“'WebElement' object is not iterable”

# -*- coding: UTF-8 -*-
from selenium import webdriver

def main():
url = 'http://example.webscraping.com/places/default/search'
driver = webdriver.Chrome()
driver.get(url)
driver.find_element_by_id('search_term').send_keys('.')
js = "document.getElementById('page_size').options[1].text='260'"
driver.execute_script(js)
driver.find_element_by_id('search').click()
driver.implicitly_wait(30)                      # 设置超时
links = driver.find_element_by_css_selector('#results a')
countries = [link.text for link in links]       # 报错
print countries
driver.close()

if __name__ == '__main__':
main()

'WebElement' object is not iterable

links = driver.find_element_by_css_selector('#results a')
改为：
links = driver.find_elements_by_css_selector('#results a')