python好用的模块--requests

import requests
# #发送get请求
# url='http://api.nnzhp.cn/api/user/stu_info'
# data={'stu_name':'小黑'}
# req=requests.get(url,params=data)
# print(req.json())#返回值是字典 单引号
# print(req.text)#返回值是string,json串 双引号
#这是post请求，需要传参
# url='http://api.nnzhp.cn/api/user/login'
# data={'username':'niuhanyang','passwd':'aA123456'}
# req=requests.post(url,data)
# print(req.json())

# #入参是json类型的
# import  random
# phone=random.randint(1000000000,999999999999999)
# url='http://api.nnzhp.cn/api/user/add_stu'
# data={
#     'name':'fyr',
#     'grade':'1班',
#     'phone':phone,
#     'sex':'男',
#     'age':28,
#     'addr':'北京'
# }
# req=requests.post(url,data)

# #4、入参是cookie
# url='http://api.nnzhp.cn/api/user/gold_add'
# data={
#     'stu_id':471,'gold':1000
# }
# cookie={'nhy':'337ca4cc825302b3a8791ac7f9dc4bc6'}
# req=requests.post(url,data,cookies=cookie)
# 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、入参是文件
# url='http://api.nnzhp.cn/api/file/file_upload'
# data={
#     'file':open('搭建测试环境',encoding='utf-8')
# }
# req=requests.post(url,files=data)
# print(req.json())

#7、下载一个文件或者下载一个图片从网上
url='http://www.nnzhp.cn/wp-content/uploads/2018/01/soup.jpg'
req=requests.get(url)
req.content#返回的是二进制的文件

print(req.content)
fw=open('a.jpg','wb')#wb是写二进制
fw.write(req.content)