1. 小程序：根据用户输入选择可以完成以下功能：
创意文件，如果路径不存在，创建文件夹后再创建文件
能够查看当前路径
在当前目录及其所有子目录下查找文件名包含指定字符串的文件
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
2. 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）
#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)+"
"
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)+"
"
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:
-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()
3. 层级结构：
dir1
---hello.py
dir2
---main.py
其中，hello.py：
def add(x,y):
return x+y
main.py如何能调用到hello.py中的add函数？
参考博客结尾的内容，单独导入包。http://www.cnblogs.com/xuyaping/p/6797032.html
注：此题中导入的模块只是一个简单的模块，和博客中导入模块不同的是没有__init__文件，更简单些。
#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
4. 显示当前时间三天后是星期几？
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