text: #!/usr/bin/env python
  
  ###################################################################
  #  cpuinfo - Get information about CPU
  #
  #      License: BSD
  #      Author:  Pearu Peterson <pearu@cens.ioc.ee>
  #
  #  See LICENSES/cpuinfo.txt for details about copyright and
  #  rights to use.
  ####################################################################
  
  """
  cpuinfo
  
  Copyright 2002 Pearu Peterson all rights reserved,
  Pearu Peterson <pearu@cens.ioc.ee>
  Permission to use, modify, and distribute this software is given under the
  terms of the NumPy (BSD style) license.  See LICENSE.txt that came with
  this distribution for specifics.
  
  NO WARRANTY IS EXPRESSED OR IMPLIED.  USE AT YOUR OWN RISK.
  Pearu Peterson
  """
  
  __all__ = ['cpu']
  
  import sys, re, types
  import os
  import subprocess
  import warnings
  import platform
  import inspect
  
  is_cpu_amd_intel = False # DEPRECATION WARNING: WILL BE REMOVED IN FUTURE RELEASE
  
  def getoutput(cmd, successful_status=(0,), stacklevel=1):
      try:
          p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
          output, _ = p.communicate()
          status = p.returncode
      except EnvironmentError as e:
          warnings.warn(str(e), UserWarning, stacklevel=stacklevel)
          return False, ''
      if os.WIFEXITED(status) and os.WEXITSTATUS(status) in successful_status:
          return True, output
      return False, output
  
  
  def command_info(successful_status=(0,), stacklevel=1, **kw):
      info = {}
      for key in kw:
          ok, output = getoutput(kw[key], successful_status=successful_status,
                                 stacklevel=stacklevel + 1)
          if ok:
              info[key] = output.strip()
      return info
  
  
  def command_by_line(cmd, successful_status=(0,), stacklevel=1):
      ok, output = getoutput(cmd, successful_status=successful_status,
                             stacklevel=stacklevel + 1)
      if not ok:
          return
  
      # XXX: check
      output = output.decode('ascii')
  
      for line in output.splitlines():
          yield line.strip()
  
  
  def key_value_from_command(cmd, sep, successful_status=(0,),
                             stacklevel=1):
      d = {}
      for line in command_by_line(cmd, successful_status=successful_status,
                                  stacklevel=stacklevel + 1):
          l = [s.strip() for s in line.split(sep, 1)]
          if len(l) == 2:
              d[l[0]] = l[1]
      return d
  
  
  class CPUInfoBase(object):
      """Holds CPU information and provides methods for requiring
      the availability of various CPU features.
      """
  
      def _try_call(self, func):
          try:
              return func()
          except:
              pass
  
      def __getattr__(self, name):
          if not name.startswith('_'):
              if hasattr(self, '_' + name):
                  attr = getattr(self, '_' + name)
                  if inspect.ismethod(attr):
                      return lambda func=self._try_call, attr=attr: func(attr)
              else:
                  return lambda: None
          raise AttributeError(name)
  
      def _getNCPUs(self):
          return 1
  
      def __get_nbits(self):
          abits = platform.architecture()[0]
          nbits = re.compile('(\d+)bit').search(abits).group(1)
          return nbits
  
      def _is_32bit(self):
          return self.__get_nbits() == '32'
  
      def _is_64bit(self):
          return self.__get_nbits() == '64'
  
  
  class LinuxCPUInfo(CPUInfoBase):
      info = None
  
      def __init__(self):
          if self.info is not None:
              return
          info = [{}]
          ok, output = getoutput(['uname', '-m'])
          if ok:
              info[0]['uname_m'] = output.strip()
          try:
              fo = open('/proc/cpuinfo')
          except EnvironmentError as e:
              warnings.warn(str(e), UserWarning)
          else:
              for line in fo:
                  name_value = [s.strip() for s in line.split(':', 1)]
                  if len(name_value) != 2:
                      continue
                  name, value = name_value
                  if not info or name in info[-1]:  # next processor
                      info.append({})
                  info[-1][name] = value
              fo.close()
          self.__class__.info = info
  
      def _not_impl(self):
          pass
  
      # Athlon
  
      def _is_AMD(self):
          return self.info[0]['vendor_id'] == 'AuthenticAMD'
  
      def _is_AthlonK6_2(self):
          return self._is_AMD() and self.info[0]['model'] == '2'
  
      def _is_AthlonK6_3(self):
          return self._is_AMD() and self.info[0]['model'] == '3'
  
      def _is_AthlonK6(self):
          return re.match(r'.*?AMD-K6', self.info[0]['model name']) is not None
  
      def _is_AthlonK7(self):
          return re.match(r'.*?AMD-K7', self.info[0]['model name']) is not None
  
      def _is_AthlonMP(self):
          return re.match(r'.*?Athlon\(tm\) MP\b',
                          self.info[0]['model name']) is not None
  
      def _is_AMD64(self):
          return self.is_AMD() and self.info[0]['family'] == '15'
  
      def _is_Athlon64(self):
          return re.match(r'.*?Athlon\(tm\) 64\b',
                          self.info[0]['model name']) is not None
  
      def _is_AthlonHX(self):
          return re.match(r'.*?Athlon HX\b',
                          self.info[0]['model name']) is not None
  
      def _is_Opteron(self):
          return re.match(r'.*?Opteron\b',
                          self.info[0]['model name']) is not None
  
      def _is_Hammer(self):
          return re.match(r'.*?Hammer\b',
                          self.info[0]['model name']) is not None
  
      # Alpha
  
      def _is_Alpha(self):
          return self.info[0]['cpu'] == 'Alpha'
  
      def _is_EV4(self):
          return self.is_Alpha() and self.info[0]['cpu model'] == 'EV4'
  
      def _is_EV5(self):
          return self.is_Alpha() and self.info[0]['cpu model'] == 'EV5'
  
      def _is_EV56(self):
          return self.is_Alpha() and self.info[0]['cpu model'] == 'EV56'
  
      def _is_PCA56(self):
          return self.is_Alpha() and self.info[0]['cpu model'] == 'PCA56'
  
      # Intel
  
      #XXX
      _is_i386 = _not_impl
  
      def _is_Intel(self):
          return self.info[0]['vendor_id'] == 'GenuineIntel'
  
      def _is_i486(self):
          return self.info[0]['cpu'] == 'i486'
  
      def _is_i586(self):
          return self.is_Intel() and self.info[0]['cpu family'] == '5'
  
      def _is_i686(self):
          return self.is_Intel() and self.info[0]['cpu family'] == '6'
  
      def _is_Celeron(self):
          return re.match(r'.*?Celeron',
                          self.info[0]['model name']) is not None
  
      def _is_Pentium(self):
          return re.match(r'.*?Pentium',
                          self.info[0]['model name']) is not None
  
      def _is_PentiumII(self):
          return re.match(r'.*?Pentium.*?II\b',
                          self.info[0]['model name']) is not None
  
      def _is_PentiumPro(self):
          return re.match(r'.*?PentiumPro\b',
                          self.info[0]['model name']) is not None
  
      def _is_PentiumMMX(self):
          return re.match(r'.*?Pentium.*?MMX\b',
                          self.info[0]['model name']) is not None
  
      def _is_PentiumIII(self):
          return re.match(r'.*?Pentium.*?III\b',
                          self.info[0]['model name']) is not None
  
      def _is_PentiumIV(self):
          return re.match(r'.*?Pentium.*?(IV|4)\b',
                          self.info[0]['model name']) is not None
  
      def _is_PentiumM(self):
          return re.match(r'.*?Pentium.*?M\b',
                          self.info[0]['model name']) is not None
  
      def _is_Prescott(self):
          return self.is_PentiumIV() and self.has_sse3()
  
      def _is_Nocona(self):
          return (self.is_Intel() and
                  self.info[0]['cpu family'] in ('6', '15') and
                  # two s sse3; three s ssse3 not the same thing, this is fine
                  (self.has_sse3() and not self.has_ssse3()) and
                  re.match(r'.*?\blm\b', self.info[0]['flags']) is not None)
  
      def _is_Core2(self):
          return (self.is_64bit() and self.is_Intel() and
                  re.match(r'.*?Core\(TM\)2\b',
                           self.info[0]['model name']) is not None)
  
      def _is_Itanium(self):
          return re.match(r'.*?Itanium\b',
                          self.info[0]['family']) is not None
  
      def _is_XEON(self):
          return re.match(r'.*?XEON\b',
                          self.info[0]['model name'], re.IGNORECASE) is not None
  
      _is_Xeon = _is_XEON
  
      # Power
      def _is_Power(self):
          return re.match(r'.*POWER.*',
                         self.info[0]['cpu']) is not None
  
      def _is_Power7(self):
          return re.match(r'.*POWER7.*',
                         self.info[0]['cpu']) is not None
  
      def _is_Power8(self):
          return re.match(r'.*POWER8.*',
                         self.info[0]['cpu']) is not None
  
      def _is_Power9(self):
          return re.match(r'.*POWER9.*',
                         self.info[0]['cpu']) is not None
  
      def _has_Altivec(self):
          return re.match(r'.*altivec\ supported.*',
                         self.info[0]['cpu']) is not None
  
      # Varia
  
      def _is_singleCPU(self):
          return len(self.info) == 1
  
      def _getNCPUs(self):
          return len(self.info)
  
      def _has_fdiv_bug(self):
          return self.info[0]['fdiv_bug'] == 'yes'
  
      def _has_f00f_bug(self):
          return self.info[0]['f00f_bug'] == 'yes'
  
      def _has_mmx(self):
          return re.match(r'.*?\bmmx\b', self.info[0]['flags']) is not None
  
      def _has_sse(self):
          return re.match(r'.*?\bsse\b', self.info[0]['flags']) is not None
  
      def _has_sse2(self):
          return re.match(r'.*?\bsse2\b', self.info[0]['flags']) is not None
  
      def _has_sse3(self):
          return re.match(r'.*?\bpni\b', self.info[0]['flags']) is not None
  
      def _has_ssse3(self):
          return re.match(r'.*?\bssse3\b', self.info[0]['flags']) is not None
  
      def _has_3dnow(self):
          return re.match(r'.*?\b3dnow\b', self.info[0]['flags']) is not None
  
      def _has_3dnowext(self):
          return re.match(r'.*?\b3dnowext\b', self.info[0]['flags']) is not None
  
  
  class IRIXCPUInfo(CPUInfoBase):
      info = None
  
      def __init__(self):
          if self.info is not None:
              return
          info = key_value_from_command('sysconf', sep=' ',
                                        successful_status=(0, 1))
          self.__class__.info = info
  
      def _not_impl(self):
          pass
  
      def _is_singleCPU(self):
          return self.info.get('NUM_PROCESSORS') == '1'
  
      def _getNCPUs(self):
          return int(self.info.get('NUM_PROCESSORS', 1))
  
      def __cputype(self, n):
          return self.info.get('PROCESSORS').split()[0].lower() == 'r%s' % (n)
  
      def _is_r2000(self):
          return self.__cputype(2000)
  
      def _is_r3000(self):
          return self.__cputype(3000)
  
      def _is_r3900(self):
          return self.__cputype(3900)
  
      def _is_r4000(self):
          return self.__cputype(4000)
  
      def _is_r4100(self):
          return self.__cputype(4100)
  
      def _is_r4300(self):
          return self.__cputype(4300)
  
      def _is_r4400(self):
          return self.__cputype(4400)
  
      def _is_r4600(self):
          return self.__cputype(4600)
  
      def _is_r4650(self):
          return self.__cputype(4650)
  
      def _is_r5000(self):
          return self.__cputype(5000)
  
      def _is_r6000(self):
          return self.__cputype(6000)
  
      def _is_r8000(self):
          return self.__cputype(8000)
  
      def _is_r10000(self):
          return self.__cputype(10000)
  
      def _is_r12000(self):
          return self.__cputype(12000)
  
      def _is_rorion(self):
          return self.__cputype('orion')
  
      def get_ip(self):
          try:
              return self.info.get('MACHINE')
          except:
              pass
  
      def __machine(self, n):
          return self.info.get('MACHINE').lower() == 'ip%s' % (n)
  
      def _is_IP19(self):
          return self.__machine(19)
  
      def _is_IP20(self):
          return self.__machine(20)
  
      def _is_IP21(self):
          return self.__machine(21)
  
      def _is_IP22(self):
          return self.__machine(22)
  
      def _is_IP22_4k(self):
          return self.__machine(22) and self._is_r4000()
  
      def _is_IP22_5k(self):
          return self.__machine(22) and self._is_r5000()
  
      def _is_IP24(self):
          return self.__machine(24)
  
      def _is_IP25(self):
          return self.__machine(25)
  
      def _is_IP26(self):
          return self.__machine(26)
  
      def _is_IP27(self):
          return self.__machine(27)
  
      def _is_IP28(self):
          return self.__machine(28)
  
      def _is_IP30(self):
          return self.__machine(30)
  
      def _is_IP32(self):
          return self.__machine(32)
  
      def _is_IP32_5k(self):
          return self.__machine(32) and self._is_r5000()
  
      def _is_IP32_10k(self):
          return self.__machine(32) and self._is_r10000()
  
  
  class DarwinCPUInfo(CPUInfoBase):
      info = None
  
      def __init__(self):
          if self.info is not None:
              return
          info = command_info(arch='arch',
                              machine='machine')
          info['sysctl_hw'] = key_value_from_command(['sysctl', 'hw'], sep='=')
          self.__class__.info = info
  
      def _not_impl(self): pass
  
      def _getNCPUs(self):
          return int(self.info['sysctl_hw'].get('hw.ncpu', 1))
  
      def _is_Power_Macintosh(self):
          return self.info['sysctl_hw']['hw.machine'] == 'Power Macintosh'
  
      def _is_i386(self):
          return self.info['arch'] == 'i386'
  
      def _is_ppc(self):
          return self.info['arch'] == 'ppc'
  
      def __machine(self, n):
          return self.info['machine'] == 'ppc%s' % n
  
      def _is_ppc601(self): return self.__machine(601)
  
      def _is_ppc602(self): return self.__machine(602)
  
      def _is_ppc603(self): return self.__machine(603)
  
      def _is_ppc603e(self): return self.__machine('603e')
  
      def _is_ppc604(self): return self.__machine(604)
  
      def _is_ppc604e(self): return self.__machine('604e')
  
      def _is_ppc620(self): return self.__machine(620)
  
      def _is_ppc630(self): return self.__machine(630)
  
      def _is_ppc740(self): return self.__machine(740)
  
      def _is_ppc7400(self): return self.__machine(7400)
  
      def _is_ppc7450(self): return self.__machine(7450)
  
      def _is_ppc750(self): return self.__machine(750)
  
      def _is_ppc403(self): return self.__machine(403)
  
      def _is_ppc505(self): return self.__machine(505)
  
      def _is_ppc801(self): return self.__machine(801)
  
      def _is_ppc821(self): return self.__machine(821)
  
      def _is_ppc823(self): return self.__machine(823)
  
      def _is_ppc860(self): return self.__machine(860)
  
  class NetBSDCPUInfo(CPUInfoBase):
  	info = None
  
  	def __init__(self):
  		if self.info is not None:
  			return
  		info = {}
  		info['sysctl_hw'] = key_value_from_command(['sysctl', 'hw'], sep='=')
  		info['arch'] = info['sysctl_hw'].get('hw.machine_arch', 1)
  		info['machine'] = info['sysctl_hw'].get('hw.machine', 1)
  		self.__class__.info = info
  
  	def _not_impl(self): pass
  
  	def _getNCPUs(self):
  		return int(self.info['sysctl_hw'].get('hw.ncpu', 1))
  
  	def _is_Intel(self):
  		if self.info['sysctl_hw'].get('hw.model', "")[0:5] == 'Intel':
  			return True
  		return False
  
  	def _is_AMD(self):
  		if self.info['sysctl_hw'].get('hw.model', "")[0:3] == 'AMD':
  			return True
  		return False
  
  class SunOSCPUInfo(CPUInfoBase):
      info = None
  
      def __init__(self):
          if self.info is not None:
              return
          info = command_info(arch='arch',
                              mach='mach',
                              uname_i=['uname', '-i'],
                              isainfo_b=['isainfo', '-b'],
                              isainfo_n=['isainfo', '-n'],
          )
          info['uname_X'] = key_value_from_command(['uname', '-X'], sep='=')
          for line in command_by_line(['psrinfo', '-v', '0']):
              m = re.match(r'\s*The (?P<p>[\w\d]+) processor operates at', line)
              if m:
                  info['processor'] = m.group('p')
                  break
          self.__class__.info = info
  
      def _not_impl(self):
          pass
  
      def _is_i386(self):
          return self.info['isainfo_n'] == 'i386'
  
      def _is_sparc(self):
          return self.info['isainfo_n'] == 'sparc'
  
      def _is_sparcv9(self):
          return self.info['isainfo_n'] == 'sparcv9'
  
      def _getNCPUs(self):
          return int(self.info['uname_X'].get('NumCPU', 1))
  
      def _is_sun4(self):
          return self.info['arch'] == 'sun4'
  
      def _is_SUNW(self):
          return re.match(r'SUNW', self.info['uname_i']) is not None
  
      def _is_sparcstation5(self):
          return re.match(r'.*SPARCstation-5', self.info['uname_i']) is not None
  
      def _is_ultra1(self):
          return re.match(r'.*Ultra-1', self.info['uname_i']) is not None
  
      def _is_ultra250(self):
          return re.match(r'.*Ultra-250', self.info['uname_i']) is not None
  
      def _is_ultra2(self):
          return re.match(r'.*Ultra-2', self.info['uname_i']) is not None
  
      def _is_ultra30(self):
          return re.match(r'.*Ultra-30', self.info['uname_i']) is not None
  
      def _is_ultra4(self):
          return re.match(r'.*Ultra-4', self.info['uname_i']) is not None
  
      def _is_ultra5_10(self):
          return re.match(r'.*Ultra-5_10', self.info['uname_i']) is not None
  
      def _is_ultra5(self):
          return re.match(r'.*Ultra-5', self.info['uname_i']) is not None
  
      def _is_ultra60(self):
          return re.match(r'.*Ultra-60', self.info['uname_i']) is not None
  
      def _is_ultra80(self):
          return re.match(r'.*Ultra-80', self.info['uname_i']) is not None
  
      def _is_ultraenterprice(self):
          return re.match(r'.*Ultra-Enterprise', self.info['uname_i']) is not None
  
      def _is_ultraenterprice10k(self):
          return re.match(r'.*Ultra-Enterprise-10000', self.info['uname_i']) is not None
  
      def _is_sunfire(self):
          return re.match(r'.*Sun-Fire', self.info['uname_i']) is not None
  
      def _is_ultra(self):
          return re.match(r'.*Ultra', self.info['uname_i']) is not None
  
      def _is_cpusparcv7(self):
          return self.info['processor'] == 'sparcv7'
  
      def _is_cpusparcv8(self):
          return self.info['processor'] == 'sparcv8'
  
      def _is_cpusparcv9(self):
          return self.info['processor'] == 'sparcv9'
  
  
  class Win32CPUInfo(CPUInfoBase):
      info = None
      pkey = r"HARDWARE\DESCRIPTION\System\CentralProcessor"
      # XXX: what does the value of
      #   HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0
      # mean?
  
      def __init__(self):
          try:
              import _winreg
          except ImportError:  # Python 3
              import winreg as _winreg
  
          if self.info is not None:
              return
          info = []
          try:
              #XXX: Bad style to use so long `try:...except:...`. Fix it!
  
              prgx = re.compile(r"family\s+(?P<FML>\d+)\s+model\s+(?P<MDL>\d+)"
                                "\s+stepping\s+(?P<STP>\d+)", re.IGNORECASE)
              chnd = _winreg.OpenKey(_winreg.HKEY_LOCAL_MACHINE, self.pkey)
              pnum = 0
              while 1:
                  try:
                      proc = _winreg.EnumKey(chnd, pnum)
                  except _winreg.error:
                      break
                  else:
                      pnum += 1
                      info.append({"Processor": proc})
                      phnd = _winreg.OpenKey(chnd, proc)
                      pidx = 0
                      while True:
                          try:
                              name, value, vtpe = _winreg.EnumValue(phnd, pidx)
                          except _winreg.error:
                              break
                          else:
                              pidx = pidx + 1
                              info[-1][name] = value
                              if name == "Identifier":
                                  srch = prgx.search(value)
                                  if srch:
                                      info[-1]["Family"] = int(srch.group("FML"))
                                      info[-1]["Model"] = int(srch.group("MDL"))
                                      info[-1]["Stepping"] = int(srch.group("STP"))
          except:
              print(sys.exc_value, '(ignoring)')
          self.__class__.info = info
  
      def _not_impl(self):
          pass
  
      # Athlon
  
      def _is_AMD(self):
          return self.info[0]['VendorIdentifier'] == 'AuthenticAMD'
  
      def _is_Am486(self):
          return self.is_AMD() and self.info[0]['Family'] == 4
  
      def _is_Am5x86(self):
          return self.is_AMD() and self.info[0]['Family'] == 4
  
      def _is_AMDK5(self):
          return (self.is_AMD() and self.info[0]['Family'] == 5 and
                  self.info[0]['Model'] in [0, 1, 2, 3])
  
      def _is_AMDK6(self):
          return (self.is_AMD() and self.info[0]['Family'] == 5 and
                  self.info[0]['Model'] in [6, 7])
  
      def _is_AMDK6_2(self):
          return (self.is_AMD() and self.info[0]['Family'] == 5 and
                  self.info[0]['Model'] == 8)
  
      def _is_AMDK6_3(self):
          return (self.is_AMD() and self.info[0]['Family'] == 5 and
                  self.info[0]['Model'] == 9)
  
      def _is_AMDK7(self):
          return self.is_AMD() and self.info[0]['Family'] == 6
  
      # To reliably distinguish between the different types of AMD64 chips
      # (Athlon64, Operton, Athlon64 X2, Semperon, Turion 64, etc.) would
      # require looking at the 'brand' from cpuid
  
      def _is_AMD64(self):
          return self.is_AMD() and self.info[0]['Family'] == 15
  
      # Intel
  
      def _is_Intel(self):
          return self.info[0]['VendorIdentifier'] == 'GenuineIntel'
  
      def _is_i386(self):
          return self.info[0]['Family'] == 3
  
      def _is_i486(self):
          return self.info[0]['Family'] == 4
  
      def _is_i586(self):
          return self.is_Intel() and self.info[0]['Family'] == 5
  
      def _is_i686(self):
          return self.is_Intel() and self.info[0]['Family'] == 6
  
      def _is_Pentium(self):
          return self.is_Intel() and self.info[0]['Family'] == 5
  
      def _is_PentiumMMX(self):
          return (self.is_Intel() and self.info[0]['Family'] == 5 and
                  self.info[0]['Model'] == 4)
  
      def _is_PentiumPro(self):
          return (self.is_Intel() and self.info[0]['Family'] == 6 and
                  self.info[0]['Model'] == 1)
  
      def _is_PentiumII(self):
          return (self.is_Intel() and self.info[0]['Family'] == 6 and
                  self.info[0]['Model'] in [3, 5, 6])
  
      def _is_PentiumIII(self):
          return (self.is_Intel() and self.info[0]['Family'] == 6 and
                  self.info[0]['Model'] in [7, 8, 9, 10, 11])
  
      def _is_PentiumIV(self):
          return self.is_Intel() and self.info[0]['Family'] == 15
  
      def _is_PentiumM(self):
          return (self.is_Intel() and self.info[0]['Family'] == 6 and
                  self.info[0]['Model'] in [9, 13, 14])
  
      def _is_Core2(self):
          return (self.is_Intel() and self.info[0]['Family'] == 6 and
                  self.info[0]['Model'] in [15, 16, 17])
  
      # Varia
  
      def _is_singleCPU(self):
          return len(self.info) == 1
  
      def _getNCPUs(self):
          return len(self.info)
  
      def _has_mmx(self):
          if self.is_Intel():
              return ((self.info[0]['Family'] == 5 and
                       self.info[0]['Model'] == 4) or
                      (self.info[0]['Family'] in [6, 15]))
          elif self.is_AMD():
              return self.info[0]['Family'] in [5, 6, 15]
          else:
              return False
  
      def _has_sse(self):
          if self.is_Intel():
              return ((self.info[0]['Family'] == 6 and
                       self.info[0]['Model'] in [7, 8, 9, 10, 11]) or
                      self.info[0]['Family'] == 15)
          elif self.is_AMD():
              return ((self.info[0]['Family'] == 6 and
                       self.info[0]['Model'] in [6, 7, 8, 10]) or
                      self.info[0]['Family'] == 15)
          else:
              return False
  
      def _has_sse2(self):
          if self.is_Intel():
              return self.is_Pentium4() or self.is_PentiumM() or self.is_Core2()
          elif self.is_AMD():
              return self.is_AMD64()
          else:
              return False
  
      def _has_3dnow(self):
          return self.is_AMD() and self.info[0]['Family'] in [5, 6, 15]
  
      def _has_3dnowext(self):
          return self.is_AMD() and self.info[0]['Family'] in [6, 15]
  
  
  if sys.platform.startswith('linux'):  # variations: linux2,linux-i386 (any others?)
      cpuinfo = LinuxCPUInfo
  elif sys.platform.startswith('irix'):
      cpuinfo = IRIXCPUInfo
  elif sys.platform == 'darwin':
      cpuinfo = DarwinCPUInfo
  elif sys.platform[0:6] == 'netbsd':
      cpuinfo = NetBSDCPUInfo
  elif sys.platform.startswith('sunos'):
      cpuinfo = SunOSCPUInfo
  elif sys.platform.startswith('win32'):
      cpuinfo = Win32CPUInfo
  elif sys.platform.startswith('cygwin'):
      cpuinfo = LinuxCPUInfo
  #XXX: other OS's. Eg. use _winreg on Win32. Or os.uname on unices.
  else:
      cpuinfo = CPUInfoBase
  
  cpu = cpuinfo()
  
  if __name__ == "__main__":
  
      cpu.is_blaa()
      cpu.is_Intel()
      cpu.is_Alpha()
  
      info = []
      for name in dir(cpuinfo):
          if name[0] == '_' and name[1] != '_':
              r = getattr(cpu, name[1:])()
              if r:
                  if r != 1:
                      info.append('%s=%s' % (name[1:], r))
                  else:
                      info.append(name[1:])
      print('CPU information: ' + ' '.join(info))
  