Script:


import os

class Tree:
    def __init__(self, dir):
        self.dir = dir
        if not os.path.isdir(dir):
            raise "Bad data", "parameter is not a directory"
        self.indent_level     = 0
        self.indent_increment = 4
        self.list             = []
        self.root             = dir

    def SetIndentIncrement(self, indent_increment = 2):
        if indent_increment < 1:
            raise "Bad data", "indent increment must be > 0"
        self.indent_increment = indent_increment

    def Get(self):
        '''Returns the directory tree as a list of lines.
        '''
        self.list.append(self.dir)
        self.__get_dir(dir)
        return self.list

    def __get_dir(self, dir):
        '''Return the indicated directory and all subdirectories.
        '''
        currdir = os.getcwd()
        print "xx currdir =", currdir
        newdir = os.path.join(self.root, dir)
        print "xx", newdir
        os.chdir(newdir)
        dirlist = os.listdir(".")
        dirlist.sort()
        self.indent_level = self.indent_level + self.indent_increment
        for ix in xrange(len(dirlist)):
            if not os.path.isdir(dirlist[ix]):
                continue
            num_indents = self.indent_level / self.indent_increment
            str = " " * self.indent_increment
            str = str * num_indents + dirlist[ix]
            self.list.append(str)
            self.__get_dir(dirlist[ix])
        self.indent_level = self.indent_level - self.indent_increment
        os.chdir("..")

if __name__ == "__main__":
    import sys
    dir = sys.argv[1]
    print dir
    t = Tree(dir)
    lines = t.Get()
    for line in lines:
        print line