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send keys模拟按键输入

场景

send_keys方法可以模拟一些组合键操作，比如ctrl+a等。另外有时候我们需要在测试时使用tab键将焦点转移到下一个元素，这时候也需要send_keys。在某些更复杂的情况下，还会出现使用send_keys来模拟上下键来操作下拉列表的情况。

代码

下面的代码演示了如何将A多行文本框中的内容清空并复制到B文本框中。

send_keys.html

	<html>
		<head>
			<meta http-equiv="content-type" content="text/html;charset=utf-8" />
			<title>send keys</title>		
			<script type="text/javascript" async="" src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
			<link href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css" rel="stylesheet" />		
		</head>
		<body>
			<h3>send keys</h3>
			<div class="row-fluid">
			<div class="span3">		
				<div class="well">
					<label>A</label>
					<textarea rows="10", cols="10" id="A">I think watir-webdriver is better than selenium-webdriver</textarea>
				</div>			
			</div>
			<div class="span3">		
				<div class="well">
					<label>B</label>
					<textarea rows="10", cols="10" id="B"></textarea>
				</div>			
			</div>
			</div>		
		</body>
		<script src="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/js/bootstrap.min.js"></script>
	</html>

send_keys.py

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from time import sleep
import os
if 'HTTP_PROXY'in os.environ: del os.environ['HTTP_PROXY']

dr = webdriver.Chrome()
file_path = 'file:///' + os.path.abspath('send_keys.html')

dr.get(file_path)

# copy content of A
dr.find_element_by_id('A').send_keys((Keys.CONTROL, 'a'))
dr.find_element_by_id('A').send_keys((Keys.CONTROL, 'x'))
sleep(1)

# paste to B
dr.find_element_by_id('B').send_keys((Keys.CONTROL, 'v'))
sleep(1)

# # send keys to A
dr.find_element_by_id('A').send_keys('watir', '-', 'webdriver', Keys.SPACE, 'is', Keys.SPACE, 'better')
sleep(2)

dr.quit()