posixpath.py 文件源码

def abspath(path):
    """Return an absolute path."""
    if not isabs(path):
        if isinstance(path, _unicode):
            cwd = os.getcwdu()
        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).