21天打造分布式爬虫-requests库（二）

import requestsresponse = requests.get("https://www.baidu.com/")
#text返回的是unicode的字符串，可能会出现乱码情况
# print(response.text)#content返回的是字节，需要解码
print(response.content.decode('utf-8'))# print(response.url) #https://www.baidu.com/
# print(response.status_code) #200
# print(response.encoding) #ISO-8859-1

import requestsparams = {
'wd':'python'
}
headers = {
'User-Agent':'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.140 Safari/537.36'
}response = requests.get("https://www.baidu.com/s",params=params,headers=headers)#content返回的是字节，需要解码
with open('baidu.html','w',encoding='utf-8') as f:
f.write(response.content.decode('utf-8'))

import requestsurl = "https://www.lagou.com/jobs/positionAjax.json?city=%E5%8C%97%E4%BA%AC&needAddtionalResult=false"data = {
'first':'true',
'pn':1,
'kd':'python'
}headers = {
"User-Agent":"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.140 Safari/537.36",
"Referer":"https://www.lagou.com/jobs/list_python?city=%E5%8C%97%E4%BA%AC&cl=false&fromSearch=true&labelWords=&suginput="
}response = requests.post(url,data=data,headers=headers)
# print(response.text)
print(type(response.text)) #<class 'str'>
print(type(response.json())) #<class 'dict'>print(response.json()) #获取为字典的形式

import requestsproxy = {'http':'115.210.31.236.55:9000'}response = requests.get("https://www.baidu.com/",proxies=proxy)print(response.content.decode('utf-8'))

# _*_ coding:utf-8 _*_import requests# 1. 创建session对象，可以保存Cookie值
ssion = requests.session()# 2. 处理 headers
headers = {'User-Agent':'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.101 Safari/537.36'}# 3. 需要登录的用户名和密码
data = {"email":"158xxxxxxxx", "password":"pythonxxxxxxx"}# 4. 发送附带用户名和密码的请求，并获取登录后的Cookie值，保存在ssion里
ssion.post("http://www.renren.com/PLogin.do", data = data)# 5. ssion包含用户登录后的Cookie值，可以直接访问那些登录后才可以访问的页面
response = ssion.get("http://zhibo.renren.com/news/108")# 6. 打印响应内容
print(response.text)