Python os 模块,fspath() 实例源码

我们从Python开源项目中,提取了以下50个代码示例,用于说明如何使用os.fspath()

项目:python-    作者:secondtonone1    | 项目源码 | 文件源码
def normcase(s):
    """Normalize case of pathname.

    Makes all characters lowercase and all slashes into backslashes."""
    s = os.fspath(s)
    try:
        if isinstance(s, bytes):
            return s.replace(b'/', b'\\').lower()
        else:
            return s.replace('/', '\\').lower()
    except (TypeError, AttributeError):
        if not isinstance(s, (bytes, str)):
            raise TypeError("normcase() argument must be str or bytes, "
                            "not %r" % s.__class__.__name__) from None
        raise


# Return whether a path is absolute.
# Trivial in Posix, harder on Windows.
# For Windows it is absolute if it starts with a slash or backslash (current
# volume), or if a pathname after the volume-letter-and-colon or UNC-resource
# starts with a slash or backslash.
项目:python-    作者:secondtonone1    | 项目源码 | 文件源码
def split(p):
    """Split a pathname.

    Return tuple (head, tail) where tail is everything after the final slash.
    Either part may be empty."""
    p = os.fspath(p)
    seps = _get_bothseps(p)
    d, p = splitdrive(p)
    # set i to index beyond p's last slash
    i = len(p)
    while i and p[i-1] not in seps:
        i -= 1
    head, tail = p[:i], p[i:]  # now tail has no slashes
    # remove trailing slashes from head, unless it's all slashes
    head = head.rstrip(seps) or head
    return d + head, tail


# Split a path in root and extension.
# The extension is everything starting at the last dot in the last
# pathname component; the root is everything before that.
# It is always true that root + ext == p.
项目:python-    作者:secondtonone1    | 项目源码 | 文件源码
def abspath(path):
        """Return the absolute version of a path."""

        if path: # Empty path must return current working directory.
            path = os.fspath(path)
            try:
                path = _getfullpathname(path)
            except OSError:
                pass # Bad path - return unchanged.
        elif isinstance(path, bytes):
            path = os.getcwdb()
        else:
            path = os.getcwd()
        return normpath(path)

# realpath is a no-op on systems without islink support
项目:python-    作者:secondtonone1    | 项目源码 | 文件源码
def split(p):
    """Split a pathname.  Returns tuple "(head, tail)" where "tail" is
    everything after the final slash.  Either part may be empty."""
    p = os.fspath(p)
    sep = _get_sep(p)
    i = p.rfind(sep) + 1
    head, tail = p[:i], p[i:]
    if head and head != sep*len(head):
        head = head.rstrip(sep)
    return head, tail


# Split a path in root and extension.
# The extension is everything starting at the last dot in the last
# pathname component; the root is everything before that.
# It is always true that root + ext == p.
项目:python-    作者:secondtonone1    | 项目源码 | 文件源码
def commonprefix(m):
    "Given a list of pathnames, returns the longest common leading component"
    if not m: return ''
    # Some people pass in a list of pathname parts to operate in an OS-agnostic
    # fashion; don't try to translate in that case as that's an abuse of the
    # API and they are already doing what they need to be OS-agnostic and so
    # they most likely won't be using an os.PathLike object in the sublists.
    if not isinstance(m[0], (list, tuple)):
        m = tuple(map(os.fspath, m))
    s1 = min(m)
    s2 = max(m)
    for i, c in enumerate(s1):
        if c != s2[i]:
            return s1[:i]
    return s1

# Are two stat buffers (obtained from stat, fstat or lstat)
# describing the same file?
项目:ivaochdoc    作者:ivaoch    | 项目源码 | 文件源码
def normcase(s):
    """Normalize case of pathname.

    Makes all characters lowercase and all slashes into backslashes."""
    s = os.fspath(s)
    try:
        if isinstance(s, bytes):
            return s.replace(b'/', b'\\').lower()
        else:
            return s.replace('/', '\\').lower()
    except (TypeError, AttributeError):
        if not isinstance(s, (bytes, str)):
            raise TypeError("normcase() argument must be str or bytes, "
                            "not %r" % s.__class__.__name__) from None
        raise


# Return whether a path is absolute.
# Trivial in Posix, harder on Windows.
# For Windows it is absolute if it starts with a slash or backslash (current
# volume), or if a pathname after the volume-letter-and-colon or UNC-resource
# starts with a slash or backslash.
项目:ivaochdoc    作者:ivaoch    | 项目源码 | 文件源码
def split(p):
    """Split a pathname.

    Return tuple (head, tail) where tail is everything after the final slash.
    Either part may be empty."""
    p = os.fspath(p)
    seps = _get_bothseps(p)
    d, p = splitdrive(p)
    # set i to index beyond p's last slash
    i = len(p)
    while i and p[i-1] not in seps:
        i -= 1
    head, tail = p[:i], p[i:]  # now tail has no slashes
    # remove trailing slashes from head, unless it's all slashes
    head = head.rstrip(seps) or head
    return d + head, tail


# Split a path in root and extension.
# The extension is everything starting at the last dot in the last
# pathname component; the root is everything before that.
# It is always true that root + ext == p.
项目:ivaochdoc    作者:ivaoch    | 项目源码 | 文件源码
def abspath(path):
        """Return the absolute version of a path."""

        if path: # Empty path must return current working directory.
            path = os.fspath(path)
            try:
                path = _getfullpathname(path)
            except OSError:
                pass # Bad path - return unchanged.
        elif isinstance(path, bytes):
            path = os.getcwdb()
        else:
            path = os.getcwd()
        return normpath(path)

# realpath is a no-op on systems without islink support
项目:ivaochdoc    作者:ivaoch    | 项目源码 | 文件源码
def split(p):
    """Split a pathname.  Returns tuple "(head, tail)" where "tail" is
    everything after the final slash.  Either part may be empty."""
    p = os.fspath(p)
    sep = _get_sep(p)
    i = p.rfind(sep) + 1
    head, tail = p[:i], p[i:]
    if head and head != sep*len(head):
        head = head.rstrip(sep)
    return head, tail


# Split a path in root and extension.
# The extension is everything starting at the last dot in the last
# pathname component; the root is everything before that.
# It is always true that root + ext == p.
项目:ivaochdoc    作者:ivaoch    | 项目源码 | 文件源码
def commonprefix(m):
    "Given a list of pathnames, returns the longest common leading component"
    if not m: return ''
    # Some people pass in a list of pathname parts to operate in an OS-agnostic
    # fashion; don't try to translate in that case as that's an abuse of the
    # API and they are already doing what they need to be OS-agnostic and so
    # they most likely won't be using an os.PathLike object in the sublists.
    if not isinstance(m[0], (list, tuple)):
        m = tuple(map(os.fspath, m))
    s1 = min(m)
    s2 = max(m)
    for i, c in enumerate(s1):
        if c != s2[i]:
            return s1[:i]
    return s1

# Are two stat buffers (obtained from stat, fstat or lstat)
# describing the same file?
项目:news-for-good    作者:thecodinghub    | 项目源码 | 文件源码
def normcase(s):
    """Normalize case of pathname.

    Makes all characters lowercase and all slashes into backslashes."""
    s = os.fspath(s)
    try:
        if isinstance(s, bytes):
            return s.replace(b'/', b'\\').lower()
        else:
            return s.replace('/', '\\').lower()
    except (TypeError, AttributeError):
        if not isinstance(s, (bytes, str)):
            raise TypeError("normcase() argument must be str or bytes, "
                            "not %r" % s.__class__.__name__) from None
        raise


# Return whether a path is absolute.
# Trivial in Posix, harder on Windows.
# For Windows it is absolute if it starts with a slash or backslash (current
# volume), or if a pathname after the volume-letter-and-colon or UNC-resource
# starts with a slash or backslash.
项目:news-for-good    作者:thecodinghub    | 项目源码 | 文件源码
def split(p):
    """Split a pathname.

    Return tuple (head, tail) where tail is everything after the final slash.
    Either part may be empty."""
    p = os.fspath(p)
    seps = _get_bothseps(p)
    d, p = splitdrive(p)
    # set i to index beyond p's last slash
    i = len(p)
    while i and p[i-1] not in seps:
        i -= 1
    head, tail = p[:i], p[i:]  # now tail has no slashes
    # remove trailing slashes from head, unless it's all slashes
    head = head.rstrip(seps) or head
    return d + head, tail


# Split a path in root and extension.
# The extension is everything starting at the last dot in the last
# pathname component; the root is everything before that.
# It is always true that root + ext == p.
项目:news-for-good    作者:thecodinghub    | 项目源码 | 文件源码
def abspath(path):
        """Return the absolute version of a path."""

        if path: # Empty path must return current working directory.
            path = os.fspath(path)
            try:
                path = _getfullpathname(path)
            except OSError:
                pass # Bad path - return unchanged.
        elif isinstance(path, bytes):
            path = os.getcwdb()
        else:
            path = os.getcwd()
        return normpath(path)

# realpath is a no-op on systems without islink support
项目:news-for-good    作者:thecodinghub    | 项目源码 | 文件源码
def split(p):
    """Split a pathname.  Returns tuple "(head, tail)" where "tail" is
    everything after the final slash.  Either part may be empty."""
    p = os.fspath(p)
    sep = _get_sep(p)
    i = p.rfind(sep) + 1
    head, tail = p[:i], p[i:]
    if head and head != sep*len(head):
        head = head.rstrip(sep)
    return head, tail


# Split a path in root and extension.
# The extension is everything starting at the last dot in the last
# pathname component; the root is everything before that.
# It is always true that root + ext == p.
项目:news-for-good    作者:thecodinghub    | 项目源码 | 文件源码
def commonprefix(m):
    "Given a list of pathnames, returns the longest common leading component"
    if not m: return ''
    # Some people pass in a list of pathname parts to operate in an OS-agnostic
    # fashion; don't try to translate in that case as that's an abuse of the
    # API and they are already doing what they need to be OS-agnostic and so
    # they most likely won't be using an os.PathLike object in the sublists.
    if not isinstance(m[0], (list, tuple)):
        m = tuple(map(os.fspath, m))
    s1 = min(m)
    s2 = max(m)
    for i, c in enumerate(s1):
        if c != s2[i]:
            return s1[:i]
    return s1

# Are two stat buffers (obtained from stat, fstat or lstat)
# describing the same file?
项目:asyncpg    作者:MagicStack    | 项目源码 | 文件源码
def fspath(path):
        fsp = getattr(path, '__fspath__', None)
        if fsp is not None and callable(fsp):
            path = fsp()
            if not isinstance(path, (str, bytes)):
                raise TypeError(
                    'expected {}() to return str or bytes, not {}'.format(
                        fsp.__qualname__, type(path).__name__
                    ))
            return path
        elif isinstance(path, (str, bytes)):
            return path
        else:
            raise TypeError(
                'expected str, bytes or path-like object, not {}'.format(
                    type(path).__name__
                )
            )
项目:python-    作者:secondtonone1    | 项目源码 | 文件源码
def isabs(s):
    """Test whether a path is absolute"""
    s = os.fspath(s)
    s = splitdrive(s)[1]
    return len(s) > 0 and s[0] in _get_bothseps(s)


# Join two (or more) paths.
项目:python-    作者:secondtonone1    | 项目源码 | 文件源码
def ismount(path):
    """Test whether a path is a mount point (a drive root, the root of a
    share, or a mounted volume)"""
    path = os.fspath(path)
    seps = _get_bothseps(path)
    path = abspath(path)
    root, rest = splitdrive(path)
    if root and root[0] in seps:
        return (not rest) or (rest in seps)
    if rest in seps:
        return True

    if _getvolumepathname:
        return path.rstrip(seps) == _getvolumepathname(path).rstrip(seps)
    else:
        return False


# Expand paths beginning with '~' or '~user'.
# '~' means $HOME; '~user' means that user's home directory.
# If the path doesn't begin with '~', or if the user or $HOME is unknown,
# the path is returned unchanged (leaving error reporting to whatever
# function is called with the expanded path as argument).
# See also module 'glob' for expansion of *, ? and [...] in pathnames.
# (A function should also be defined to do full *sh-style environment
# variable expansion.)
项目:python-    作者:secondtonone1    | 项目源码 | 文件源码
def abspath(path):
        """Return the absolute version of a path."""
        path = os.fspath(path)
        if not isabs(path):
            if isinstance(path, bytes):
                cwd = os.getcwdb()
            else:
                cwd = os.getcwd()
            path = join(cwd, path)
        return normpath(path)
项目:python-    作者:secondtonone1    | 项目源码 | 文件源码
def normcase(s):
    """Normalize case of pathname.  Has no effect under Posix"""
    s = os.fspath(s)
    if not isinstance(s, (bytes, str)):
        raise TypeError("normcase() argument must be str or bytes, "
                        "not '{}'".format(s.__class__.__name__))
    return s


# Return whether a path is absolute.
# Trivial in Posix, harder on the Mac or MS-DOS.
项目:python-    作者:secondtonone1    | 项目源码 | 文件源码
def isabs(s):
    """Test whether a path is absolute"""
    s = os.fspath(s)
    sep = _get_sep(s)
    return s.startswith(sep)


# Join pathnames.
# Ignore the previous parts if a part is absolute.
# Insert a '/' unless the first part is empty or already ends in '/'.
项目:python-    作者:secondtonone1    | 项目源码 | 文件源码
def join(a, *p):
    """Join two or more pathname components, inserting '/' as needed.
    If any component is an absolute path, all previous path components
    will be discarded.  An empty last part will result in a path that
    ends with a separator."""
    a = os.fspath(a)
    sep = _get_sep(a)
    path = a
    try:
        if not p:
            path[:0] + sep  #23780: Ensure compatible data type even if p is null.
        for b in map(os.fspath, p):
            if b.startswith(sep):
                path = b
            elif not path or path.endswith(sep):
                path += b
            else:
                path += sep + b
    except (TypeError, AttributeError, BytesWarning):
        genericpath._check_arg_types('join', a, *p)
        raise
    return path


# Split a path in head (everything up to the last '/') and tail (the
# rest).  If the path ends in '/', tail will be empty.  If there is no
# '/' in the path, head  will be empty.
# Trailing '/'es are stripped from head unless it is the root.
项目:python-    作者:secondtonone1    | 项目源码 | 文件源码
def splitdrive(p):
    """Split a pathname into drive and path. On Posix, drive is always
    empty."""
    p = os.fspath(p)
    return p[:0], p


# Return the tail (basename) part of a path, same as split(path)[1].
项目:python-    作者:secondtonone1    | 项目源码 | 文件源码
def basename(p):
    """Returns the final component of a pathname"""
    p = os.fspath(p)
    sep = _get_sep(p)
    i = p.rfind(sep) + 1
    return p[i:]


# Return the head (dirname) part of a path, same as split(path)[0].
项目:python-    作者:secondtonone1    | 项目源码 | 文件源码
def dirname(p):
    """Returns the directory component of a pathname"""
    p = os.fspath(p)
    sep = _get_sep(p)
    i = p.rfind(sep) + 1
    head = p[:i]
    if head and head != sep*len(head):
        head = head.rstrip(sep)
    return head


# Is a path a symbolic link?
# This will always return false on systems where os.lstat doesn't exist.
项目:python-    作者:secondtonone1    | 项目源码 | 文件源码
def abspath(path):
    """Return an absolute path."""
    path = os.fspath(path)
    if not isabs(path):
        if isinstance(path, bytes):
            cwd = os.getcwdb()
        else:
            cwd = os.getcwd()
        path = join(cwd, path)
    return normpath(path)


# Return a canonical path (i.e. the absolute location of a file on the
# filesystem).
项目:python-    作者:secondtonone1    | 项目源码 | 文件源码
def realpath(filename):
    """Return the canonical path of the specified filename, eliminating any
symbolic links encountered in the path."""
    filename = os.fspath(filename)
    path, ok = _joinrealpath(filename[:0], filename, {})
    return abspath(path)

# Join two paths, normalizing and eliminating any symbolic links
# encountered in the second path.
项目:python-    作者:secondtonone1    | 项目源码 | 文件源码
def relpath(path, start=None):
    """Return a relative version of a path"""

    if not path:
        raise ValueError("no path specified")

    path = os.fspath(path)
    if isinstance(path, bytes):
        curdir = b'.'
        sep = b'/'
        pardir = b'..'
    else:
        curdir = '.'
        sep = '/'
        pardir = '..'

    if start is None:
        start = curdir
    else:
        start = os.fspath(start)

    try:
        start_list = [x for x in abspath(start).split(sep) if x]
        path_list = [x for x in abspath(path).split(sep) if x]
        # Work out how much of the filepath is shared by start and path.
        i = len(commonprefix([start_list, path_list]))

        rel_list = [pardir] * (len(start_list)-i) + path_list[i:]
        if not rel_list:
            return curdir
        return join(*rel_list)
    except (TypeError, AttributeError, BytesWarning, DeprecationWarning):
        genericpath._check_arg_types('relpath', path, start)
        raise


# Return the longest common sub-path of the sequence of paths given as input.
# The paths are not normalized before comparing them (this is the
# responsibility of the caller). Any trailing separator is stripped from the
# returned path.
项目:python-    作者:secondtonone1    | 项目源码 | 文件源码
def commonpath(paths):
    """Given a sequence of path names, returns the longest common sub-path."""

    if not paths:
        raise ValueError('commonpath() arg is an empty sequence')

    paths = tuple(map(os.fspath, paths))
    if isinstance(paths[0], bytes):
        sep = b'/'
        curdir = b'.'
    else:
        sep = '/'
        curdir = '.'

    try:
        split_paths = [path.split(sep) for path in paths]

        try:
            isabs, = set(p[:1] == sep for p in paths)
        except ValueError:
            raise ValueError("Can't mix absolute and relative paths") from None

        split_paths = [[c for c in s if c and c != curdir] for s in split_paths]
        s1 = min(split_paths)
        s2 = max(split_paths)
        common = s1
        for i, c in enumerate(s1):
            if c != s2[i]:
                common = s1[:i]
                break

        prefix = sep if isabs else sep[:0]
        return prefix + sep.join(common)
    except (TypeError, AttributeError):
        genericpath._check_arg_types('commonpath', *paths)
        raise
项目:senf    作者:quodlibet    | 项目源码 | 文件源码
def test_path2fsn_pathlike():
    # basic tests for os.fspath
    with pytest.raises(TypeError):
        os.fspath(PathLike(None))
    assert os.fspath(PathLike(fsnative(u"foo"))) == fsnative(u"foo")
    assert os.fspath(PathLike(u"\u1234")) == u"\u1234"

    # now support in path2fsn
    pathlike = PathLike(fsnative(u"foo"))
    assert path2fsn(pathlike) == fsnative(u"foo")

    # pathlib should also work..
    from pathlib import Path
    assert path2fsn(Path(".")) == fsnative(u".")
项目:ivaochdoc    作者:ivaoch    | 项目源码 | 文件源码
def isabs(s):
    """Test whether a path is absolute"""
    s = os.fspath(s)
    s = splitdrive(s)[1]
    return len(s) > 0 and s[0] in _get_bothseps(s)


# Join two (or more) paths.
项目:ivaochdoc    作者:ivaoch    | 项目源码 | 文件源码
def ismount(path):
    """Test whether a path is a mount point (a drive root, the root of a
    share, or a mounted volume)"""
    path = os.fspath(path)
    seps = _get_bothseps(path)
    path = abspath(path)
    root, rest = splitdrive(path)
    if root and root[0] in seps:
        return (not rest) or (rest in seps)
    if rest in seps:
        return True

    if _getvolumepathname:
        return path.rstrip(seps) == _getvolumepathname(path).rstrip(seps)
    else:
        return False


# Expand paths beginning with '~' or '~user'.
# '~' means $HOME; '~user' means that user's home directory.
# If the path doesn't begin with '~', or if the user or $HOME is unknown,
# the path is returned unchanged (leaving error reporting to whatever
# function is called with the expanded path as argument).
# See also module 'glob' for expansion of *, ? and [...] in pathnames.
# (A function should also be defined to do full *sh-style environment
# variable expansion.)
项目:ivaochdoc    作者:ivaoch    | 项目源码 | 文件源码
def abspath(path):
        """Return the absolute version of a path."""
        path = os.fspath(path)
        if not isabs(path):
            if isinstance(path, bytes):
                cwd = os.getcwdb()
            else:
                cwd = os.getcwd()
            path = join(cwd, path)
        return normpath(path)
项目:ivaochdoc    作者:ivaoch    | 项目源码 | 文件源码
def normcase(s):
    """Normalize case of pathname.  Has no effect under Posix"""
    s = os.fspath(s)
    if not isinstance(s, (bytes, str)):
        raise TypeError("normcase() argument must be str or bytes, "
                        "not '{}'".format(s.__class__.__name__))
    return s


# Return whether a path is absolute.
# Trivial in Posix, harder on the Mac or MS-DOS.
项目:ivaochdoc    作者:ivaoch    | 项目源码 | 文件源码
def isabs(s):
    """Test whether a path is absolute"""
    s = os.fspath(s)
    sep = _get_sep(s)
    return s.startswith(sep)


# Join pathnames.
# Ignore the previous parts if a part is absolute.
# Insert a '/' unless the first part is empty or already ends in '/'.
项目:ivaochdoc    作者:ivaoch    | 项目源码 | 文件源码
def join(a, *p):
    """Join two or more pathname components, inserting '/' as needed.
    If any component is an absolute path, all previous path components
    will be discarded.  An empty last part will result in a path that
    ends with a separator."""
    a = os.fspath(a)
    sep = _get_sep(a)
    path = a
    try:
        if not p:
            path[:0] + sep  #23780: Ensure compatible data type even if p is null.
        for b in map(os.fspath, p):
            if b.startswith(sep):
                path = b
            elif not path or path.endswith(sep):
                path += b
            else:
                path += sep + b
    except (TypeError, AttributeError, BytesWarning):
        genericpath._check_arg_types('join', a, *p)
        raise
    return path


# Split a path in head (everything up to the last '/') and tail (the
# rest).  If the path ends in '/', tail will be empty.  If there is no
# '/' in the path, head  will be empty.
# Trailing '/'es are stripped from head unless it is the root.
项目:ivaochdoc    作者:ivaoch    | 项目源码 | 文件源码
def splitdrive(p):
    """Split a pathname into drive and path. On Posix, drive is always
    empty."""
    p = os.fspath(p)
    return p[:0], p


# Return the tail (basename) part of a path, same as split(path)[1].
项目:ivaochdoc    作者:ivaoch    | 项目源码 | 文件源码
def basename(p):
    """Returns the final component of a pathname"""
    p = os.fspath(p)
    sep = _get_sep(p)
    i = p.rfind(sep) + 1
    return p[i:]


# Return the head (dirname) part of a path, same as split(path)[0].
项目:ivaochdoc    作者:ivaoch    | 项目源码 | 文件源码
def dirname(p):
    """Returns the directory component of a pathname"""
    p = os.fspath(p)
    sep = _get_sep(p)
    i = p.rfind(sep) + 1
    head = p[:i]
    if head and head != sep*len(head):
        head = head.rstrip(sep)
    return head


# Is a path a symbolic link?
# This will always return false on systems where os.lstat doesn't exist.
项目:ivaochdoc    作者:ivaoch    | 项目源码 | 文件源码
def abspath(path):
    """Return an absolute path."""
    path = os.fspath(path)
    if not isabs(path):
        if isinstance(path, bytes):
            cwd = os.getcwdb()
        else:
            cwd = os.getcwd()
        path = join(cwd, path)
    return normpath(path)


# Return a canonical path (i.e. the absolute location of a file on the
# filesystem).
项目:ivaochdoc    作者:ivaoch    | 项目源码 | 文件源码
def realpath(filename):
    """Return the canonical path of the specified filename, eliminating any
symbolic links encountered in the path."""
    filename = os.fspath(filename)
    path, ok = _joinrealpath(filename[:0], filename, {})
    return abspath(path)

# Join two paths, normalizing and eliminating any symbolic links
# encountered in the second path.
项目:ivaochdoc    作者:ivaoch    | 项目源码 | 文件源码
def relpath(path, start=None):
    """Return a relative version of a path"""

    if not path:
        raise ValueError("no path specified")

    path = os.fspath(path)
    if isinstance(path, bytes):
        curdir = b'.'
        sep = b'/'
        pardir = b'..'
    else:
        curdir = '.'
        sep = '/'
        pardir = '..'

    if start is None:
        start = curdir
    else:
        start = os.fspath(start)

    try:
        start_list = [x for x in abspath(start).split(sep) if x]
        path_list = [x for x in abspath(path).split(sep) if x]
        # Work out how much of the filepath is shared by start and path.
        i = len(commonprefix([start_list, path_list]))

        rel_list = [pardir] * (len(start_list)-i) + path_list[i:]
        if not rel_list:
            return curdir
        return join(*rel_list)
    except (TypeError, AttributeError, BytesWarning, DeprecationWarning):
        genericpath._check_arg_types('relpath', path, start)
        raise


# Return the longest common sub-path of the sequence of paths given as input.
# The paths are not normalized before comparing them (this is the
# responsibility of the caller). Any trailing separator is stripped from the
# returned path.
项目:ivaochdoc    作者:ivaoch    | 项目源码 | 文件源码
def commonpath(paths):
    """Given a sequence of path names, returns the longest common sub-path."""

    if not paths:
        raise ValueError('commonpath() arg is an empty sequence')

    paths = tuple(map(os.fspath, paths))
    if isinstance(paths[0], bytes):
        sep = b'/'
        curdir = b'.'
    else:
        sep = '/'
        curdir = '.'

    try:
        split_paths = [path.split(sep) for path in paths]

        try:
            isabs, = set(p[:1] == sep for p in paths)
        except ValueError:
            raise ValueError("Can't mix absolute and relative paths") from None

        split_paths = [[c for c in s if c and c != curdir] for s in split_paths]
        s1 = min(split_paths)
        s2 = max(split_paths)
        common = s1
        for i, c in enumerate(s1):
            if c != s2[i]:
                common = s1[:i]
                break

        prefix = sep if isabs else sep[:0]
        return prefix + sep.join(common)
    except (TypeError, AttributeError):
        genericpath._check_arg_types('commonpath', *paths)
        raise
项目:CrowdAnki    作者:Stvad    | 项目源码 | 文件源码
def _parse_args(cls, args):
        # This is useful when you don't want to create an instance, just
        # canonicalize some constructor arguments.
        parts = []
        for a in args:
            if isinstance(a, PurePath):
                parts += a._parts
            else:
                if sys.version_info >= (3, 6):
                    a = os.fspath(a)
                else:
                    # duck typing for older Python versions
                    if hasattr(a, "__fspath__"):
                        a = a.__fspath__()
                if isinstance(a, str):
                    # Force-cast str subclasses to str (issue #21127)
                    parts.append(str(a))
                # also handle unicode for PY2 (six.text_type = unicode)
                elif six.PY2 and isinstance(a, six.text_type):
                    # cast to str using filesystem encoding
                    parts.append(a.encode(sys.getfilesystemencoding()))
                else:
                    raise TypeError(
                        "argument should be a str object or an os.PathLike "
                        "object returning str, not %r"
                        % type(a))
        return cls._flavour.parse_parts(parts)
项目:news-for-good    作者:thecodinghub    | 项目源码 | 文件源码
def isabs(s):
    """Test whether a path is absolute"""
    s = os.fspath(s)
    s = splitdrive(s)[1]
    return len(s) > 0 and s[0] in _get_bothseps(s)


# Join two (or more) paths.
项目:news-for-good    作者:thecodinghub    | 项目源码 | 文件源码
def ismount(path):
    """Test whether a path is a mount point (a drive root, the root of a
    share, or a mounted volume)"""
    path = os.fspath(path)
    seps = _get_bothseps(path)
    path = abspath(path)
    root, rest = splitdrive(path)
    if root and root[0] in seps:
        return (not rest) or (rest in seps)
    if rest in seps:
        return True

    if _getvolumepathname:
        return path.rstrip(seps) == _getvolumepathname(path).rstrip(seps)
    else:
        return False


# Expand paths beginning with '~' or '~user'.
# '~' means $HOME; '~user' means that user's home directory.
# If the path doesn't begin with '~', or if the user or $HOME is unknown,
# the path is returned unchanged (leaving error reporting to whatever
# function is called with the expanded path as argument).
# See also module 'glob' for expansion of *, ? and [...] in pathnames.
# (A function should also be defined to do full *sh-style environment
# variable expansion.)
项目:news-for-good    作者:thecodinghub    | 项目源码 | 文件源码
def abspath(path):
        """Return the absolute version of a path."""
        path = os.fspath(path)
        if not isabs(path):
            if isinstance(path, bytes):
                cwd = os.getcwdb()
            else:
                cwd = os.getcwd()
            path = join(cwd, path)
        return normpath(path)
项目:news-for-good    作者:thecodinghub    | 项目源码 | 文件源码
def normcase(s):
    """Normalize case of pathname.  Has no effect under Posix"""
    s = os.fspath(s)
    if not isinstance(s, (bytes, str)):
        raise TypeError("normcase() argument must be str or bytes, "
                        "not '{}'".format(s.__class__.__name__))
    return s


# Return whether a path is absolute.
# Trivial in Posix, harder on the Mac or MS-DOS.
项目:news-for-good    作者:thecodinghub    | 项目源码 | 文件源码
def isabs(s):
    """Test whether a path is absolute"""
    s = os.fspath(s)
    sep = _get_sep(s)
    return s.startswith(sep)


# Join pathnames.
# Ignore the previous parts if a part is absolute.
# Insert a '/' unless the first part is empty or already ends in '/'.
项目:news-for-good    作者:thecodinghub    | 项目源码 | 文件源码
def join(a, *p):
    """Join two or more pathname components, inserting '/' as needed.
    If any component is an absolute path, all previous path components
    will be discarded.  An empty last part will result in a path that
    ends with a separator."""
    a = os.fspath(a)
    sep = _get_sep(a)
    path = a
    try:
        if not p:
            path[:0] + sep  #23780: Ensure compatible data type even if p is null.
        for b in map(os.fspath, p):
            if b.startswith(sep):
                path = b
            elif not path or path.endswith(sep):
                path += b
            else:
                path += sep + b
    except (TypeError, AttributeError, BytesWarning):
        genericpath._check_arg_types('join', a, *p)
        raise
    return path


# Split a path in head (everything up to the last '/') and tail (the
# rest).  If the path ends in '/', tail will be empty.  If there is no
# '/' in the path, head  will be empty.
# Trailing '/'es are stripped from head unless it is the root.