import osimport sysimport imp from TreeWidget import TreeItemfrom ClassBrowser import ClassBrowser, ModuleBrowserTreeItem class PathBrowser(ClassBrowser):     def __init__(self, flist):        self.init(flist)     def settitle(self):        self.top.wm_title("Path Browser")        self.top.wm_iconname("Path Browser")     def rootnode(self):        return PathBrowserTreeItem() class PathBrowserTreeItem(TreeItem):     def GetText(self):        return "sys.path"     def GetSubList(self):        sublist = []        for dir in sys.path:            item = DirBrowserTreeItem(dir)            sublist.append(item)        return sublist class DirBrowserTreeItem(TreeItem):     def __init__(self, dir, packages=[]):        self.dir = dir        self.packages = packages     def GetText(self):        if not self.packages:            return self.dir        else:            return self.packages[-1] + ": package"     def GetSubList(self):        try:            names = os.listdir(self.dir or os.curdir)        except os.error:            return []        packages = []        for name in names:            file = os.path.join(self.dir, name)            if self.ispackagedir(file):                nn = os.path.normcase(name)                packages.append((nn, name, file))        packages.sort()        sublist = []        for nn, name, file in packages:            item = DirBrowserTreeItem(file, self.packages + [name])            sublist.append(item)        for nn, name in self.listmodules(names):            item = ModuleBrowserTreeItem(os.path.join(self.dir, name))            sublist.append(item)        return sublist     def ispackagedir(self, file):        if not os.path.isdir(file):            return 0        init = os.path.join(file, "__init__.py")        return os.path.exists(init)     def listmodules(self, allnames):        modules = {}        suffixes = imp.get_suffixes()        sorted = []        for suff, mode, flag in suffixes:            i = -len(suff)            for name in allnames[:]:                normed_name = os.path.normcase(name)                if normed_name[i:] == suff:                    mod_name = name[:i]                    if not modules.has_key(mod_name):                        modules[mod_name] = None                        sorted.append((normed_name, name))                        allnames.remove(name)        sorted.sort()        return sorted def main():    import PyShell    PathBrowser(PyShell.flist)    if sys.stdin is sys.__stdin__:        mainloop() if __name__ == "__main__":    main()