>>>import os.path

>>>help(os.path)

Help on module ntpath:

NAME:

    ntpath - Common pathname manipulations, WindowsNT/95 version.

FILE

    g:\python26/lib\ntpath.py

DESCRIPTION

    Instead of importing this module directly, import os and refer to

    this module as os.path

FUNCTIONS

    abspath(path)

        Return the absolute version of a path.

    basename(p)

        Return the final component of a pathname

    commonprefix(m)

       Given a list of pathnames, returns the longest common leading component

    dirname(p)

        Returns the directory component of a pathname

    exists(path)

        Test whether a path exists. Returns False for broken symbolic links

    expanduser(path)

        Expand ~ and ~user constructs.

        If user or $HOME is unknow, do nothing

    expandvars(path)

        Expand shell variables of the forms $var, ${var} and %var%

        Unknown variables are left unchanged.

    getatime(filename)

        Return the last access time of a file, reported by os.stat().

    getctime(filename)

        Return the metadata change time of a file, reported by os.stat().

    getmtime(filename)

        Return the last modification time of a file, reported by os.stat().

    getsize(filename)

        Return the size of a file, reported by os.stat()

    isabs(s)

        Test whether a path is absolute

    isdir(s)

        Return true if the pathname refers to an existing directory.

    isfile(path)

        Test whether a path is a regular file

    islink(path)

        Test for symbolic link.

        On WindowsNT/95 and OS/2 always return false

    ismount(path)

        Test whether a path is a mount point (defined as root of drive)

    join(a, *p)

        Join two or more pathname components, inserting "\" as needed.

        If any component is an absolute path, all previous path component

        will be discarded.

    lexists = exists(path)

        Test whether a path exists. Return False for broken symbolic links.

    normcases(s)

        Normalize case of pathname.

        Makes all characters lowercase and all slashes into backslashes.

    normpath(path)

        Normalize path, eliminating double slashes, etc.

    realpath = abspath(path)

        Return the absolute version of a path

    relpath(path, start=".")

        Return a relative version of path

    split(p)

        Split a pathname.

        Return tuple (head, tail) where tail is everything after the final slath

        Either part may be empty

    splitdrive(p)

        Split a pathname into drive and path specifiers. Returns a 2-tuple

        "(drive, path)"; either part may empty

    splitext(p)

        Split the extension from a pathname.

        Extension is everything from the last dot to the end, ignoring leadig dots.

        Returns "(root, ext)"; ext may be empty.

    splitunc(p)

        Split a pathname into UNC mount point and relative path specifiers.

        Return a 2-tuple (unc, rest); either part may be empty.

        If unc is not empty, it has the form "//host/mount" (of similar using

        backslashes). unc+rest is always the input path.

        Paths containing drive letters never have an UNC part.

    walk(top, func, arg)

        Directory tree walk with callback function.

        For each directory in the directory tree rooted at top (including top

        itself, but excluding "." and ".." ), call func(arg, dirname, fnames).

        dirname is the name of the directory, and fnames a list of the name of

        the files and subdirectories in dirname (excluding "." and ".."). func may

        modify the fnames list in-place (e.g. via del or slice assignment),

        and walk will only recurse into the subdirectories whose names remain in 

        fnames; this can be used to implement a filter, or to impose a spectific

        order of visiting. No semantics are defined for, or required of, arg, 

        beyond that arg is always passed to func. It can be sued, e.g., to pass

        a filename pattern, or a mutable object designed to accumulate statistics

        Passing None for arg is common.

DATA 

    __all__ = ["normcase", "isabs", "join", "splitdrive", "split..."

    altsep = "/"

    curdir = "."

    defpath = r".;C:\bin"

    devnull = "nul"

    extsep = "."

    patdir = ".."

    pathsep = ";"

    sep = r"\"

    supporte_unicode_filename = True ]

end

posted on 2011-03-21 15:00  oyzway  阅读(1057)  评论(0编辑  收藏  举报