python 小程序 查找最大的python文件

使用os.path模块方法介绍

1. 扫描标准库目录

    I 通过glob模块遍历一个目录下面的所有文件，glob接收shell中常用文件名模式语法：“？”代表任何单个字符，*代表任意字符

 1 import glob
 2 import os
 3 import sys
 4 
 5 dirname = '/usr/lib/python3.5' if len(sys.argv) == 1 else sys.argv[1]
 6 allsize = []
 7 
 8 allpy = glob.glob(dirname + os.sep + '*.py')
 9 for filename in allpy:
10     filesize = os.path.getsize(filename)
11     allsize.append((filesize, filename))
12 
13 allsize.sort()
14 print(allsize[-2:])
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2. 扫描标准目录树

   I 通过os.walk方法来循环遍目录树

 1 import os
 2 import pprint
 3 
 4 dirname = '/usr/lib/python3.5'
 5 
 6 allsize = []
 7 for (curDir, subDir, fileHere) in os.walk(dirname):
 8     print(curDir)
 9     for filename in fileHere:
10         if filename.endswith('.py'):
11             fullname = os.path.join(curDir,filename)
12             filesize = os.path.getsize(fullname)
13             allsize.append((filesize,fullname))
14 
15 allsize.sort(key= lambda x:x[0])
16 pprint.pprint(allsize[-2:])
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3. 扫描模块搜索路径

   通过sys.path来查找，sys.path包含了所有导入的模块

 1 import sys
 2 import os
 3 import pprint
 4 
 5 allSize = []
 6 visited = {}
 7 for srcDir in sys.path:
 8     for(curDir, subDir, fileHere) in os.walk(srcDir):
 9         curDir = os.path.normpath(curDir)
10         fixCase = os.path.normcase(curDir)
11         if fixCase in visited:
12             continue
13         else:
14             visited[fixCase] = True
15         for filename in fileHere:
16             if filename.endswith('.py'):
17                 pypath = os.path.join(curDir, filename)
18                 try:
19                     pysize = os.path.getsize(pypath)
20                 except os.error as e:
21                     print(e)
22                 else:
23                     pylines = len(open(pypath, 'rb').readlines())
24                 allSize.append((pysize, pylines, pypath))
25 
26 allSize.sort(key=lambda x:x[0])
27 pprint.pprint(allSize[-2:])
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posted @ 2016-12-29 20:43  someOneHan  阅读(245)  评论(0)  编辑  收藏  举报