python爬蟲基礎(chǔ)教程：requests庫(kù)（二）代碼實(shí)例

import requests
'''
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'''
response = requests.get("https://www.baidu.com/")
#text返回的是unicode的字符串，可能會(huì)出現(xiàn)亂碼情況
# print(response.text)
 
#content返回的是字節(jié)，需要解碼
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 requests
 
params = {
  '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返回的是字節(jié)，需要解碼
with open('baidu.html','w',encoding='utf-8') as f:
  f.write(response.content.decode('utf-8'))

import requests
 
url = "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())      #獲取為字典的形式

import requests
 
proxy = {'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. 創(chuàng)建session對(duì)象，可以保存Cookie值
ssion = requests.session()
 
# 2. 處理 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. 需要登錄的用戶名和密碼
data = {"email":"158xxxxxxxx", "password":"pythonxxxxxxx"}
 
# 4. 發(fā)送附帶用戶名和密碼的請(qǐng)求，并獲取登錄后的Cookie值，保存在ssion里
ssion.post("http://www.renren.com/PLogin.do", data = data)
 
# 5. ssion包含用戶登錄后的Cookie值，可以直接訪問(wèn)那些登錄后才可以訪問(wèn)的頁(yè)面
response = ssion.get("http://zhibo.renren.com/news/108")
 
# 6. 打印響應(yīng)內(nèi)容
print(response.text)