python 爬虫
2021/10/14 22:15:44
本文主要是介绍python 爬虫，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！
import requests,re
import io
import sys
import time
from bs4 import BeautifulSoup
import random
requests.adapters.DEFAULT_RETRIES =5
from datetime import datetime
from scrapy.http import Request
from scrapy.selector import Selector
url4="https://www.liepin.com/zhaopin/?headId=d635640db4d8b0b807d1bcc053d4918a&pubTime=30"
file="d:\\data\\"+datetime.now().strftime('%Y%m%d%H%M%S')+".txt"
file=datetime.now().strftime('%Y%m%d%H%M%S')+".txt"
f = open(file, 'w')#新建文件，能写入；如果文件存在则覆盖
def get_html(url):
try:
header={'User-Agent':'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.90 Safari/537.36 2345Explorer/9.3.2.17331', }
user_agent = [
"Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; AcooBrowser; .NET CLR 1.1.4322; .NET CLR 2.0.50727)",
"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; Acoo Browser; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.0.04506)",
"Mozilla/4.0 (compatible; MSIE 7.0; AOL 9.5; AOLBuild 4337.35; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)",
"Mozilla/5.0 (Windows; U; MSIE 9.0; Windows NT 9.0; en-US)",
"Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET CLR 2.0.50727; Media Center PC 6.0)",
"Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET CLR 1.0.3705; .NET CLR 1.1.4322)",
"Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 5.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727; InfoPath.2; .NET CLR 3.0.04506.30)",
"Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN) AppleWebKit/523.15 (KHTML, like Gecko, Safari/419.3) Arora/0.3 (Change: 287 c9dfb30)",
"Mozilla/5.0 (X11; U; Linux; en-US) AppleWebKit/527+ (KHTML, like Gecko, Safari/419.3) Arora/0.6",
"Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.2pre) Gecko/20070215 K-Ninja/2.1.1",
"Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9) Gecko/20080705 Firefox/3.0 Kapiko/3.0",
"Mozilla/5.0 (X11; Linux i686; U;) Gecko/20070322 Kazehakase/0.4.5",
"Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.8) Gecko Fedora/1.9.0.8-1.fc10 Kazehakase/0.5.6",
"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11",
"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3) AppleWebKit/535.20 (KHTML, like Gecko) Chrome/19.0.1036.7 Safari/535.20",
"Opera/9.80 (Macintosh; Intel Mac OS X 10.6.8; U; fr) Presto/2.9.168 Version/11.52"
]
aaop=random.choice(user_agent)
header={
'User-Agent': aaop, # 浏览器头部
'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8', # 客户端能够接收的内容类型
'Accept-Language': 'en-US,en;q=0.5', # 浏览器可接受的语言
}
#'Connection': 'keep-alive', # 表示是否需要持久连接
#ht=requests.get(url,headers=header,verify=True)
print(aaop)
ht=requests.get(url,headers=header)
#ht=requests.get(url,timeout=20)
#ht=requests.get(url)
ht.raise_for_status
ht.encoding=ht.apparent_encoding
ht.encoding='utf-8'
return ht.text
except Exception as e:
f.close()
print("error!!!")
print("error:",e)
def get_htmla(url):
aui=0
while aui==0:
try:
header={'User-Agent':'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.90 Safari/537.36 2345Explorer/9.3.2.17331', }
user_agent = [
"Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; AcooBrowser; .NET CLR 1.1.4322; .NET CLR 2.0.50727)",
"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; Acoo Browser; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.0.04506)",
"Mozilla/4.0 (compatible; MSIE 7.0; AOL 9.5; AOLBuild 4337.35; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)",
"Mozilla/5.0 (Windows; U; MSIE 9.0; Windows NT 9.0; en-US)",
"Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET CLR 2.0.50727; Media Center PC 6.0)",
"Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET CLR 1.0.3705; .NET CLR 1.1.4322)",
"Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 5.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727; InfoPath.2; .NET CLR 3.0.04506.30)",
"Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN) AppleWebKit/523.15 (KHTML, like Gecko, Safari/419.3) Arora/0.3 (Change: 287 c9dfb30)",
"Mozilla/5.0 (X11; U; Linux; en-US) AppleWebKit/527+ (KHTML, like Gecko, Safari/419.3) Arora/0.6",
"Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.2pre) Gecko/20070215 K-Ninja/2.1.1",
"Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9) Gecko/20080705 Firefox/3.0 Kapiko/3.0",
"Mozilla/5.0 (X11; Linux i686; U;) Gecko/20070322 Kazehakase/0.4.5",
"Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.8) Gecko Fedora/1.9.0.8-1.fc10 Kazehakase/0.5.6",
"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11",
"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3) AppleWebKit/535.20 (KHTML, like Gecko) Chrome/19.0.1036.7 Safari/535.20",
"Opera/9.80 (Macintosh; Intel Mac OS X 10.6.8; U; fr) Presto/2.9.168 Version/11.52"
]
aaop=random.choice(user_agent)
header={
'User-Agent': aaop, # 浏览器头部
'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8', # 客户端能够接收的内容类型
'Accept-Language': 'en-US,en;q=0.5', # 浏览器可接受的语言
}
#'Connection': 'keep-alive', # 表示是否需要持久连接
#ht=requests.get(url,headers=header,verify=True)
print(aaop)
ht=requests.get(url,headers=header)
#ht=requests.get(url,timeout=20)
#ht=requests.get(url)
ht.raise_for_status
ht.encoding=ht.apparent_encoding
ht.encoding='utf-8'
aui=1
return ht.text
except Exception as e:
#f.close()
aui=0
print("error!!!")
print("error:",e)
def jiansuo(url):
rr=requests.get(url)
soup=BeautifulSoup(get_htmla(url),"html.parser")
aae=0
for aa in soup.find_all('div'):#检索出DIV
if aa.attrs['class']==["sk"]:#每个学校信息所在DIV都有这个class="sk"这一属性
for bb in aa.children:
if bb.string!=None:
aae=aae+1
print(aae)
#print(bb.string)
x=bb.string.encode('gbk','ignore').decode('gbk')
f.write(x+"\n")#每写入一行，最后加回车换行
def jiansuoa(url):
rr=requests.get(url)
soup=BeautifulSoup(get_htmla(url),"html.parser")
aae=0
bz=0
for aa in soup.find_all('div'):#检索出DIV
for bb in aa.children:
try:
if(bb.attrs["class"][0]=='job-detail-box'):
for cc in bb.children:
print(cc)
except:
continue
def jiansuoaa(url):
rr=requests.get(url)
soup=BeautifulSoup(get_htmla(url),"html.parser")
aae=0
aaf=0
bz=0
for aa in soup.find_all('a'):#检索出DIV
try:
if(aa.attrs["data-nick"]=='job-detail-job-info'):
for bb in aa.find_all('div'):
try:
if bb.string!=None:
aae=aae+1
print(bb.string,aae)
#print(bb.attrs["title"],aae,type(bb.attrs))
except:
continue
except:
continue
r=requests.get(url4)
r.encoding='utf-8'
body=r.text
tx=Selector(text=body).xpath('/html/body/div[1]/div/section[1]/div/ul').extract()
tx1=re.findall('div class="job-detail-box"',str(tx))
aae=0
for aa in tx1:
aae=aae+1
print(aa,aae)
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