import os

choice={

    "1":"创建文件",

    "2":"查看当前路径",

    "3":"查找文件名",

    "4":"退出程序"

}

def mkdir():

    file_path = input("please input your file_path:").strip()

    try:

        os.chdir(file_path)

        print("%s存在，不需要重新创建" % file_path)

    except:

        print("%s不存在，开始创建文件" % file_path)

        os.makedirs(file_path)

        print("%s创建完成" % file_path)

def check():

    file_name = input("please input your file_name:").strip()

    try:

        print("%s绝对路径为:%s"%(file_name,os.path.abspath(file_name)))

    except:

        print("%s不存在，开始创建文件" % file_name)

def search():

    file_dir = input("please input your file_dir:").strip()

    print("当前目录为：%s，子目录和所有文件为:%s" % (os.getcwd(), os.listdir(os.getcwd())))

while True:

    for key in choice:

        print(key,choice[key])

    num=int(input("please input your choice:").strip())

    if num==1:

       mkdir()

    elif num==2:

        check()

    elif num == 3:

        search()

    elif num==4:

        break

#将三次登陆锁定的作业改为：

# python login.py -u alex -p 123456 输入的形式

# (-u,-p是固定的，分别代表用户名和密码)

import sys

if(sys.argv[sys.argv.index("-u")+1] == "egon" and sys.argv[sys.argv.index("-p")+1] == "somebody"  ):

    print("Congratulations")

else:

    print("Error")

#!/bin/python3

# -*- coding:utf-8 -*-

''' python login auth example  '''

#imports

import getpass,os,sys

#functions

def lock_user(username):

    ''' username -> modify userlist file '''

    temp_str = ""

    with open("userlist.swp",'w') as file_write , open("userlist",'r') as file_read:

        for line in file_read:

            temp_list = eval(line)

            if temp_list[0] == username:

                temp_list[2] += 1

                temp_str += str(temp_list)+"\n"

                continue

            temp_str += line

        file_write.write(temp_str)

    os.rename("userlist.swp", "userlist")

def unlock_user(username):

    ''' username -> modify userlist file '''

    temp_str = ""

    with open("userlist.swp",'w') as file_write , open("userlist",'r') as file_read:

        for line in file_read:

            temp_list = eval(line)

            if temp_list[0] == username:

                temp_list[2] = 0

                temp_str += str(temp_list)+"\n"

                continue

            temp_str += line

        file_write.write(temp_str)

    os.rename("userlist.swp", "userlist")

def user_input():

    ''' input username&&password -> return username&&password '''

    if not "-u" in sys.argv and not "-p" in sys.argv:

        print("help:\n-u [username] -p [password]")

        exit()

    username = sys.argv[sys.argv.index("-u")+1]

    password = sys.argv[sys.argv.index("-p")+1]

    # username = input("username:")

    # password = getpass.getpass("password:")

    return username,password

def check_user(username,password = '',type = 'check'):

    '''

        username,password,check -> return t||f #username password lock check

        username,password,lock -> return  t||f #username locked or not

    '''

    flag = False

    with open("userlist",'r') as file_read:

        for line in file_read:

            temp_list = eval(line)

            if type == 'check':

                if username == temp_list[0] and password == temp_list[1] \

                and temp_list[2] < 2:

                    return True #user not locked and correct user and pass

            if type == 'lock':

                if username == temp_list[0] and temp_list[2] >= 2:

                    return True #user has been locked

        else:

            return False

#login decorator

def auth(func):

    def wrapper(*args,**kwargs):

        username,password = user_input() #get input

        # if not username and not password:

        #   print("incorrect username or password!")

        #   exit()

        if check_user(username, password,type='check'): #juge username and password correct or not

            print("login success!")

            unlock_user(username)

            func(username) #shell function

        else:

            if check_user(username, password, type='lock'): #juge user locked or not

                print("This account has been locked!")

            else:

                lock_user(username) #lock count += 1

                print("incorrect username or password!")

    return wrapper

#shell function

@auth

def login_index(username = ""):

    ''' shell program '''

    while True:

        command = input("%s>" %username) #ask input command

        if command == 'ls':

            print(

'''

bin   dev  home  lib64       media  opt   root  sbin  sys  usr

boot  etc  lib   lost+found  mnt    proc  run   srv   tmp  var

''')

        if command == 'exit': #exit shell

            print("byebye!")

            exit()

def main():

    ''' main program '''

    login_index()

#program entry

if __name__ == '__main__':

    main()

#main.py

import sys,os

sys.path.append("E:\python学习\day33常用模块\作业\dir1")

print(sys.path)

--->['E:\\python学习\\day33常用模块\\作业\\dir2', 'E:\\python学习', 'C:\\Users\\Administrator.PC-201509301704\\AppData\\Local\\Programs\\Python\\Python36\\python36.zip', 'C:\\Users\\Administrator.PC-201509301704\\AppData\\Local\\Programs\\Python\\Python36\\DLLs', 'C:\\Users\\Administrator.PC-201509301704\\AppData\\Local\\Programs\\Python\\Python36\\lib', 'C:\\Users\\Administrator.PC-201509301704\\AppData\\Local\\Programs\\Python\\Python36', 'C:\\Users\\Administrator.PC-201509301704\\AppData\\Local\\Programs\\Python\\Python36\\lib\\site-packages', 'E:\\python学习\\day33常用模块\\作业\\dir1']

import hello

print(hello.add(1,2))

--->3

import time

c=time.localtime()

print(c)    #当前时间

--->time.struct_time(tm_year=2017, tm_mon=4, tm_mday=26, tm_hour=23, tm_min=40, tm_sec=54, tm_wday=2, tm_yday=116, tm_isdst=0)

t=time.time()-3600*24*3

print(time.localtime(t))

--->time.struct_time(tm_year=2017, tm_mon=4, tm_mday=23, tm_hour=23, tm_min=44, tm_sec=30, tm_wday=6, tm_yday=113, tm_isdst=0)

print(time.localtime(t).tm_wday)

--->6