目录操作习题

import os
import os.path

def count_lines(fp):
    line_number = 0
    blank_line_number = 0
    code_line_number =0
    comment_number = 0
    try:
        for line in fp:
            line_number+=1
            if line.strip()=="":
                blank_line_number+=1
                continue
            elif line.strip().startswith("#"):
                comment_number+=1
            else:
                code_line_number+=1 
        return line_number,blank_line_number,comment_number,code_line_number
    except:
        print("统计文件%s代码时候出错" %fp.name)

def count_code_line(file_path):
    if not os.path.exists(file_path):
        print("文件的路径不存在，请重新输入！")
        return None
    line_number = 0
    blank_line_number = 0
    code_line_number =0
    comment_number = 0
    try:
        fp = open(file_path,"r",encoding="gbk")
        return count_lines(fp)
    except:
        fp = open(file_path,"r",encoding="utf-8")
        return count_lines(fp)

#print(count_code_line("e:\\a.txt"))

line_number = 0
blank_line_number = 0
code_line_number =0
comment_number = 0
for root, dirs, files in os.walk("e:\\test",topdown=False) :
    print(u"当前目录:",root) #打印目录绝对路径
    for name in files :
        print(u‘文件名：‘,os.path.join(root,name) )#打印文件绝对路径
        file_path = os.path.join(root,name)
        count_result = count_code_line(file_path)
        line_number += count_result[0]
        blank_line_number += count_result[1]
        code_line_number +=count_result[2]
        comment_number += count_result[3]


print("""
总行数：%s
空白行数：%s
注释行数：%s
有效代码行数：%s
"""  %(line_number,blank_line_number,code_line_number,
comment_number))