python-2.7 – Selenium Python我从文本元素中获取一个空字符串,

我的代码片段是：

def is_engine_number_displayed(self):
    engine_no_element = self.get_element(By.XPATH,'//a[contains(.,"Engine: 5.1.1")]')
    print "engine_no_element.text***"
    print engine_no_element.text
    #return engine_no_element.text in "Engine: 5.1.1"

HTML是：

<div class="GJPPK2LBKQ">
<a class="gwt-Anchor GJPPK2LBMQ" title="Click for about">Client: 5.1.1.6044</a>
<a class="gwt-Anchor GJPPK2LBMQ" title="Click for about">Engine: 5.1.1.5218</a>

我的XPATH找到文本引擎：5.1.1

//a[contains(.,"Engine: 5.1.1")]

使用XPATH,GUI上突出显示文本Engine：5.1.1

get_element在我的Base类中.它的实施是：

# returns the element if found
def get_element(self,how,what):
    # params how: By locator type
    # params what: locator value
    try:
        element = self.driver.find_element(by=how,value=what)
    except NoSuchElementException,e:
        print what
        print "Element not found "
        print e
        screenshot_name = how + what + get_datetime_now() # create screenshot name of the name of the element + locator + todays date time.  This way the screenshot name will be unique and be able to save
        self.save_screenshot(screenshot_name)
        raise
    return element

为什么我的元素文本值为空？

谢谢,
里亚兹