python实现自动生成目录树的方法示例源码

# encoding: utf-8

import os   
class dir(object):   
    def __init__(self):   
        self.SPACE = ""   
        self.list = []

    def getCount(self, url):  
        files = os.listdir(url)  
        count = 0;  
        for file in files:  
            myfile = url + "\" + file  
            if os.path.isfile(myfile):  
                count = count + 1  
        return count

    def getDirList(self, url):   
        files = os.listdir(url)   
        fileNum = self.getCount(url)  
        tmpNum = 0

        for file in files:   
            myfile = url + "\" + file   
            size = os.path.getsize(myfile)

            if os.path.isfile(myfile):   
                tmpNum = tmpNum +1  
                if (tmpNum != fileNum):  
                    self.list.append(str(self.SPACE) + "├─" + file + "n")  
                else: #www.iplaypy.com 
                    self.list.append(str(self.SPACE) + "└─" + file + "n")

            if os.path.isdir(myfile):   
                self.list.append(str(self.SPACE) + "├─" + file + "n")   
                # change into sub directory  
                self.SPACE = self.SPACE + "│  "   
                self.getDirList(myfile)   
                # if iterator of sub directory is finished, reduce "│  "   
                self.SPACE = self.SPACE[:-4]   
        return self.list

    def writeList(self, url):   
        f = open(url, 'w')   
        f.writelines(self.list)   
        print "ok"   
        f.close()

if __name__ == '__main__':   
    d = dir()   
    d.getDirList("c:/windows") # input directory  
    d.writeList("c:/1.txt") # write to file