第八周学习笔记

好用的模块

import requests

#1、发get请求
# url = 'http://api.nnzhp.cn/api/user/stu_info'
# data = {'stu_name':'小黑'}  #请求数据
# req = requests.get(url,params=data)  #发get请求
# print(req.json())  #字典
# print(req.text)    #string，json串

#返回的都是什么
#返回的类型是什么
#中文的好使吗
#2 、发post请求
# url = 'http://api.nnzhp.cn/api/user/login'
# data = {'username':'niuhanyang','passwd':'aA123456'}  #请求数据
# req = requests.post(url,data)  #发送post请求
# print(req.json())

#3、入参是json类型的
# import random
# phone=random.randint(10000000000,99999999999)
# url='http://api.nnzhp.cn/api/user/add_stu'
# data =  {
#     "name":"小1",
#     "grade":"天蝎座",
#     "phone":phone,
#     "sex":"男",
#     "age":28,
#     "addr":"河南省济源市北海大道32号"
#   }
# req = requests.post(url,json=data)
# print(req.json())

# 4、添加cookie
# url = 'http://api.nnzhp.cn/api/user/gold_add'
# data = {'stu_id':468,'gold':10000}
# djl = {'niuhanyang':'337ca4cc825302b3a8791ac7f9dc4bc6'}
# req = requests.post(url,data,cookies=djl)
# print(req.json())

#5、添加header
# url = 'http://api.nnzhp.cn/api/user/all_stu'
# header = {
#     'Referer':'http://api.nnzhp.cn/'
# }
# req = requests.get(url,headers=header)
# print(req.json())

#6、上传文件
# url= 'http://api.nnzhp.cn/api/file/file_upload'
# data = {
#     'file':open(r'C:UsersjniuhanyangDesktop图6bd9026dt935575932465&690.jpg','rb')
# }
# req= requests.post(url,files=data)
# print(req.json())

#7、下载文件
url = 'http://up.mcyt.net/?down/46779.mp3'
req = requests.get(url)
fw = open('aaa.mp3','wb')
fw.





内置函数

#zip
l1 = ['a','b','c','e','f','g']
l2 = [1,2,3]
l3=['A','B','C']
L4=['牛','牛','niu']
#zip，就是把俩list，合并到一起,如果想同时循环2个list的时候，
for a,b,c,d in zip(l1,l2,l3,L4):
   print(a,b,c,d)


# 下载一个文件，或者下个图片
#map  #她是帮你循环调用函数的
# def my(num):
#  return str(num)
# lis = [1,2,3,4,5,6,7,8,9]
# res = list(map(my,lis))
# print(res)
# new_lis = []
# for i in lis:
#  new_lis.append(my(i))

#filter 也是帮你循环调用函数的，过滤

def even(num):
   if num%2==0:
      return True
   return False
lis = [1,2,3,4,5,6,7,8,9]
res = filter(even,lis)
print('filter..',list(res))  #filter只保留，返回为真的数据
res2 = map(even,lis)
print('map..',list(res2))  #map是帮你循环调用函数，这个函数返回就保存什么。
#结果是什么，它和map和的结果有什么区别


网络编辑

from urllib import request,parse
# url = 'http://www.nnzhp.cn'
# req = request.urlopen(url)  #打开一个url,发get请求
# content = req.read().decode() #获取返回结果
# fw = open('baidu.html','w',encoding='utf-8')
# fw.write(content)
import json
# url='http://api.nnzhp.cn/api/user/stu_info?stu_name=xiaohei'
# req = request.urlopen(url)  #打开一个url,发get请求
# content = req.read().decode() #获取返回结果
# res_dic = json.loads(content) #返回的结果转成字典
# if res_dic.get('error_code') == 0:
#  print('测试通过')
# else:
#  print('测试失败',res_dic)

url = 'http://api.nnzhp.cn/api/user/login'
data = {
   'username':'admin',
   'passwd':'aA123456'
} #请求数据
data = parse.urlencode(data)  #urlencode,自动给你拼好参数
# xx=xx&xx=11
req = request.urlopen(url,data.encode()) #发post请求
print(req.read().decode())

# 网络爬虫，从其他的网站上，获取一些有用的内容。