requests模块

想要通过python来发送网络请求，可以使用内置的urllib2模块

但是requests模块使用起来更简洁 

pip install requests

1、发送get请求

url1 = 'http://118.24.3.xx/api/user/stu_info'
res = requests.get(url1,params={'stu_name':'xiaohei'})#发送get请求，params填写参数
print(res.json())#返回数据是json，把结果转为字典

2、发送post请求

url2 = 'http://118.24.3.xx/api/user/login'
data = {"username":"niuhanyang","passwd":"aA123456"}#发送post请求，data填写参数
res = requests.post(url2,data=data)
print(res.json())

3、发送post请求，json传参

url3 = 'http://118.24.3.xx/api/user/add_stu'
data =  {
    "name":"requeslina",
    "grade":"天蝎座",
    "phone":18611532955,
    "sex":"男",
    "age":28,
    "addr":"河南省济源市北海大道32号"
  }
res = requests.post(url3,json=data)#post请求，json传参
print(res.json())

4、带cookies的请求

url4 = 'http://118.24.3.xx/api/user/gold_add'
data = {'stu_id':15,'gold':200}
cookie = {'niuhanyang':'abd9a0995f4696e1a60133220b32037a'}
res = requests.post(url4,data=data,cookies=cookie)#带cookie的请求
print(res.json())#json直接把返回结果转成字典

5、带header的请求

url5 = 'http://118.24.3.xx/api/user/all_stu'
header = {'Referer':'http://api.nnzhp.cn/'}
res = requests.get(url5,headers=header)#带header的请求
print(res.json())#json直接把返回结果转成字典

6、字符串的响应数据

url6 = 'http://www.nnzhp.cn'
res = requests.get(url6)
print(res.text)#字符串的响应数据

7、请求获取二进制数据，可以用来下载

url7 ='http://qiniuuwmp3.changba.com/1084511584.mp3'
res = requests.get(url7)
print(res.content)#获取二进制的数据
with open('魔鬼中的天使.mp3','wb') as fw:#wb是写二进制的东西 rb读二进制的
    fw.write(res.content)
print(res.status_code)#响应状态码

8、下载一个图片

url8 ='https://aliimg.changba.com/cache/photo/855e5493-f018-44db-8892-c8660649327b_640_640.jpg'
res = requests.get(url8,verify=False)#如果是https 加verify=False参数
with open('lina.jpg','wb') as fw:
    fw.write(res.content)

9、上传文件请求

url9 = "http://118.24.3.xx/api/file/file_upload"
data = {'file':open('lina.jpg','rb')}
res = requests.post(url9,files=data)#上传文件
print(res.text)