'''使用装饰器对文件进行读写操作'''

# def check_permission(func):

#     '''演示嵌套函数定义及使用'''

#     def wrapper(*args,**kwargs):

#         '''*args:接收任意多个实参并存入元组中；**kwargs:接收关键字参数显示赋值并存入字典中'''

#         if kwargs.get('username') != 'admin':

#             raise Exception('Sorry,You are not allowed')

#         return func(*args,**kwargs)

#     return wrapper

#

# class ReadWriteFile(object):

#     # 装饰器

#     @check_permission #read = check_permission(read)

#     def read(self,username,filename):

#         return open(filename,'r').read()

#

#     def write(self,username,filename,content):

#         with open(filename,'a+') as op:#采用with上下文管理语句

#             op.write(content)

#         #open(filename,'a+').write(content)

#     # 普通函数使用

#     writes = check_permission(write)

#

# t = ReadWriteFile()

# print(t.read(username='admin',filename=r'c:\Users\PGIDYSQ\Desktop\1111111e.gen'))

# print("*"*60)

# t.write('admin',filename=r'c:\Users\PGIDYSQ\Desktop\1111111e.gen',content='增加内容...')

# print("-"*60)

# with open(r'c:\Users\PGIDYSQ\Desktop\1111111e.gen') as fp:

#     #print(list(map(len,fp.readlines())))

#     print(list(enumerate(fp.readlines())))

#         # for line in fp:

#         # print(line)

#pickle使用

import pickle

srcurl =r'c:\Users\PGIDYSQ\Desktop\1111111e.gen'

dsturl =r'c:\Users\PGIDYSQ\Desktop\tset.bat'

with open(srcurl,encoding='utf-8') as src,open(dsturl,'wb') as dest:

    lines = src.readlines()

    pickle.dump(len(lines),dest)#行数

    for line in lines:

        pickle.dump(line,dest)

with open(r'c:\Users\PGIDYSQ\Desktop\tset.bat','rb') as fp:

    n = pickle.load(fp)#转换行数号

    for i in range(n):

        #print(pickle.load(fp))

        bb = pickle.load(fp)

        print(bb)

#struct使用

#struct.pack,unpack==》write(struct),read(9)

'''遍历指定目录下的所有子目录及文件'''

import os

def visitDir(path):

    if not os.path.isdir(path):

        print('Error')

        return

    for lists in os.listdir(path):

        sub_path = os.path.join(path,lists)

        print(sub_path)

        if os.path.isdir(sub_path):

            visitDir(sub_path)#递归调用

#visitDir(r'F:\UpSVNProject')

#采用os.walk()方法进行遍历

def visitDir2(path):

    if not os.path.isdir(path):

        print('Error')

        return

    list_dirs = os.walk(path)

    for root,dirs,files in list_dirs:

        for d in dirs:

            print(os.path.join(root,d))

        for f in files:

            print(os.path.join(root,f))

#visitDir2(r'F:\UpSVNProject')