标签:检测 google char 字符编码 python3 情况下 shell 有一个 system
[root@localhost Python-3.6.6]# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 7.4 (Maipo)
[root@localhost Python-3.6.6]# uname -a
Linux localhost.localdomain 3.10.0-693.el7.x86_64 #1 SMP Thu Jul 6 19:56:57 EDT 2017 x86_64 x86_64 x86_64 GNU/Linux
[root@localhost Python-3.6.6]# getenforce
Disabled
[root@localhost Python-3.6.6]# systemctl status firewalld.service
● firewalld.service - firewalld - dynamic firewall daemon
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
Active: inactive (dead)
Docs: man:firewalld(1)
[root@localhost Python-3.6.6]#
pip3 install requests
pip3 install selenium
yum install Xvfb
yum install libXfont
yum install xorg-x11-fonts*
vim /etc/yum.repos.d/google.repo
[google]
name=Google-x86_64
baseurl=http://dl.google.com/linux/rpm/stable/x86_64
enabled=1
gpgcheck=0
gpgkey=https://dl-ssl.google.com/linux/linux_signing_key.pub
yum install google-chrome-stable
yum install GConf2-3.2.6-8.el7.x86_64
wget http://chromedriver.storage.googleapis.com/70.0.3538.67/chromedriver_linux64.zip
unzip chromedriver_linux64.zip
mv chromedrive /usr/bin
chmod +x /usr/bin/chromedrive
chromedriver
Starting ChromeDriver (v2.9.248304) on port 9515
#验证
python3
>>> from selenium import webdriver
>>> browser = webdriver.Chrome()
#会弹出一个空白的chrome
#默认情况下root用户不能调用chrome,建议为chrome建立一个单独用户
yum install firefox
wget https://github.com/mozilla/geckodriver/releases/download/v0.23.0/geckodriver-v0.23.0-linux64.tar.gz
tar xf geckodriver-v0.23.0-linux64.tar.gz -C /usr/bin
chmod +x geckodriver
#验证
python3
>>> from selenium import webdriver
>>> browser = webdriver.Firefox()
#会弹出一个空白的Firefox
以上,我们就可以利用chrome或者firefox进行网页抓取了,但是这样会有一个问题:因为程序的运行过程中需要一直开着浏览器。所以我们可以选用×××面的浏览器PhantomJS。
wget https://bitbucket.org/ariya/phantomjs/downloads/phantomjs-2.1.1-linux-x86_64.tar.bz2
tar xf https://bitbucket.org/ariya/phantomjs/downloads/phantomjs-2.1.1-linux-x86_64.tar.bz2
cd phantomjs-2.1.1-linux-x86_64/bin
mv phantomjs /usr/bin/
chmod +x /usr/bin/phantomjs
#验证
python3
>>> from selenium import webdriver
>>> browser = webdriver.PhantomJS()
>>> browser.get(‘https://www.baidu.com‘)
>>> print (browser.current_url)
https://www.baidu.com/
>>>
#此时,不会打开浏览器,但是通过print打印了请求地址。说明可以正常使用。
aiohttp是一种类似requests的请求库,区别在于,aiohttp是一个提供异步web服务的库。
安装方式如下:
pip3 install aiohttp
pip3 install cchardet aiodns #字符编码检测库及加速DNS解析的库
标签:检测 google char 字符编码 python3 情况下 shell 有一个 system
原文地址:http://blog.51cto.com/13649299878/2318108