官方Guide-python版本

在此输入代码selenium的安装
在python环境安装的基础上安装setuptools 后安装pip，并使用命令 ‘pip install selenium’安装selenium（不同语言参照官网文档）

selenium除了使用firefox driver可以使用chrome drvier、IE driver、Opera driver、android driver和ios driver（只用过chrome和Ie，其他没实践过）
以下是官方给出的一个例子：

from selenium import webdriver
from selenium.common.exceptions import TimeoutException
from selenium.webdriver.support.ui import WebDriverWait # available since 2.4.0
from selenium.webdriver.support import expected_conditions as EC # available since 2.26.0

# Create a new instance of the Firefox driver   
driver = webdriver.Firefox()    

# go to the google home page    
driver.get("http://www.google.com")


# the page is ajaxy so the title is originally this:
print driver.title
# find the element that's name attribute is q (the google search box)
inputElement = driver.find_element_by_name("q")
# type in the search
inputElement.send_keys("cheese!")
# submit the form (although google automatically searches now without submitting)
inputElement.submit()

try:

# we have to wait for the page to refresh, the last thing that seems to be updated is the title
WebDriverWait(driver, 10).until(EC.title_contains("cheese!"))
# You should see "cheese! - Google Search"
print driver.title

finally:

driver.quit()