python基础知识——基于python3.6

语法糖

# # -*- coding: utf-8 -*-
# #-------------
# #--------- 语法糖---------------
# #-----------------------------------
# def  a(fun):
#     print('aaaaaa')
#     fun()
#     print('bbbbb')
#     return (
#
#     )
# @a
# def fun():
#     print('hello')#要注入的

　　正则match

# 搜索
#---------------------
# import re
# point = re.match('dd','www.nuaud.nadn')
# if point is not None:
#     print(point.span())
# else:
#     print('no')
# import re

　　用正则表达式搜索8位或11位手机号

------------------------------
#电话号码
#---------------------------
# point = re.search('^[0-9]{8}$|^[0-9]{11}$', '125667889999')
# if point is not None:
#     print(point.span())
# else:
#     print('no')
#------------------

　　用正则表达式查找日期

#查找日期
#-----------------------------
# 2017-03-05
# import re
# point = re.search('^[0-9]{4}-[0-1]{0,1}-[0-3]{0,1}-[0-9]{1}', '125667889999')
# if point is not None:
#     print(point.span())
# else:
#     print('no')

　　get方式

#get方式
#--------------------------
# import urllib.request
# f=urllib.request.urlopen("http://m.cnblogs.com/")
# s=f.read()
# print(s)
#------------

　　正则提取

#正则提取
# #--------------------------
# import re
# from urllib.request import urlopen
# f = urlopen("http://www.meishij.net/")
# s = f.read()
# s=s.decode('utf-8')
# mm = re.findall('<a href=\"(.*)\">(.*)</a>',str(s))
# print((mm))
# print((mm)[0][1])

　　爬虫爬一个网站

#爬招聘网站------------------------------
#---------------------------------
# import re
# from urllib.request import urlopen
# from urllib.request import Request
# headers = {'User-Agent':'Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.6) Gecko/20091201 Firefox/3.5.6'}
# url = "http://sou.zhaopin.com/jobs/searchresult.ashx?jl=%E5%8C%97%E4%BA%AC&kw=python&sm=0&p=1"
# req_timeout = 5#______________________________--------------添加模拟浏览器协议头
# req = Request(url=url,headers=headers)
# f = urlopen(req,None,req_timeout)
# s = f.read()
# s = s.decode('utf-8')
# mm = str(s)

　　用代码新建一个文件，并写入txt文档

#新建file  写入txt——————————————————
#————————————————
# f=open("file/test.txt",'w')
# f.write("First line 1.\n" )
# f.write("First line 2.\n" )
# f.write("First line 3.\n")