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#!/usr/bin/python

# ! coding=utf-8

import os

# 操作系统接口

def demo1():

os.getcwd()

os.chdir(path=("/home/fang"))

print(os.getcwd())

dir(os)

import urllib.request

def demo2():

content = urllib.request.urlopen("http://www.baidu.com")

def demo4():

def demo5(pair):

return pair[1];

pairts = [(1, 'one'), (2, 'two'), (3, 'gewe')]

pairts.sort(key=demo5)

print(pairts)

def strinTest():

string = "hello world";

bytesO = string.encode(encoding="UTF-8")

decode = bytesO.decode("utf-8", "strict")

# print(decode)

# print(bytesO)

string.index(string, __start=0, __end=len(string))

import os

import sys

def fun2():

list1 = ["sdgsd", 34, "sgwegwe", "sdge"]

list1.append()

def func3():

list1 = ["342", 45, 46, "sfgdg", {3532, "sgsd"}];

# for event in list1.__iter__():

# print(event)

# for event in list1:

# print(event)

for event in list1.__iter__().__iter__().__iter__().__iter__():

print(event)

class MyUser():

"""

用户名信息

"""

name = ""

password = ""

def __iter__(self):

print(self.name, self.password, sep="\n")

if __name__ == '__main__':

sys.path.append("/home/fang/python/python")

import Demo1

# func3()

for attr in MyUser:

pass