如何計算Selenium Python中元素的屬性數量？

Question

具有以下HTML代碼：

<span class="warning" id ="warning">WARNING:</span> 

對於與XPath訪問的對象：

.//*[@id='unlink']/table/tbody/tr[1]/td/span 

怎麼能指望它的屬性（類，ID）由硒的webdriver +的Python 2.7的方式，卻不知道他們的名字？

我在等待類似count = 2的東西。

Answer 1

Got it！這應該適用於div，span，img，p和許多其他基本元素。

element = driver.find_element_by_xpath(xpath) #Locate the element. 

outerHTML = element.get_attribute("outerHTML") #Get its HTML 
innerHTML = element.get_attribute("innerHTML") #See where its inner content starts 

if len(innerHTML) > 0: # Let's make this work for input as well 
    innerHTML = innerHTML.strip() # Strip whitespace around inner content 
    toTrim = outerHTML.index(innerHTML) # Get the index of the first part, before the inner content 
    # In case of moste elements, this is what we care about 
    rightString = outerHTML[:toTrim] 
else: 
    # We seem to have something like <input class="bla" name="blabla"> which is good 
    rightString = outerHTML 
# Ie: <span class="something" id="somethingelse"> 

strippedString = rightString.strip() # Remove whitespace, if any 
rightTrimmedString = strippedString.rstrip('<>') # 
leftTrimmedString = rightTrimmedString.lstrip('</>') # Remove the <, >, /, chars. 
rawAttributeArray = leftTrimmedString.split(' ') # Create an array of: 
# [span, id = "something", class="somethingelse"] 

curatedAttributeArray = [] # This is where we put the good values 
iterations = len(rawAttributeArray) 

for x in range(iterations): 
    if "=" in rawAttributeArray[x]: #We want the attribute="..." pairs 
     curatedAttributeArray.append(rawAttributeArray[x]) # and add them to a list 

numberOfAttributes = len(curatedAttributeArray) #Let's see what we got 
print numberOfAttributes # There we go 

我希望這會有所幫助。

感謝， R.

附：這可以進一步增強，例如與<，>或/一起剝離空白。

Answer 2

這並不容易。

每個元素都有一系列隱式屬性以及明確定義的屬性（例如選中，禁用等）。因此，我能想到的唯一辦法做到這一點會得到父的引用，然後使用JavaScript執行得到的innerHTML：

document.getElementById('{ID of element}').innerHTML 

那麼你將不得不解析什麼是innerHTML的返回提取出單個元素，然後一旦你隔離了你感興趣的元素，你將再次解析該元素以提取出屬性列表。