我如何根据条件选择Selenium中的前一个元素？

from selenium import webdriver

driver = webdriver.Chrome()

# 定位到当前元素
current_element = driver.find_element_by_xpath("xpath_of_current_element")

# 定位到前一个元素
previous_element = driver.find_element_by_xpath("xpath_of_current_element/preceding-sibling::tag_name")

from selenium import webdriver

driver = webdriver.Chrome()

# 定位到当前元素
current_element = driver.find_element_by_css_selector("css_selector_of_current_element")

# 定位到前一个元素
previous_element = driver.find_element_by_css_selector("css_selector_of_current_element~tag_name")