使用xpath按位置查找元素

Question

My selenium driver finds about 13 li elements. However, the following does not work, giving element not found error:

driver.find_element_by_xpath('//li[0]')

But, this works correctly:

driver.find_elements_by_xpath('//li')[0]

I thought these are the same, although I would prefer the first approach to work. What is going on here?

Answer 1

Python is zero-indexed, but XPath is one-indexed :

The first position is 1.

As a result, the following are equivalent:

driver.find_elements_by_xpath('//li')[0]
driver.find_element_by_xpath('(//li)[1]')