Python3之OS模块文件操作(摘自网络)

#-*-coding:utf-8-*-__author__ = ‘AA‘

import os

class File(object):

def __init__(self, pathname):        self.pathname = pathname

#删除文件    def delectFile(self, filename):        fn = self.pathname + str(filename).strip()        if os.path.isfile(fn):            os.remove(fn)            if(not os.path.isfile(fn)):                print(‘*Tips: File: ‘, fn, ‘ has been deleted.‘)        else:            print(‘*Tips: File: ‘, fn, ‘ not found.‘)

#创建文件    def createFile(self, filename):        fn = self.pathname + str(filename).strip()        if not os.path.isfile(fn):            open(fn, mode=‘w‘, encoding=‘UTF-8‘).close()

#获取文件大小    def getFileSize(self, filename):        k_size = round(os.stat(filename).st_size / 1024, 1)        if k_size > 1024:            m_size = round(k_size / 1024, 1)            if m_size > 1024:                return str(round(m_size / 1024, 1)) + ‘G‘            else:                return str(m_size) + ‘M‘        else:            return str(k_size) + ‘K‘

#列出目录下所有文件夹和文件    def listPath(self):        for root, dirs, files in os.walk(self.pathname):            print(root)            for dir in dirs:                print(‘\t‘, dir)            for file in files:                print(‘\t‘, file, ‘\t‘, self.getFileSize(root+‘\\‘+file))

#让用户选择操作def selectOperation():    print(‘\n*1.List all directories and files.‘)    print(‘*2.Create file.‘)    print(‘*3.Delete file.‘)    print(‘*4.Exit.‘)

s = input("*Please select an operation:")    return s

if __name__ == ‘__main__‘:    pathname = input(‘Input a pathname: ‘)    file = File(pathname)    while True:        selectNum = selectOperation()        if selectNum == ‘1‘:            file.listPath()        elif selectNum == ‘2‘:            fn = input("Input a filename: ")            file.createFile(fn)        elif selectNum == ‘3‘:            fn = input("Input a filename: ")            file.delectFile(fn)        elif selectNum == ‘4‘:            break;原始地址：http://blog.csdn.net/myatlantis/article/details/47376919