在selenium中，当页面包含多个相同结构的按钮时，如何根据条件单击所需的按钮

from selenium import webdriver

driver = webdriver.Chrome()
driver.get("https://example.com")

# 使用XPath定位并点击按钮
button = driver.find_element_by_xpath("//button[@class='btn-primary' and contains(text(), 'Submit')]")
button.click()

from selenium import webdriver

driver = webdriver.Chrome()
driver.get("https://example.com")

# 使用CSS选择器定位并点击按钮
button = driver.find_element_by_css_selector("button.btn-primary")
button.click()

from selenium import webdriver

driver = webdriver.Chrome()
driver.get("https://example.com")

# 使用索引定位并点击按钮
buttons = driver.find_elements_by_tag_name("button")
button = buttons[2]  # 假设需要点击第三个按钮
button.click()