第0007题：有个目录，里面是你自己写过的程序，统计一下你写过多少行代码。包括空行和注释，但是要分别列出来。
解题思路：
使用os模块的listdir()方法或walk()方法得到目录下自己的程序文件。然后读取每个文件，分别统计代码行、空行和注释。
代码如下：
#! /usr/bin/env python
#coding=utf-8
import os
def get_files(path):
files = os.listdir(path)
files_path = []
for fi in files:
fi_path = path + '\\' + fi
if os.path.isfile(fi_path):
if fi.split('.')[-1]=='py':
files_path.append(fi_path)
elif os.path.isdir(fi_path):
files_path += get_files(fi_path)
return files_path
def count(files):
line_of_code, blank, comments = 0, 0, 0
for filename in files:
f = open(filename, 'rb')
for line in f:
line = line.strip()
line_of_code += 1
if line == '':
blank += 1
elif line[0] == '#' or line[0] == '/':
comments += 1
f.close()
return (line_of_code, blank, comments)
if __name__ == '__main__':
files = get_files('.')
print files
lines = count(files)
print 'Line(s): %d, black line(s): %d, comments line(s): %d' % (lines[0], lines[1], lines[2])
