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-\section{Standard Module \module{posixpath}}
-\label{module-posixpath}
-\stmodindex{posixpath}
-
-This module implements some useful functions on \POSIX{} pathnames.
-
-\strong{Do not import this module directly.}  Instead, import the
-module \module{os} and use \code{os.path}.
-\refstmodindex{os}
-
-
-\begin{funcdesc}{basename}{p}
-Return the base name of pathname
-\var{p}.
-This is the second half of the pair returned by
-\code{posixpath.split(\var{p})}.
-\end{funcdesc}
-
-\begin{funcdesc}{commonprefix}{list}
-Return the longest string that is a prefix of all strings in
-\var{list}.
-If
-\var{list}
-is empty, return the empty string (\code{''}).
-\end{funcdesc}
-
-\begin{funcdesc}{exists}{p}
-Return true if
-\var{p}
-refers to an existing path.
-\end{funcdesc}
-
-\begin{funcdesc}{expanduser}{p}
-Return the argument with an initial component of \samp{\~} or
-\samp{\~\var{user}} replaced by that \var{user}'s home directory.  An
-initial \samp{\~{}} is replaced by the environment variable \code{\${}HOME};
-an initial \samp{\~\var{user}} is looked up in the password directory through
-the built-in module \module{pwd}\refbimodindex{pwd}.  If the expansion
-fails, or if the path does not begin with a tilde, the path is
-returned unchanged.
-\end{funcdesc}
-
-\begin{funcdesc}{expandvars}{p}
-Return the argument with environment variables expanded.  Substrings
-of the form \samp{\$\var{name}} or \samp{\$\{\var{name}\}} are
-replaced by the value of environment variable \var{name}.  Malformed
-variable names and references to non-existing variables are left
-unchanged.
-\end{funcdesc}
-
-\begin{funcdesc}{isabs}{p}
-Return true if \var{p} is an absolute pathname (begins with a slash).
-\end{funcdesc}
-
-\begin{funcdesc}{isfile}{p}
-Return true if \var{p} is an existing regular file.  This follows
-symbolic links, so both \function{islink()} and \function{isfile()}
-can be true for the same path.
-\end{funcdesc}
-
-\begin{funcdesc}{isdir}{p}
-Return true if \var{p} is an existing directory.  This follows
-symbolic links, so both \function{islink()} and \function{isdir()} can
-be true for the same path.
-\end{funcdesc}
-
-\begin{funcdesc}{islink}{p}
-Return true if
-\var{p}
-refers to a directory entry that is a symbolic link.
-Always false if symbolic links are not supported.
-\end{funcdesc}
-
-\begin{funcdesc}{ismount}{p}
-Return true if pathname \var{p} is a \dfn{mount point}: a point in a
-file system where a different file system has been mounted.  The
-function checks whether \var{p}'s parent, \file{\var{p}/..}, is on a
-different device than \var{p}, or whether \file{\var{p}/..} and
-\var{p} point to the same i-node on the same device --- this should
-detect mount points for all \UNIX{} and \POSIX{} variants.
-\end{funcdesc}
-
-\begin{funcdesc}{join}{p\optional{, q\optional{, ...}}}
-Joins one or more path components intelligently.  If any component is
-an absolute path, all previous components are thrown away, and joining
-continues.  The return value is the concatenation of \var{p}, and
-optionally \var{q}, etc., with exactly one slash (\code{'/'}) inserted
-between components, unless \var{p} is empty.
-\end{funcdesc}
-
-\begin{funcdesc}{normcase}{p}
-Normalize the case of a pathname.  On \UNIX{}, this returns the path
-unchanged; on case-insensitive filesystems, it converts the path to
-lowercase.  On Windows, it also converts forward slashes to backward
-slashes.
-\end{funcdesc}
-
-\begin{funcdesc}{normpath}{p}
-Normalize a pathname.  This collapses redundant separators and
-up-level references, e.g. \code{A//B}, \code{A/./B} and
-\code{A/foo/../B} all become \code{A/B}.  It does not normalize the
-case (use \function{normcase()} for that).  On Windows, it does
-converts forward slashes to backward slashes.
-\end{funcdesc}
-
-\begin{funcdesc}{samefile}{p, q}
-Return true if both pathname arguments refer to the same file or
-directory (as indicated by device number and i-node number).
-Raise an exception if a \function{os.stat()} call on either pathname
-fails.
-\end{funcdesc}
-
-\begin{funcdesc}{split}{p}
-Split the pathname \var{p} in a pair \code{(\var{head}, \var{tail})},
-where \var{tail} is the last pathname component and \var{head} is
-everything leading up to that.  The \var{tail} part will never contain
-a slash; if \var{p} ends in a slash, \var{tail} will be empty.  If
-there is no slash in \var{p}, \var{head} will be empty.  If \var{p} is
-empty, both \var{head} and \var{tail} are empty.  Trailing slashes are
-stripped from \var{head} unless it is the root (one or more slashes
-only).  In nearly all cases, \code{join(\var{head}, \var{tail})}
-equals \var{p} (the only exception being when there were multiple
-slashes separating \var{head} from \var{tail}).
-\end{funcdesc}
-
-\begin{funcdesc}{splitext}{p}
-Split the pathname \var{p} in a pair \code{(\var{root}, \var{ext})}
-such that \code{\var{root} + \var{ext} == \var{p}},
-and \var{ext} is empty or begins with a period and contains
-at most one period.
-\end{funcdesc}
-
-\begin{funcdesc}{walk}{p, visit, arg}
-Calls the function \var{visit} with arguments
-\code{(\var{arg}, \var{dirname}, \var{names})} for each directory in the
-directory tree rooted at \var{p} (including \var{p} itself, if it is a
-directory).  The argument \var{dirname} specifies the visited directory,
-the argument \var{names} lists the files in the directory (gotten from
-\code{os.listdir(\var{dirname})}).
-The \var{visit} function may modify \var{names} to
-influence the set of directories visited below \var{dirname}, e.g., to
-avoid visiting certain parts of the tree.  (The object referred to by
-\var{names} must be modified in place, using \keyword{del} or slice
-assignment.)
-\end{funcdesc}