Python之练习Demo

 1 #coding:GBK
 2 import os;
 3 
 4 def SortList(item):
 5     return item[1];
 6 
 7 def ReadSize(fileName):
 8     return float(os.path.getsize(fileName));
 9 
10 def WriteAll(path):
11     l = []
12     loger = open("test.log","w");
13     writer = open("path.txt","w");
14     reader = open("path.txt","r");
15     size = 0;
16     for root,dirs,files in os.walk(path):
17         for filesPath in files:
18             try:
19                 fllePath = os.path.join(root,filesPath);
20                 fileSize = float(ReadSize(fllePath)/1024);
21                 size += fileSize;
22                 x = (fllePath,int(fileSize));
23                 l.append(x);
24             except:
25                 loger.write("读取:"+os.path.join(root,filesPath)+"文件大小失败!");
26                 continue;
27     l = sorted(l,key=SortList,reverse=True);
28     for item in l:
29         strTmp = "";
30         if float(item[1]/1024) > 1024:
31             strTmp = item[0]+" "+str(int(float(item[1]/1024/1024)))+"GB\n";
32         elif item[1] > 1024:
33             strTmp = item[0]+" "+str(int(float(item[1]/1024)))+"MB\n";                           
34         else:
35             strTmp = item[0]+" "+str(item[1])+"KB\n";
36                                      
37         writer.write(strTmp);
38     writer.write("共使用磁盘空间:"+str(float(size/1024))+"MB");
39     loger.close();
40     writer.close();
41     print(reader.read());
42     reader.close();
43 
44 fileName = os.getcwd();
45 WriteAll(fileName);
46 raw_input("END...");