如何在一个页面中找到多个元素而不必每次都重读内容？

Question

我在用

find_element_by_css_selector

从一个网页上读取大约400个变量，而且速度非常慢。你知道吗

我分析了代码并注意到，对于每个find_元素，selenium正在访问httplib，并且非常确定它正在重新读取页面-我认为这就是运行速度非常慢的原因。你知道吗

有没有办法告诉selenium先读一遍然后再使用

 find_element_by_css_selector

只是为了分析元素？（页面内容在读取之间不会改变）

Answer 1

W3 Schools CSS Selectors

Chaining Css Selectors

Selector for all div and all p elements 'div, p'

Selenium Python Readthedocs Locating Elements By CSS Selectors

Use this when you want to locate an element by CSS selector syntax.

# find single div element with class item-container.
first_div = driver.find_element_by_css_selector('div.item-container') 

# find single img element with class item-image.
first_img = driver.find_element_by_css_selector('img.item-image') 

# find multiple div elements with class item-container.
all_item_divs = driver.find_elements_by_css_selector('div.item-container') 

# find multiple img elements with class item-container.
all_item_images = driver.find_elements_by_css_selector('img.item-image')

# find multiple div elements with class item-container,
#   and img elements with class item-container.
all_item_elements = driver.find_elements_by_css_selector('div.item-container, img.item-image')