Python os.altsep() Examples

def pickaddr(self, proto):
        if proto == socket.AF_INET:
            return (HOST, 0)
        else:
            # XXX: We need a way to tell AF_UNIX to pick its own name
            # like AF_INET provides port==0.
            dir = None
            if os.name == 'os2':
                dir = '\socket'
            fn = tempfile.mktemp(prefix='unix_socket.', dir=dir)
            if os.name == 'os2':
                # AF_UNIX socket names on OS/2 require a specific prefix
                # which can't include a drive letter and must also use
                # backslashes as directory separators
                if fn[1] == ':':
                    fn = fn[2:]
                if fn[0] in (os.sep, os.altsep):
                    fn = fn[1:]
                if os.sep == '/':
                    fn = fn.replace(os.sep, os.altsep)
                else:
                    fn = fn.replace(os.altsep, os.sep)
            self.test_files.append(fn)
            return fn 

def pickaddr(self, proto):
        if proto == socket.AF_INET:
            return (HOST, 0)
        else:
            # XXX: We need a way to tell AF_UNIX to pick its own name
            # like AF_INET provides port==0.
            dir = None
            if os.name == 'os2':
                dir = '\socket'
            fn = tempfile.mktemp(prefix='unix_socket.', dir=dir)
            if os.name == 'os2':
                # AF_UNIX socket names on OS/2 require a specific prefix
                # which can't include a drive letter and must also use
                # backslashes as directory separators
                if fn[1] == ':':
                    fn = fn[2:]
                if fn[0] in (os.sep, os.altsep):
                    fn = fn[1:]
                if os.sep == '/':
                    fn = fn.replace(os.sep, os.altsep)
                else:
                    fn = fn.replace(os.altsep, os.sep)
            self.test_files.append(fn)
            return fn 

def refresh(self):
        """
        Update the internal module list to reflect the state of files on disk
        """
        self.modules.clear()
        module_files = []
        module_paths = os.environ['MAYA_MODULE_PATH'].split(os.pathsep)
        for p in module_paths:
            try:
                module_files += [os.path.join(p, x).replace(os.sep, os.altsep or os.sep) for x in os.listdir(p) if
                                 x.lower()[-3:] == "mod"]
            except OSError:
                pass  # ignore bad paths
        for eachfile in module_files:
            for eachmod in self.parse_mod(eachfile):
                self.modules["{0.name} ({0.version})".format(eachmod)] = eachmod 

def pickaddr(self, proto):
        if proto == socket.AF_INET:
            return (HOST, 0)
        else:
            # XXX: We need a way to tell AF_UNIX to pick its own name
            # like AF_INET provides port==0.
            dir = None
            if os.name == 'os2':
                dir = '\socket'
            fn = tempfile.mktemp(prefix='unix_socket.', dir=dir)
            if os.name == 'os2':
                # AF_UNIX socket names on OS/2 require a specific prefix
                # which can't include a drive letter and must also use
                # backslashes as directory separators
                if fn[1] == ':':
                    fn = fn[2:]
                if fn[0] in (os.sep, os.altsep):
                    fn = fn[1:]
                if os.sep == '/':
                    fn = fn.replace(os.sep, os.altsep)
                else:
                    fn = fn.replace(os.altsep, os.sep)
            self.test_files.append(fn)
            return fn 

def _extract_member(self, member, targetpath, pwd):
        """Extract the ZipInfo object 'member' to a physical
           file on the path targetpath.
        """
        # build the destination pathname, replacing
        # forward slashes to platform specific separators.
        arcname = member.filename.replace('/', os.path.sep)

        if os.path.altsep:
            arcname = arcname.replace(os.path.altsep, os.path.sep)
        # interpret absolute pathname as relative, remove drive letter or
        # UNC path, redundant separators, "." and ".." components.
        arcname = os.path.splitdrive(arcname)[1]
        invalid_path_parts = ('', os.path.curdir, os.path.pardir)
        arcname = os.path.sep.join(x for x in arcname.split(os.path.sep)
                                   if x not in invalid_path_parts)
        if os.path.sep == '\\':
            # filter illegal characters on Windows
            arcname = self._sanitize_windows_name(arcname, os.path.sep)

        targetpath = os.path.join(targetpath, arcname)
        targetpath = os.path.normpath(targetpath)

        # Create all upper directories if necessary.
        upperdirs = os.path.dirname(targetpath)
        if upperdirs and not os.path.exists(upperdirs):
            os.makedirs(upperdirs)

        if member.filename[-1] == '/':
            if not os.path.isdir(targetpath):
                os.mkdir(targetpath)
            return targetpath

        with self.open(member, pwd=pwd) as source, \
             open(targetpath, "wb") as target:
            shutil.copyfileobj(source, target)

        return targetpath 

def test_sep_altsep_and_sep_cache_from_source(self):
        # Windows path and PEP 3147 where sep is right of altsep.
        self.assertEqual(
            self.util.cache_from_source('\\foo\\bar\\baz/qux.py', optimization=''),
            '\\foo\\bar\\baz\\__pycache__\\qux.{}.pyc'.format(self.tag)) 

def _get_cudadevrt_path():
    global _cudadevrt
    if _cudadevrt is not None:
        return _cudadevrt

    # defer import to here to avoid circular dependency
    from cupy.cuda import get_cuda_path
    global _win32

    cudadevrt = get_cuda_path()
    if cudadevrt is None:
        raise RuntimeError('CUDA is not found.')

    if _win32:
        # rely on os.altsep
        cudadevrt += '/lib/x64/cudadevrt.lib'
    else:  # linux & osx: search twice as in cupy/install/build.py
        cudadevrt64 = cudadevrt + '/lib64/libcudadevrt.a'
        if not os.path.isfile(cudadevrt64):
            cudadevrt += '/lib/libcudadevrt.a'
        else:
            cudadevrt = cudadevrt64
    if not os.path.isfile(cudadevrt):
        raise RuntimeError(
            'Relocatable PTX code is requested, but cudadevrt '
            'is not found.')
    return cudadevrt 

def split_path_first(path, repath=re.compile('[%s]' % re.escape(os.sep + os.altsep))):
        return repath.split(path, 1) 

def test_sep_altsep_and_sep_cache_from_source(self):
        # Windows path and PEP 3147 where sep is right of altsep.
        self.assertEqual(
            self.util.cache_from_source('\\foo\\bar\\baz/qux.py', True),
            '\\foo\\bar\\baz\\__pycache__\\qux.{}.pyc'.format(self.tag)) 

def _fullmodname(path):
    """Return a plausible module name for the path."""

    # If the file 'path' is part of a package, then the filename isn't
    # enough to uniquely identify it.  Try to do the right thing by
    # looking in sys.path for the longest matching prefix.  We'll
    # assume that the rest is the package name.

    comparepath = os.path.normcase(path)
    longest = ""
    for dir in sys.path:
        dir = os.path.normcase(dir)
        if comparepath.startswith(dir) and comparepath[len(dir)] == os.sep:
            if len(dir) > len(longest):
                longest = dir

    if longest:
        base = path[len(longest) + 1:]
    else:
        base = path
    # the drive letter is never part of the module name
    drive, base = os.path.splitdrive(base)
    base = base.replace(os.sep, ".")
    if os.altsep:
        base = base.replace(os.altsep, ".")
    filename, ext = os.path.splitext(base)
    return filename.lstrip(".") 

def test_write_pyfile(self):
        self.requiresWriteAccess(os.path.dirname(__file__))
        with TemporaryFile() as t, zipfile.PyZipFile(t, "w") as zipfp:
            fn = __file__
            if fn.endswith('.pyc'):
                path_split = fn.split(os.sep)
                if os.altsep is not None:
                    path_split.extend(fn.split(os.altsep))
                if '__pycache__' in path_split:
                    fn = importlib.util.source_from_cache(fn)
                else:
                    fn = fn[:-1]

            zipfp.writepy(fn)

            bn = os.path.basename(fn)
            self.assertNotIn(bn, zipfp.namelist())
            self.assertCompiledIn(bn, zipfp.namelist())

        with TemporaryFile() as t, zipfile.PyZipFile(t, "w") as zipfp:
            fn = __file__
            if fn.endswith('.pyc'):
                fn = fn[:-1]

            zipfp.writepy(fn, "testpackage")

            bn = "%s/%s" % ("testpackage", os.path.basename(fn))
            self.assertNotIn(bn, zipfp.namelist())
            self.assertCompiledIn(bn, zipfp.namelist()) 

def test_write_pyfile(self):
        self.requiresWriteAccess(os.path.dirname(__file__))
        with TemporaryFile() as t, zipfile.PyZipFile(t, "w") as zipfp:
            fn = __file__
            if fn.endswith('.pyc') or fn.endswith('.pyo'):
                path_split = fn.split(os.sep)
                if os.altsep is not None:
                    path_split.extend(fn.split(os.altsep))
                if '__pycache__' in path_split:
                    fn = importlib.util.source_from_cache(fn)
                else:
                    fn = fn[:-1]

            zipfp.writepy(fn)

            bn = os.path.basename(fn)
            self.assertNotIn(bn, zipfp.namelist())
            self.assertCompiledIn(bn, zipfp.namelist())

        with TemporaryFile() as t, zipfile.PyZipFile(t, "w") as zipfp:
            fn = __file__
            if fn.endswith(('.pyc', '.pyo')):
                fn = fn[:-1]

            zipfp.writepy(fn, "testpackage")

            bn = "%s/%s" % ("testpackage", os.path.basename(fn))
            self.assertNotIn(bn, zipfp.namelist())
            self.assertCompiledIn(bn, zipfp.namelist()) 

def test_sep_altsep_and_sep_cache_from_source(self):
        # Windows path and PEP 3147 where sep is right of altsep.
        self.assertEqual(
            imp.cache_from_source('\\foo\\bar\\baz/qux.py', True),
            '\\foo\\bar\\baz\\__pycache__\\qux.{}.pyc'.format(self.tag)) 

def call(libname, flag, encoding=sys.getfilesystemencoding()):
    """Calls pkg-config and returns the output if found
    """
    a = ["pkg-config", "--print-errors"]
    a.append(flag)
    a.append(libname)
    try:
        pc = subprocess.Popen(a, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
    except EnvironmentError as e:
        raise PkgConfigError("cannot run pkg-config: %s" % (str(e).strip(),))

    bout, berr = pc.communicate()
    if pc.returncode != 0:
        try:
            berr = berr.decode(encoding)
        except Exception:
            pass
        raise PkgConfigError(berr.strip())

    if sys.version_info >= (3,) and not isinstance(bout, str):   # Python 3.x
        try:
            bout = bout.decode(encoding)
        except UnicodeDecodeError:
            raise PkgConfigError("pkg-config %s %s returned bytes that cannot "
                                 "be decoded with encoding %r:\n%r" %
                                 (flag, libname, encoding, bout))

    if os.altsep != '\\' and '\\' in bout:
        raise PkgConfigError("pkg-config %s %s returned an unsupported "
                             "backslash-escaped output:\n%r" %
                             (flag, libname, bout))
    return bout 

def make_relative(self, path):
        npath, last = os.path.split(normalize_path(path))
        baselen = len(self.basedir)
        parts = [last]
        sep = os.altsep == '/' and '/' or os.sep
        while len(npath) >= baselen:
            if npath == self.basedir:
                parts.append(os.curdir)
                parts.reverse()
                return sep.join(parts)
            npath, last = os.path.split(npath)
            parts.append(last)
        else:
            return path 

def make_relative(self, path):
        npath, last = os.path.split(normalize_path(path))
        baselen = len(self.basedir)
        parts = [last]
        sep = os.altsep == '/' and '/' or os.sep
        while len(npath) >= baselen:
            if npath == self.basedir:
                parts.append(os.curdir)
                parts.reverse()
                return sep.join(parts)
            npath, last = os.path.split(npath)
            parts.append(last)
        else:
            return path 

def set_source(self, module_name, source, source_extension='.c', **kwds):
        import os
        if hasattr(self, '_assigned_source'):
            raise ValueError("set_source() cannot be called several times "
                             "per ffi object")
        if not isinstance(module_name, basestring):
            raise TypeError("'module_name' must be a string")
        if os.sep in module_name or (os.altsep and os.altsep in module_name):
            raise ValueError("'module_name' must not contain '/': use a dotted "
                             "name to make a 'package.module' location")
        self._assigned_source = (str(module_name), source,
                                 source_extension, kwds) 

def from_file(cls, filename, arcname=None):
        """Construct an appropriate ZipInfo for a file on the filesystem.

        filename should be the path to a file or directory on the filesystem.

        arcname is the name which it will have within the archive (by default,
        this will be the same as filename, but without a drive letter and with
        leading path separators removed).
        """
        if isinstance(filename, os.PathLike):
            filename = os.fspath(filename)
        st = os.stat(filename)
        isdir = stat.S_ISDIR(st.st_mode)
        mtime = time.localtime(st.st_mtime)
        date_time = mtime[0:6]
        # Create ZipInfo instance to store file information
        if arcname is None:
            arcname = filename
        arcname = os.path.normpath(os.path.splitdrive(arcname)[1])
        while arcname[0] in (os.sep, os.altsep):
            arcname = arcname[1:]
        if isdir:
            arcname += '/'
        zinfo = cls(arcname, date_time)
        zinfo.external_attr = (st.st_mode & 0xFFFF) << 16  # Unix attributes
        if isdir:
            zinfo.file_size = 0
            zinfo.external_attr |= 0x10  # MS-DOS directory flag
        else:
            zinfo.file_size = st.st_size

        return zinfo 

def _extract_member(self, member, targetpath, pwd):
        """Extract the ZipInfo object 'member' to a physical
           file on the path targetpath.
        """
        # build the destination pathname, replacing
        # forward slashes to platform specific separators.
        arcname = member.filename.replace('/', os.path.sep)

        if os.path.altsep:
            arcname = arcname.replace(os.path.altsep, os.path.sep)
        # interpret absolute pathname as relative, remove drive letter or
        # UNC path, redundant separators, "." and ".." components.
        arcname = os.path.splitdrive(arcname)[1]
        invalid_path_parts = ('', os.path.curdir, os.path.pardir)
        arcname = os.path.sep.join(x for x in arcname.split(os.path.sep)
                                   if x not in invalid_path_parts)
        if os.path.sep == '\\':
            # filter illegal characters on Windows
            arcname = self._sanitize_windows_name(arcname, os.path.sep)

        targetpath = os.path.join(targetpath, arcname)
        targetpath = os.path.normpath(targetpath)

        # Create all upper directories if necessary.
        upperdirs = os.path.dirname(targetpath)
        if upperdirs and not os.path.exists(upperdirs):
            os.makedirs(upperdirs)

        if member.filename[-1] == '/':
            if not os.path.isdir(targetpath):
                os.mkdir(targetpath)
            return targetpath

        with self.open(member, pwd=pwd) as source, \
             open(targetpath, "wb") as target:
            shutil.copyfileobj(source, target)

        return targetpath 

def _fullmodname(path):
    """Return a plausible module name for the path."""

    # If the file 'path' is part of a package, then the filename isn't
    # enough to uniquely identify it.  Try to do the right thing by
    # looking in sys.path for the longest matching prefix.  We'll
    # assume that the rest is the package name.

    comparepath = os.path.normcase(path)
    longest = ""
    for dir in sys.path:
        dir = os.path.normcase(dir)
        if comparepath.startswith(dir) and comparepath[len(dir)] == os.sep:
            if len(dir) > len(longest):
                longest = dir

    if longest:
        base = path[len(longest) + 1:]
    else:
        base = path
    # the drive letter is never part of the module name
    drive, base = os.path.splitdrive(base)
    base = base.replace(os.sep, ".")
    if os.altsep:
        base = base.replace(os.altsep, ".")
    filename, ext = os.path.splitext(base)
    return filename.lstrip(".") 

def _extract_member(self, member, targetpath, pwd):
        """Extract the ZipInfo object 'member' to a physical
           file on the path targetpath.
        """
        # build the destination pathname, replacing
        # forward slashes to platform specific separators.
        # Strip trailing path separator, unless it represents the root.
        if (targetpath[-1:] in (os.path.sep, os.path.altsep)
            and len(os.path.splitdrive(targetpath)[1]) > 1):
            targetpath = targetpath[:-1]

        # don't include leading "/" from file name if present
        if member.filename[0] == '/':
            targetpath = os.path.join(targetpath, member.filename[1:])
        else:
            targetpath = os.path.join(targetpath, member.filename)

        targetpath = os.path.normpath(targetpath)

        # Create all upper directories if necessary.
        upperdirs = os.path.dirname(targetpath)
        if upperdirs and not os.path.exists(upperdirs):
            os.makedirs(upperdirs)

        if member.filename[-1] == '/':
            if not os.path.isdir(targetpath):
                os.mkdir(targetpath)
            return targetpath

        source = self.open(member, pwd=pwd)
        target = file(targetpath, "wb")
        shutil.copyfileobj(source, target)
        source.close()
        target.close()

        return targetpath 

def get_template(self, uri):
        """Return a :class:`.Template` object corresponding to the given
        ``uri``.

        .. note:: The ``relativeto`` argument is not supported here at
           the moment.

        """

        try:
            if self.filesystem_checks:
                return self._check(uri, self._collection[uri])
            else:
                return self._collection[uri]
        except KeyError:
            u = re.sub(r"^\/+", "", uri)
            for dir_ in self.directories:
                # make sure the path seperators are posix - os.altsep is empty
                # on POSIX and cannot be used.
                dir_ = dir_.replace(os.path.sep, posixpath.sep)
                srcfile = posixpath.normpath(posixpath.join(dir_, u))
                if os.path.isfile(srcfile):
                    return self._load(srcfile, uri)
            else:
                raise exceptions.TopLevelLookupException(
                    "Cant locate template for uri %r" % uri
                ) 

def _extract_member(self, member, targetpath, pwd):
        """Extract the ZipInfo object 'member' to a physical
           file on the path targetpath.
        """
        # build the destination pathname, replacing
        # forward slashes to platform specific separators.
        # Strip trailing path separator, unless it represents the root.
        if (targetpath[-1:] in (os.path.sep, os.path.altsep)
            and len(os.path.splitdrive(targetpath)[1]) > 1):
            targetpath = targetpath[:-1]

        # don't include leading "/" from file name if present
        if member.filename[0] == '/':
            targetpath = os.path.join(targetpath, member.filename[1:])
        else:
            targetpath = os.path.join(targetpath, member.filename)

        targetpath = os.path.normpath(targetpath)

        # Create all upper directories if necessary.
        upperdirs = os.path.dirname(targetpath)
        if upperdirs and not os.path.exists(upperdirs):
            os.makedirs(upperdirs)

        if member.filename[-1] == '/':
            if not os.path.isdir(targetpath):
                os.mkdir(targetpath)
            return targetpath

        source = self.open(member, pwd=pwd)
        target = file(targetpath, "wb")
        shutil.copyfileobj(source, target)
        source.close()
        target.close()

        return targetpath 

def make_relative(self, path):
        npath, last = os.path.split(normalize_path(path))
        baselen = len(self.basedir)
        parts = [last]
        sep = os.altsep == '/' and '/' or os.sep
        while len(npath) >= baselen:
            if npath == self.basedir:
                parts.append(os.curdir)
                parts.reverse()
                return sep.join(parts)
            npath, last = os.path.split(npath)
            parts.append(last)
        else:
            return path 

def _ToGypPath(path):
  """Converts a path to the format used by gyp."""
  if os.sep == '\\' and os.altsep == '/':
    return path.replace('\\', '/')
  return path 

def switch_character():
    '''Return the OS-specific command line option switch character.'''
    if os.altsep is not None:
        return os.altsep
    if os_is_uefi():
        return '/'
    elif os_is_windows():
        return '/'
    else:  # UNIX:
        return '-' 

def make_relative(self, path):
        npath, last = os.path.split(normalize_path(path))
        baselen = len(self.basedir)
        parts = [last]
        sep = os.altsep == '/' and '/' or os.sep
        while len(npath) >= baselen:
            if npath == self.basedir:
                parts.append(os.curdir)
                parts.reverse()
                return sep.join(parts)
            npath, last = os.path.split(npath)
            parts.append(last)
        else:
            return path 

def get_template(self, uri):
        """Return a :class:`.Template` object corresponding to the given
        ``uri``.

        .. note:: The ``relativeto`` argument is not supported here at
           the moment.

        """

        try:
            if self.filesystem_checks:
                return self._check(uri, self._collection[uri])
            else:
                return self._collection[uri]
        except KeyError:
            u = re.sub(r"^\/+", "", uri)
            for dir_ in self.directories:
                # make sure the path seperators are posix - os.altsep is empty
                # on POSIX and cannot be used.
                dir_ = dir_.replace(os.path.sep, posixpath.sep)
                srcfile = posixpath.normpath(posixpath.join(dir_, u))
                if os.path.isfile(srcfile):
                    return self._load(srcfile, uri)
            else:
                raise exceptions.TopLevelLookupException(
                    "Cant locate template for uri %r" % uri
                ) 

def set_source(self, module_name, source, source_extension='.c', **kwds):
        import os
        if hasattr(self, '_assigned_source'):
            raise ValueError("set_source() cannot be called several times "
                             "per ffi object")
        if not isinstance(module_name, basestring):
            raise TypeError("'module_name' must be a string")
        if os.sep in module_name or (os.altsep and os.altsep in module_name):
            raise ValueError("'module_name' must not contain '/': use a dotted "
                             "name to make a 'package.module' location")
        self._assigned_source = (str(module_name), source,
                                 source_extension, kwds) 

def _extract_member(self, member, targetpath, pwd):
        """Extract the ZipInfo object 'member' to a physical
           file on the path targetpath.
        """
        # build the destination pathname, replacing
        # forward slashes to platform specific separators.
        arcname = member.filename.replace('/', os.path.sep)

        if os.path.altsep:
            arcname = arcname.replace(os.path.altsep, os.path.sep)
        # interpret absolute pathname as relative, remove drive letter or
        # UNC path, redundant separators, "." and ".." components.
        arcname = os.path.splitdrive(arcname)[1]
        invalid_path_parts = ('', os.path.curdir, os.path.pardir)
        arcname = os.path.sep.join(x for x in arcname.split(os.path.sep)
                                   if x not in invalid_path_parts)
        if os.path.sep == '\\':
            # filter illegal characters on Windows
            arcname = self._sanitize_windows_name(arcname, os.path.sep)

        targetpath = os.path.join(targetpath, arcname)
        targetpath = os.path.normpath(targetpath)

        # Create all upper directories if necessary.
        upperdirs = os.path.dirname(targetpath)
        if upperdirs and not os.path.exists(upperdirs):
            os.makedirs(upperdirs)

        if member.filename[-1] == '/':
            if not os.path.isdir(targetpath):
                os.mkdir(targetpath)
            return targetpath

        with self.open(member, pwd=pwd) as source, \
             open(targetpath, "wb") as target:
            shutil.copyfileobj(source, target)

        return targetpath