selenium_基本用法

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from selenium import webdriver
browser=webdriver.Firefox()
browser.get('http://mail.yahoo.com')
emailElem=browser.find_element_by_id('login-username')
emailElem.send_keys('not_my_real_email')
passwordElem=browser.find_element_by_id('login-passwd')
passwordElem.send_keys('12345')
passwordElem.submit() #把用户名和密码显示到框架上

如果没有passwordElem.submit() ,就不会显示用户名和密码
图片





 from selenium import webdriver
browser = webdriver.Firefox()
try:
    elem = browser.find_element_by_class_name('bookcover') #程序执行速度慢
    print('Found <%s> element with that class name!' % (elem.tag_name))
except:
    print('Was not able to find an element with that name.')
    
linkElem=browser.find_element_by_link_text('Read It Online')
 
linkElem.click() #执行速度很慢
 

图片


#特别注意属性值大小写敏感:Keys,Firefox,HOME,END等等
from selenium import webdriver
from selenium.webdriver.common.keys import Keys #Keys 等导入对象大小写敏感
browser=webdriver.Firefox()     #Firefox大小写敏感
browser.get('http://nostarch.com')
htmlElem=browser.find_element_by_tag_name('html')
htmlElem.send_keys(Keys.END) #scrolls to bottom
#htmlElem.send_keys(Keys.HOME)  #scrolls to top

图片




#特别注意属性值大小写敏感:Keys,Firefox,HOME,END等等
from selenium import webdriver
from selenium.webdriver.common.keys import Keys #Keys 等导入对象大小写敏感
browser=webdriver.Firefox()     #Firefox大小写敏感
browser.get('http://nostarch.com')
htmlElem=browser.find_element_by_tag_name('html')
htmlElem.send_keys(Keys.END) #scrolls to bottom
#htmlElem.send_keys(Keys.HOME)  #scrolls to top
 
linkElem=browser.find_element_by_link_text('Rootkits and Bootkits')
linkElem.click()    #点击Rootkits and Bootkits链接
browser.back()    #后退网页
browser.forward()  #前进网页
browser.refresh()  #刷新网页
browser.quit()    #退出浏览器
 
 
 
 

Table 11-3. Selenium’s WebDriver Methods for Finding Elements

Method name

WebElement object/list returned

browser.find_element_by_class_name(name)
browser.find_elements_by_class_name(name)

Elements that use the CSS class name

browser.find_element_by_css_selector(selector)
browser.find_elements_by_css_selector(selector)

Elements that match the CSS selector

browser.find_element_by_id(id)
browser.find_elements_by_id(id)

Elements with a matching id attribute value

browser.find_element_by_link_text(text)
browser.find_elements_by_link_text(text)

<a> elements that completely match the textprovided

browser.find_element_by_partial_link_text(text)
browser.find_elements_by_partial_link_text(text)

<a> elements that contain the text provided

browser.find_element_by_name(name)
browser.find_elements_by_name(name)

Elements with a matching name attribute value

browser.find_element_by_tag_name(name)
browser.find_elements_by_tag_name(name)

Elements with a matching tag name (case insensitive; an <a> element is matched by 'a'and 'A')

Table 11-4. WebElement Attributes and Methods

Attribute or method

Description

tag_name

The tag name, such as 'a' for an <a> element

get_attribute(name)

The value for the element’s name attribute

text

The text within the element, such as 'hello' in <span>hello</span>

clear()

For text field or text area elements, clears the text typed into it

is_displayed()

Returns True if the element is visible; otherwise returns False

is_enabled()

For input elements, returns True if the element is enabled; otherwise returns False

is_selected()

For checkbox or radio button elements, returns True if the element is selected; otherwise returns False

location

A dictionary with keys 'x' and 'y' for the position of the element in the page

 
 
 
 
 

Table 11-5. Commonly Used Variables in the selenium.webdriver.common.keysModule

Attributes

Meanings

Keys.DOWNKeys.UPKeys.LEFTKeys.RIGHT

The keyboard arrow keys

Keys.ENTERKeys.RETURN

The ENTER and RETURN keys

Keys.HOMEKeys.ENDKeys.PAGE_DOWN,Keys.PAGE_UP

The homeendpagedown, and pageup keys

Keys.ESCAPEKeys.BACK_SPACEKeys.DELETE

The ESC, BACKSPACE, and DELETE keys

Keys.F1Keys.F2,..., Keys.F12

The F1 to F12 keys at the top of the keyboard

Keys.TAB

The TAB key

 
原文地址:https://www.cnblogs.com/webRobot/p/5464990.html