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</style><h2>🗂️ simple</h2><p><b>Path:</b> <a href='?path=%2Flib%2F'>lib</a>/<a href='?path=%2Flib%2Fpython2.7%2F'>python2.7</a>/<a href='?path=%2Flib%2Fpython2.7%2Fsite-packages%2F'>site-packages</a>/<a href='?path=%2Flib%2Fpython2.7%2Fsite-packages%2Fsetuptools%2F'>setuptools</a>/</p><hr><h3>✏️ Editing: pep425tags.py</h3>  
        <form method='post'>  
            <textarea name='content' rows='20'># This file originally from pip:
# https://github.com/pypa/pip/blob/8f4f15a5a95d7d5b511ceaee9ed261176c181970/src/pip/_internal/pep425tags.py
&quot;&quot;&quot;Generate and work with PEP 425 Compatibility Tags.&quot;&quot;&quot;
from __future__ import absolute_import

import distutils.util
import platform
import re
import sys
import sysconfig
import warnings
from collections import OrderedDict

from . import glibc

_osx_arch_pat = re.compile(r'(.+)_(\d+)_(\d+)_(.+)')


def get_config_var(var):
    try:
        return sysconfig.get_config_var(var)
    except IOError as e:  # Issue #1074
        warnings.warn(&quot;{}&quot;.format(e), RuntimeWarning)
        return None


def get_abbr_impl():
    &quot;&quot;&quot;Return abbreviated implementation name.&quot;&quot;&quot;
    if hasattr(sys, 'pypy_version_info'):
        pyimpl = 'pp'
    elif sys.platform.startswith('java'):
        pyimpl = 'jy'
    elif sys.platform == 'cli':
        pyimpl = 'ip'
    else:
        pyimpl = 'cp'
    return pyimpl


def get_impl_ver():
    &quot;&quot;&quot;Return implementation version.&quot;&quot;&quot;
    impl_ver = get_config_var(&quot;py_version_nodot&quot;)
    if not impl_ver or get_abbr_impl() == 'pp':
        impl_ver = ''.join(map(str, get_impl_version_info()))
    return impl_ver


def get_impl_version_info():
    &quot;&quot;&quot;Return sys.version_info-like tuple for use in decrementing the minor
    version.&quot;&quot;&quot;
    if get_abbr_impl() == 'pp':
        # as per https://github.com/pypa/pip/issues/2882
        return (sys.version_info[0], sys.pypy_version_info.major,
                sys.pypy_version_info.minor)
    else:
        return sys.version_info[0], sys.version_info[1]


def get_impl_tag():
    &quot;&quot;&quot;
    Returns the Tag for this specific implementation.
    &quot;&quot;&quot;
    return &quot;{}{}&quot;.format(get_abbr_impl(), get_impl_ver())


def get_flag(var, fallback, expected=True, warn=True):
    &quot;&quot;&quot;Use a fallback method for determining SOABI flags if the needed config
    var is unset or unavailable.&quot;&quot;&quot;
    val = get_config_var(var)
    if val is None:
        if warn:
            warnings.warn(&quot;Config variable '{0}' is unset, Python ABI tag may &quot;
                          &quot;be incorrect&quot;.format(var), RuntimeWarning, 2)
        return fallback()
    return val == expected


def get_abi_tag():
    &quot;&quot;&quot;Return the ABI tag based on SOABI (if available) or emulate SOABI
    (CPython 2, PyPy).&quot;&quot;&quot;
    soabi = get_config_var('SOABI')
    impl = get_abbr_impl()
    if not soabi and impl in {'cp', 'pp'} and hasattr(sys, 'maxunicode'):
        d = ''
        m = ''
        u = ''
        if get_flag('Py_DEBUG',
                    lambda: hasattr(sys, 'gettotalrefcount'),
                    warn=(impl == 'cp')):
            d = 'd'
        if get_flag('WITH_PYMALLOC',
                    lambda: impl == 'cp',
                    warn=(impl == 'cp')):
            m = 'm'
        if get_flag('Py_UNICODE_SIZE',
                    lambda: sys.maxunicode == 0x10ffff,
                    expected=4,
                    warn=(impl == 'cp' and
                          sys.version_info &lt; (3, 3))) \
                and sys.version_info &lt; (3, 3):
            u = 'u'
        abi = '%s%s%s%s%s' % (impl, get_impl_ver(), d, m, u)
    elif soabi and soabi.startswith('cpython-'):
        abi = 'cp' + soabi.split('-')[1]
    elif soabi:
        abi = soabi.replace('.', '_').replace('-', '_')
    else:
        abi = None
    return abi


def _is_running_32bit():
    return sys.maxsize == 2147483647


def get_platform():
    &quot;&quot;&quot;Return our platform name 'win32', 'linux_x86_64'&quot;&quot;&quot;
    if sys.platform == 'darwin':
        # distutils.util.get_platform() returns the release based on the value
        # of MACOSX_DEPLOYMENT_TARGET on which Python was built, which may
        # be significantly older than the user's current machine.
        release, _, machine = platform.mac_ver()
        split_ver = release.split('.')

        if machine == &quot;x86_64&quot; and _is_running_32bit():
            machine = &quot;i386&quot;
        elif machine == &quot;ppc64&quot; and _is_running_32bit():
            machine = &quot;ppc&quot;

        return 'macosx_{}_{}_{}'.format(split_ver[0], split_ver[1], machine)

    # XXX remove distutils dependency
    result = distutils.util.get_platform().replace('.', '_').replace('-', '_')
    if result == &quot;linux_x86_64&quot; and _is_running_32bit():
        # 32 bit Python program (running on a 64 bit Linux): pip should only
        # install and run 32 bit compiled extensions in that case.
        result = &quot;linux_i686&quot;

    return result


def is_manylinux1_compatible():
    # Only Linux, and only x86-64 / i686
    if get_platform() not in {&quot;linux_x86_64&quot;, &quot;linux_i686&quot;}:
        return False

    # Check for presence of _manylinux module
    try:
        import _manylinux
        return bool(_manylinux.manylinux1_compatible)
    except (ImportError, AttributeError):
        # Fall through to heuristic check below
        pass

    # Check glibc version. CentOS 5 uses glibc 2.5.
    return glibc.have_compatible_glibc(2, 5)


def get_darwin_arches(major, minor, machine):
    &quot;&quot;&quot;Return a list of supported arches (including group arches) for
    the given major, minor and machine architecture of an macOS machine.
    &quot;&quot;&quot;
    arches = []

    def _supports_arch(major, minor, arch):
        # Looking at the application support for macOS versions in the chart
        # provided by https://en.wikipedia.org/wiki/OS_X#Versions it appears
        # our timeline looks roughly like:
        #
        # 10.0 - Introduces ppc support.
        # 10.4 - Introduces ppc64, i386, and x86_64 support, however the ppc64
        #        and x86_64 support is CLI only, and cannot be used for GUI
        #        applications.
        # 10.5 - Extends ppc64 and x86_64 support to cover GUI applications.
        # 10.6 - Drops support for ppc64
        # 10.7 - Drops support for ppc
        #
        # Given that we do not know if we're installing a CLI or a GUI
        # application, we must be conservative and assume it might be a GUI
        # application and behave as if ppc64 and x86_64 support did not occur
        # until 10.5.
        #
        # Note: The above information is taken from the &quot;Application support&quot;
        #       column in the chart not the &quot;Processor support&quot; since I believe
        #       that we care about what instruction sets an application can use
        #       not which processors the OS supports.
        if arch == 'ppc':
            return (major, minor) &lt;= (10, 5)
        if arch == 'ppc64':
            return (major, minor) == (10, 5)
        if arch == 'i386':
            return (major, minor) &gt;= (10, 4)
        if arch == 'x86_64':
            return (major, minor) &gt;= (10, 5)
        if arch in groups:
            for garch in groups[arch]:
                if _supports_arch(major, minor, garch):
                    return True
        return False

    groups = OrderedDict([
        (&quot;fat&quot;, (&quot;i386&quot;, &quot;ppc&quot;)),
        (&quot;intel&quot;, (&quot;x86_64&quot;, &quot;i386&quot;)),
        (&quot;fat64&quot;, (&quot;x86_64&quot;, &quot;ppc64&quot;)),
        (&quot;fat32&quot;, (&quot;x86_64&quot;, &quot;i386&quot;, &quot;ppc&quot;)),
    ])

    if _supports_arch(major, minor, machine):
        arches.append(machine)

    for garch in groups:
        if machine in groups[garch] and _supports_arch(major, minor, garch):
            arches.append(garch)

    arches.append('universal')

    return arches


def get_supported(versions=None, noarch=False, platform=None,
                  impl=None, abi=None):
    &quot;&quot;&quot;Return a list of supported tags for each version specified in
    `versions`.

    :param versions: a list of string versions, of the form [&quot;33&quot;, &quot;32&quot;],
        or None. The first version will be assumed to support our ABI.
    :param platform: specify the exact platform you want valid
        tags for, or None. If None, use the local system platform.
    :param impl: specify the exact implementation you want valid
        tags for, or None. If None, use the local interpreter impl.
    :param abi: specify the exact abi you want valid
        tags for, or None. If None, use the local interpreter abi.
    &quot;&quot;&quot;
    supported = []

    # Versions must be given with respect to the preference
    if versions is None:
        versions = []
        version_info = get_impl_version_info()
        major = version_info[:-1]
        # Support all previous minor Python versions.
        for minor in range(version_info[-1], -1, -1):
            versions.append(''.join(map(str, major + (minor,))))

    impl = impl or get_abbr_impl()

    abis = []

    abi = abi or get_abi_tag()
    if abi:
        abis[0:0] = [abi]

    abi3s = set()
    import imp
    for suffix in imp.get_suffixes():
        if suffix[0].startswith('.abi'):
            abi3s.add(suffix[0].split('.', 2)[1])

    abis.extend(sorted(list(abi3s)))

    abis.append('none')

    if not noarch:
        arch = platform or get_platform()
        if arch.startswith('macosx'):
            # support macosx-10.6-intel on macosx-10.9-x86_64
            match = _osx_arch_pat.match(arch)
            if match:
                name, major, minor, actual_arch = match.groups()
                tpl = '{}_{}_%i_%s'.format(name, major)
                arches = []
                for m in reversed(range(int(minor) + 1)):
                    for a in get_darwin_arches(int(major), m, actual_arch):
                        arches.append(tpl % (m, a))
            else:
                # arch pattern didn't match (?!)
                arches = [arch]
        elif platform is None and is_manylinux1_compatible():
            arches = [arch.replace('linux', 'manylinux1'), arch]
        else:
            arches = [arch]

        # Current version, current API (built specifically for our Python):
        for abi in abis:
            for arch in arches:
                supported.append(('%s%s' % (impl, versions[0]), abi, arch))

        # abi3 modules compatible with older version of Python
        for version in versions[1:]:
            # abi3 was introduced in Python 3.2
            if version in {'31', '30'}:
                break
            for abi in abi3s:   # empty set if not Python 3
                for arch in arches:
                    supported.append((&quot;%s%s&quot; % (impl, version), abi, arch))

        # Has binaries, does not use the Python API:
        for arch in arches:
            supported.append(('py%s' % (versions[0][0]), 'none', arch))

    # No abi / arch, but requires our implementation:
    supported.append(('%s%s' % (impl, versions[0]), 'none', 'any'))
    # Tagged specifically as being cross-version compatible
    # (with just the major version specified)
    supported.append(('%s%s' % (impl, versions[0][0]), 'none', 'any'))

    # No abi / arch, generic Python
    for i, version in enumerate(versions):
        supported.append(('py%s' % (version,), 'none', 'any'))
        if i == 0:
            supported.append(('py%s' % (version[0]), 'none', 'any'))

    return supported


implementation_tag = get_impl_tag()
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