
| |
| def 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). |
| |
| """ |
| return tuple(_sys_version()[1].split('.')) |
| |
| def python_branch(): |
| |
| """ Returns a string identifying the Python implementation |
| branch. |
| |
| For CPython this is the SCM branch from which the |
| Python binary was built. |
| |
| If not available, an empty string is returned. |
| |
| """ |
| |
| return _sys_version()[2] |
| |
| def python_revision(): |
| |
| """ Returns a string identifying the Python implementation |
| revision. |
| |
| For CPython this is the SCM revision from which the |
| Python binary was built. |
| |
| If not available, an empty string is returned. |
| |
| """ |
| return _sys_version()[3] |
| |
| def python_build(): |
| |
| """ Returns a tuple (buildno, builddate) stating the Python |
| build number and date as strings. |
| |
| """ |
| return _sys_version()[4:6] |
| |
| def python_compiler(): |
| |
| """ Returns a string identifying the compiler used for compiling |
| Python. |
| |
| """ |
| return _sys_version()[6] |
| |
| ### The Opus Magnum of platform strings :-) |
| |
| _platform_cache = {} |
| |
| def platform(aliased=0, terse=0): |
| |
| """ Returns a single string identifying the underlying platform |
| with as much useful information as possible (but no more :). |
| |
| 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, e.g. SunOS will be reported as |
| Solaris. The 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. |
| |
| """ |
| result = _platform_cache.get((aliased, terse), None) |
| if result is not None: |
| return result |
| |
| # Get uname information and then apply platform specific cosmetics |
| # to it... |
| system, node, release, version, machine, processor = uname() |
| if machine == processor: |
| processor = '' |
| if aliased: |
| system, release, version = system_alias(system, release, version) |
| |
| if system == 'Darwin': |
| # macOS (darwin kernel) |
| macos_release = mac_ver()[0] |
| if macos_release: |
| system = 'macOS' |
| release = macos_release |
| |
| if system == 'Windows': |
| # MS platforms |
| rel, vers, csd, ptype = win32_ver(version) |
| if terse: |
| platform = _platform(system, release) |
| else: |
| platform = _platform(system, release, version, csd) |
| |
| elif system in ('Linux',): |
| # check for libc vs. glibc |
| libcname, libcversion = libc_ver() |
| platform = _platform(system, release, machine, processor, |
| 'with', |
| libcname+libcversion) |
| elif system == 'Java': |
| # Java platforms |
| r, v, vminfo, (os_name, os_version, os_arch) = java_ver() |
| if terse or not os_name: |
| platform = _platform(system, release, version) |
| else: |
| platform = _platform(system, release, version, |
| 'on', |
| os_name, os_version, os_arch) |
| |
| else: |
| # Generic handler |
| if terse: |
| platform = _platform(system, release) |
| else: |
| bits, linkage = architecture(sys.executable) |
| platform = _platform(system, release, machine, |
| processor, bits, linkage) |
| |
| _platform_cache[(aliased, terse)] = platform |
| return platform |
| |
| ### Command line interface |
| |
| if __name__ == '__main__': |
| # Default is to print the aliased verbose platform string |
| terse = ('terse' in sys.argv or '--terse' in sys.argv) |
| aliased = (not 'nonaliased' in sys.argv and not '--nonaliased' in sys.argv) |
| print(platform(aliased, terse)) |
| sys.exit(0) |
