京东模拟点击

# !/usr/bin/env python
# -*- coding:utf-8 -*-

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.common.exceptions import TimeoutException
from selenium.webdriver.support import expected_conditions as EC


# 定义浏览器
browser = webdriver.Chrome()
# 本来是下面的因为后面很多地方会用到所以提在前面来
wait =  WebDriverWait(browser, 10)

def search():
    try:
       browser.get("https://www.jd.com")
       input= wait.until( EC.presence_of_element_located((By.CSS_SELECTOR, "#key")) )
       submit = wait.until(EC.presence_of_element_located((By.CSS_SELECTOR,"#search > div > div.form > button")))
       input.clear()
       input.send_keys('美食')
       submit.click()
       # 获取总页数
       total =wait.until(EC.presence_of_element_located((By.CSS_SELECTOR,"#J_bottomPage > span.p-skip > em:nth-child(1) > b")))
       return total.text
    # 引入这个错误判断时间是因为超出时间默认抛出TimeoutExcrption
    except TimeoutException:
        # 如果出现错误重新请求一次
       return search()


def main():
    total = search()
    print(total)

if __name__ == '__main__':
    main()