第三方库requests

requests库

# 1.记得安装 第三方 模块 requests
# pip install requests

import requests

url = 'http://www.baidu.com'
response = requests.get(url)

# content属性 返回的类型 是bytes
data = response.content.decode('utf-8')

# text 属性 返回的类型 是文本str
data = response.text

print(type(data))

带header

# 1.记得安装 第三方 模块 requests
# pip install requests

import requests

class RequestSpider(object):
    def __init__(self):
        url = 'https://www.baidu.com'
        headers = {
             'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.67 Safari/537.36'
        }
        self.response = requests.get(url, headers=headers)

    def run(self):

        data = self.response.content

        # 1.获取请求头
        request_headers = self.response.request.headers

        # 2.获取相应头
        coderesponse_headers = self.response.headers

        # 3.响应状态码
        code = self.response.status_code

        # 4. 请求的cookie
        request_cookie = self.response.request._cookies
        print(request_cookie)
        # 5. 响应的cookie
        response_cookie = self.response.cookies
        print(response_cookie)

RequestSpider().run()

参数 自动转译

# https://www.baidu.com/s?wd=%E7%BE%8E%E5%A5%B3&rsv_spt=1&rsv_iqid=0xefb8b43600013949&issp=1&f=8&rsv_bp=1&rsv_idx=2&ie=utf-8&rqlang=cn&tn=baiduhome_pg&rsv_enter=1&oq=%25E5%25A4%25B4%25E6%259D%25A1&rsv_t=6e3aSjYtw0WgEg7MAIuUlOc3D5lwFBJUVw3KsdkhkWYhZWcNMn9kLBO12GflHlOeUHxx&inputT=506&rsv_pq=81d8f9470001b348&rsv_sug3=19&rsv_sug1=16&rsv_sug7=100&bs=%E5%A4%B4%E6%9D%A1

import requests

# 参数 自动转译

# url = 'https://www.baidu.com/s?wd=美女'
url = 'https://www.baidu.com/s'

params = {
    'wd':"美女"
}
headers = {
    'User-Agent':'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.67 Safari/537.36'
}

response = requests.get(url,headers=headers, params=params)

data = response.content.decode()

with open('baidu.html', 'w') as f:
    f.write(data)

# 发送post 和添加参数
requests.post(url,data=(参数{}),json=(参数))

返回json

# https://www.baidu.com/s?wd=%E7%BE%8E%E5%A5%B3&rsv_spt=1&rsv_iqid=0xefb8b43600013949&issp=1&f=8&rsv_bp=1&rsv_idx=2&ie=utf-8&rqlang=cn&tn=baiduhome_pg&rsv_enter=1&oq=%25E5%25A4%25B4%25E6%259D%25A1&rsv_t=6e3aSjYtw0WgEg7MAIuUlOc3D5lwFBJUVw3KsdkhkWYhZWcNMn9kLBO12GflHlOeUHxx&inputT=506&rsv_pq=81d8f9470001b348&rsv_sug3=19&rsv_sug1=16&rsv_sug7=100&bs=%E5%A4%B4%E6%9D%A1

import requests
import json

url = 'https://api.github.com/user'
headers = {
    'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.67 Safari/537.36'
}

# 这个 网址 返回的内容不是html 而是标准的json
response = requests.get(url, headers=headers)

# str
# data = response.content.decode()
# # str-- dict
# data_dict = json.loads(data)

# json() 自动将json字符串 转换成Python dict list
data = response.json()

print(data['message'])