Python sys.real_prefix() Examples

def run(self, *args, **kwargs):
        func = kwargs.pop("func", Argv.get_output)
        kwargs.setdefault("stdin", DEVNULL)
        kwargs['env'] = deepcopy(os.environ)
        if 'VIRTUAL_ENV' in kwargs['env'] or 'CONDA_PREFIX' in kwargs['env']:
            kwargs['env'].pop('VIRTUAL_ENV', None)
            kwargs['env'].pop('CONDA_PREFIX', None)
            kwargs['env'].pop('PYTHONPATH', None)
            if hasattr(sys, "real_prefix") and hasattr(sys, "base_prefix"):
                path = ':'+kwargs['env']['PATH']
                path = path.replace(':'+sys.base_prefix, ':'+sys.real_prefix, 1)
                kwargs['env']['PATH'] = path

        if check_if_command_exists("poetry"):
            argv = Argv("poetry", *args)
        else:
            argv = Argv(self._python, "-m", "poetry", *args)
        self.log.debug("running: %s", argv)
        return func(argv, **kwargs) 

def pydeps2reqs(deps):
    """Convert a deps instance into requirements.
    """
    reqs = defaultdict(set)
    for k, v in list(deps.items()):
        # not a built-in
        p = v['path']
        if p and not p.startswith(sys.real_prefix):
            if p.startswith(sys.prefix) and 'site-packages' in p:
                if not p.endswith('.pyd'):
                    if '/win32/' in p.replace('\\', '/'):
                        reqs['win32'] |= set(v['imported_by'])
                    else:
                        name = k.split('.', 1)[0]
                        if name not in skiplist:
                            reqs[name] |= set(v['imported_by'])

    if '_dummy' in reqs:
        del reqs['_dummy']
    return '\n'.join(dep2req(name, reqs[name]) for name in sorted(reqs)) 

def _find_config_dir(self, config_dir):
        # Look for config in the virtual environment
        # virtualenv puts the original prefix in sys.real_prefix
        # pyenv puts it in sys.base_prefix
        venv_d = os.path.join(sys.prefix, 'etc/a10')
        has_prefix = (hasattr(sys, 'real_prefix') or hasattr(sys, 'base_prefix'))

        env_override = os.environ.get('A10_CONFIG_DIR', None)
        if config_dir is not None:
            d = config_dir
        elif env_override is not None:
            d = env_override
        elif has_prefix and os.path.exists(venv_d):
            d = venv_d
        elif os.path.exists('/etc/neutron/services/loadbalancer/a10networks'):
            d = '/etc/neutron/services/loadbalancer/a10networks'
        else:
            d = '/etc/a10'

        return d 

def sysconfig_get_config_vars(*args):
    real_vars = old_get_config_vars(*args)
    if sys.platform == 'win32':
        lib_dir = os.path.join(sys.real_prefix, "libs")
        if isinstance(real_vars, dict) and 'LIBDIR' not in real_vars:
            real_vars['LIBDIR'] = lib_dir # asked for all
        elif isinstance(real_vars, list) and 'LIBDIR' in args:
            real_vars = real_vars + [lib_dir] # asked for list
    return real_vars 

def finalize_options (self):
            if self.library_dirs is None:
                self.library_dirs = []
            elif isinstance(self.library_dirs, basestring):
                self.library_dirs = self.library_dirs.split(os.pathsep)
            
            self.library_dirs.insert(0, os.path.join(sys.real_prefix, "Libs"))
            old_build_ext.finalize_options(self) 

def sysconfig_get_python_lib(plat_specific=0, standard_lib=0, prefix=None):
    if standard_lib and prefix is None:
        prefix = sys.real_prefix
    return old_get_python_lib(plat_specific, standard_lib, prefix) 

def sysconfig_get_python_inc(plat_specific=0, prefix=None):
    if prefix is None:
        prefix = sys.real_prefix
    return old_get_python_inc(plat_specific, prefix) 

def create_apidoc(_):
    """A workaround for running sphinx-apidoc on Read the Docs.
    """

    if hasattr(sys, 'real_prefix'):
        # In a virtualenv sys.prefix points to the virtualenv directory and
        # sys.real_prefix points to the system prefix.
        cmd = path.abspath(path.join(sys.prefix, 'bin', 'sphinx-apidoc'))
    else:
        cmd = 'sphinx-apidoc'
    environ['SPHINX_APIDOC_OPTIONS'] = \
        'members,special-members,private-members,undoc-members,show-inheritance'
    subprocess.check_call(
        [cmd, '--force', '--no-toc', '-o', docs_dir, root_dir, setup_path,
         tests_dir]) 

def virtual_addsitepackages(known_paths):
    force_global_eggs_after_local_site_packages()
    return addsitepackages(known_paths, sys_prefix=sys.real_prefix) 

def sysconfig_get_python_lib(plat_specific=0, standard_lib=0, prefix=None):
    if standard_lib and prefix is None:
        prefix = sys.real_prefix
    return old_get_python_lib(plat_specific, standard_lib, prefix) 

def sysconfig_get_python_inc(plat_specific=0, prefix=None):
    if prefix is None:
        prefix = sys.real_prefix
    return old_get_python_inc(plat_specific, prefix) 

def setup_detect_python2():
        """
        Call this before using the refactoring tools to create them on demand
        if needed.
        """
        if None in [RTs._rt_py2_detect, RTs._rtp_py2_detect]:
            RTs._rt_py2_detect = RefactoringTool(py2_detect_fixers)
            RTs._rtp_py2_detect = RefactoringTool(py2_detect_fixers,
                                                  {'print_function': True})


# We need to find a prefix for the standard library, as we don't want to
# process any files there (they will already be Python 3).
#
# The following method is used by Sanjay Vinip in uprefix. This fails for
# ``conda`` environments:
#     # In a non-pythonv virtualenv, sys.real_prefix points to the installed Python.
#     # In a pythonv venv, sys.base_prefix points to the installed Python.
#     # Outside a virtual environment, sys.prefix points to the installed Python.

#     if hasattr(sys, 'real_prefix'):
#         _syslibprefix = sys.real_prefix
#     else:
#         _syslibprefix = getattr(sys, 'base_prefix', sys.prefix)

# Instead, we use the portion of the path common to both the stdlib modules
# ``math`` and ``urllib``. 

def sysconfig_get_python_inc(plat_specific=0, prefix=None):
    if prefix is None:
        prefix = sys.real_prefix
    return old_get_python_inc(plat_specific, prefix) 

def finalize_options (self):
            if self.library_dirs is None:
                self.library_dirs = []
            elif isinstance(self.library_dirs, basestring):
                self.library_dirs = self.library_dirs.split(os.pathsep)
            
            self.library_dirs.insert(0, os.path.join(sys.real_prefix, "Libs"))
            old_build_ext.finalize_options(self) 

def setup_detect_python2():
        """
        Call this before using the refactoring tools to create them on demand
        if needed.
        """
        if None in [RTs._rt_py2_detect, RTs._rtp_py2_detect]:
            RTs._rt_py2_detect = RefactoringTool(py2_detect_fixers)
            RTs._rtp_py2_detect = RefactoringTool(py2_detect_fixers,
                                                  {'print_function': True})


# We need to find a prefix for the standard library, as we don't want to
# process any files there (they will already be Python 3).
#
# The following method is used by Sanjay Vinip in uprefix. This fails for
# ``conda`` environments:
#     # In a non-pythonv virtualenv, sys.real_prefix points to the installed Python.
#     # In a pythonv venv, sys.base_prefix points to the installed Python.
#     # Outside a virtual environment, sys.prefix points to the installed Python.

#     if hasattr(sys, 'real_prefix'):
#         _syslibprefix = sys.real_prefix
#     else:
#         _syslibprefix = getattr(sys, 'base_prefix', sys.prefix)

# Instead, we use the portion of the path common to both the stdlib modules
# ``math`` and ``urllib``. 

def virtual_addsitepackages(known_paths):
    force_global_eggs_after_local_site_packages()
    return addsitepackages(known_paths, sys_prefix=sys.real_prefix) 

def sysconfig_get_config_vars(*args):
    real_vars = old_get_config_vars(*args)
    if sys.platform == 'win32':
        lib_dir = os.path.join(sys.real_prefix, "libs")
        if isinstance(real_vars, dict) and 'LIBDIR' not in real_vars:
            real_vars['LIBDIR'] = lib_dir # asked for all
        elif isinstance(real_vars, list) and 'LIBDIR' in args:
            real_vars = real_vars + [lib_dir] # asked for list
    return real_vars 

def sysconfig_get_python_lib(plat_specific=0, standard_lib=0, prefix=None):
    if standard_lib and prefix is None:
        prefix = sys.real_prefix
    return old_get_python_lib(plat_specific, standard_lib, prefix) 

def sysconfig_get_python_inc(plat_specific=0, prefix=None):
    if prefix is None:
        prefix = sys.real_prefix
    return old_get_python_inc(plat_specific, prefix) 

def finalize_options (self):
            if self.library_dirs is None:
                self.library_dirs = []
            elif isinstance(self.library_dirs, basestring):
                self.library_dirs = self.library_dirs.split(os.pathsep)
            
            self.library_dirs.insert(0, os.path.join(sys.real_prefix, "Libs"))
            old_build_ext.finalize_options(self) 

def _check_for_import_lib():
    """Check if an import library for the Python runtime already exists."""
    major_version, minor_version = tuple(sys.version_info[:2])

    # patterns for the file name of the library itself
    patterns = ['libpython%d%d.a',
                'libpython%d%d.dll.a',
                'libpython%d.%d.dll.a']

    # directory trees that may contain the library
    stems = [sys.prefix]
    if hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix:
        stems.append(sys.base_prefix)
    elif hasattr(sys, 'real_prefix') and sys.real_prefix != sys.prefix:
        stems.append(sys.real_prefix)

    # possible subdirectories within those trees where it is placed
    sub_dirs = ['libs', 'lib']

    # generate a list of candidate locations
    candidates = []
    for pat in patterns:
        filename = pat % (major_version, minor_version)
        for stem_dir in stems:
            for folder in sub_dirs:
                candidates.append(os.path.join(stem_dir, folder, filename))

    # test the filesystem to see if we can find any of these
    for fullname in candidates:
        if os.path.isfile(fullname):
            # already exists, in location given
            return (True, fullname)

    # needs to be built, preferred location given first
    return (False, candidates[0]) 

def find_python_dll():
    # We can't do much here:
    # - find it in the virtualenv (sys.prefix)
    # - find it in python main dir (sys.base_prefix, if in a virtualenv)
    # - sys.real_prefix is main dir for virtualenvs in Python 2.7
    # - in system32,
    # - ortherwise (Sxs), I don't know how to get it.
    stems = [sys.prefix]
    if hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix:
        stems.append(sys.base_prefix)
    elif hasattr(sys, 'real_prefix') and sys.real_prefix != sys.prefix:
        stems.append(sys.real_prefix)

    sub_dirs = ['', 'lib', 'bin']
    # generate possible combinations of directory trees and sub-directories
    lib_dirs = []
    for stem in stems:
        for folder in sub_dirs:
            lib_dirs.append(os.path.join(stem, folder))

    # add system directory as well
    if 'SYSTEMROOT' in os.environ:
        lib_dirs.append(os.path.join(os.environ['SYSTEMROOT'], 'System32'))

    # search in the file system for possible candidates
    major_version, minor_version = tuple(sys.version_info[:2])
    patterns = ['python%d%d.dll']

    for pat in patterns:
        dllname = pat % (major_version, minor_version)
        print("Looking for %s" % dllname)
        for folder in lib_dirs:
            dll = os.path.join(folder, dllname)
            if os.path.exists(dll):
                return dll

    raise ValueError("%s not found in %s" % (dllname, lib_dirs)) 

def _check_for_import_lib():
    """Check if an import library for the Python runtime already exists."""
    major_version, minor_version = tuple(sys.version_info[:2])

    # patterns for the file name of the library itself
    patterns = ['libpython%d%d.a',
                'libpython%d%d.dll.a',
                'libpython%d.%d.dll.a']

    # directory trees that may contain the library
    stems = [sys.prefix]
    if hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix:
        stems.append(sys.base_prefix)
    elif hasattr(sys, 'real_prefix') and sys.real_prefix != sys.prefix:
        stems.append(sys.real_prefix)

    # possible subdirectories within those trees where it is placed
    sub_dirs = ['libs', 'lib']

    # generate a list of candidate locations
    candidates = []
    for pat in patterns:
        filename = pat % (major_version, minor_version)
        for stem_dir in stems:
            for folder in sub_dirs:
                candidates.append(os.path.join(stem_dir, folder, filename))

    # test the filesystem to see if we can find any of these
    for fullname in candidates:
        if os.path.isfile(fullname):
            # already exists, in location given
            return (True, fullname)

    # needs to be built, preferred location given first
    return (False, candidates[0]) 

def find_python_dll():
    # We can't do much here:
    # - find it in the virtualenv (sys.prefix)
    # - find it in python main dir (sys.base_prefix, if in a virtualenv)
    # - sys.real_prefix is main dir for virtualenvs in Python 2.7
    # - in system32,
    # - ortherwise (Sxs), I don't know how to get it.
    stems = [sys.prefix]
    if hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix:
        stems.append(sys.base_prefix)
    elif hasattr(sys, 'real_prefix') and sys.real_prefix != sys.prefix:
        stems.append(sys.real_prefix)

    sub_dirs = ['', 'lib', 'bin']
    # generate possible combinations of directory trees and sub-directories
    lib_dirs = []
    for stem in stems:
        for folder in sub_dirs:
            lib_dirs.append(os.path.join(stem, folder))

    # add system directory as well
    if 'SYSTEMROOT' in os.environ:
        lib_dirs.append(os.path.join(os.environ['SYSTEMROOT'], 'System32'))

    # search in the file system for possible candidates
    major_version, minor_version = tuple(sys.version_info[:2])
    patterns = ['python%d%d.dll']

    for pat in patterns:
        dllname = pat % (major_version, minor_version)
        print("Looking for %s" % dllname)
        for folder in lib_dirs:
            dll = os.path.join(folder, dllname)
            if os.path.exists(dll):
                return dll

    raise ValueError("%s not found in %s" % (dllname, lib_dirs)) 

def virtual_addsitepackages(known_paths):
    force_global_eggs_after_local_site_packages()
    return addsitepackages(known_paths, sys_prefix=sys.real_prefix) 

def sysconfig_get_python_lib(plat_specific=0, standard_lib=0, prefix=None):
    if standard_lib and prefix is None:
        prefix = sys.real_prefix
    return old_get_python_lib(plat_specific, standard_lib, prefix) 

def sysconfig_get_python_inc(plat_specific=0, prefix=None):
    if prefix is None:
        prefix = sys.real_prefix
    return old_get_python_inc(plat_specific, prefix) 

def finalize_options (self):
            if self.library_dirs is None:
                self.library_dirs = []
            elif isinstance(self.library_dirs, basestring):
                self.library_dirs = self.library_dirs.split(os.pathsep)
            
            self.library_dirs.insert(0, os.path.join(sys.real_prefix, "Libs"))
            old_build_ext.finalize_options(self) 

def _check_for_import_lib():
    """Check if an import library for the Python runtime already exists."""
    major_version, minor_version = tuple(sys.version_info[:2])

    # patterns for the file name of the library itself
    patterns = ['libpython%d%d.a',
                'libpython%d%d.dll.a',
                'libpython%d.%d.dll.a']

    # directory trees that may contain the library
    stems = [sys.prefix]
    if hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix:
        stems.append(sys.base_prefix)
    elif hasattr(sys, 'real_prefix') and sys.real_prefix != sys.prefix:
        stems.append(sys.real_prefix)

    # possible subdirectories within those trees where it is placed
    sub_dirs = ['libs', 'lib']

    # generate a list of candidate locations
    candidates = []
    for pat in patterns:
        filename = pat % (major_version, minor_version)
        for stem_dir in stems:
            for folder in sub_dirs:
                candidates.append(os.path.join(stem_dir, folder, filename))

    # test the filesystem to see if we can find any of these
    for fullname in candidates:
        if os.path.isfile(fullname):
            # already exists, in location given
            return (True, fullname)

    # needs to be built, preferred location given first
    return (False, candidates[0]) 

def find_python_dll():
    # We can't do much here:
    # - find it in the virtualenv (sys.prefix)
    # - find it in python main dir (sys.base_prefix, if in a virtualenv)
    # - sys.real_prefix is main dir for virtualenvs in Python 2.7
    # - in system32,
    # - ortherwise (Sxs), I don't know how to get it.
    stems = [sys.prefix]
    if hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix:
        stems.append(sys.base_prefix)
    elif hasattr(sys, 'real_prefix') and sys.real_prefix != sys.prefix:
        stems.append(sys.real_prefix)

    sub_dirs = ['', 'lib', 'bin']
    # generate possible combinations of directory trees and sub-directories
    lib_dirs = []
    for stem in stems:
        for folder in sub_dirs:
            lib_dirs.append(os.path.join(stem, folder))

    # add system directory as well
    if 'SYSTEMROOT' in os.environ:
        lib_dirs.append(os.path.join(os.environ['SYSTEMROOT'], 'System32'))

    # search in the file system for possible candidates
    major_version, minor_version = tuple(sys.version_info[:2])
    patterns = ['python%d%d.dll']

    for pat in patterns:
        dllname = pat % (major_version, minor_version)
        print("Looking for %s" % dllname)
        for folder in lib_dirs:
            dll = os.path.join(folder, dllname)
            if os.path.exists(dll):
                return dll

    raise ValueError("%s not found in %s" % (dllname, lib_dirs))