python网络编程（requests）

import json,requests


requests比较好用，不要用urllib

#发送get请求
# url = 'http://api.nnzhp.cn/api/user/stu_info?stu_name=小黑马'
# req = requests.get(url) #发送get请求
# print(req.text) #获取结果，返回字符串
# print(req.json()) #获取结果直接就是字典，必须返回的是json串，才能用.json方法。

#发送post请求
# url = 'http://api.nnzhp.cn/api/user/login'
# data =  {'username':'niuhanyang','passwd':'aA123456'}
# req = requests.post(url,data) #发送post请求，第一个参数是url，第二个参数是请求的数据
# print(req.json())

#入参是json的
# url = 'http://api.nnzhp.cn/api/user/add_stu'
# data =  {'name':'丁飞','grade':'巨蟹座','phone':31971891223}
# req = requests.post(url,json=data) #发送post请求，第一个参数是url，第二个参数是请求的数据，字典
# print(req.json())
#添加cookie

# url = 'http://api.nnzhp.cn/api/user/gold_add'
# data =  {'stu_id':231,'gold':1000}
# cookie = {'niuhanyang':'6d195100b95a43046d2e385835c6e2c2'}
# req = requests.post(url,data,cookies=cookie)
# print(req.json())

#添加header
# url='http://api.nnzhp.cn/api/user/all_stu'
# mpp = {'Referer':'http://api.nnzhp.cn/','User-Agent':'Chore'}
# res = requests.get(url,headers=mpp)
# print(res.json())

#上传文件
# url = 'http://api.nnzhp.cn/api/file/file_upload'
# f = open(r'C:\Users\bjniuhanyang\Desktop\ad.cpm.schedulingInfo.v1.json','rb')
# r = requests.post(url,files={'file':f})
# print(r.json())

#下载文件（图片，音频、视频）
# url= 'http://www.besttest.cn/data/upload/201710/f_36b1c59ecf3b8ff5b0acaf2ea42bafe0.jpg'
# r  = requests.get(url)
# print(r.status_code)  #获取请求的状态码
# print(r.content)  #获取返回结果二进制格式的
# fw = open(r'bt.jpg','wb')
# fw.write(r.content)
# fw.close()

#保存网页
url = 'http://www.nnzhp.cn/archives/630'
r = requests.get(url)
f = open('nnzhp.html','wb')
f.write(r.content)
f.close()