selenium:css 定位与网页翻页功能

作业：

打开百度，搜索selenium，找到第一页到第十页搜索结果标题不包含selenium的标题，统计数量，并打印标题出来

在实现过程中出现的难点：翻页过程中元素过期，无法定位到翻页元素

解决方案一：

http://blog.sina.com.cn/s/blog_65bc768e0102ve78.html
解决方案二：刷新页面重新获取元素，思路来源：https://blog.csdn.net/freesigefei/article/details/50501961

实现代码：

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# @Time    : 2018/5/7 22:19
# @Author  : fguo1029
# @File    : findkw.py
from selenium import webdriver
import time

#定位搜索结果的标题
def find_one_page(list_one_page=[], kw=''):
    driver.find_element_by_css_selector('.s_ipt').send_keys(kw)
    driver.find_element_by_css_selector('#su').click()
    time.sleep(2)
    # string_all = driver.find_elements_by_css_selector("div[srcid='1599']")
    string_all = driver.find_elements_by_css_selector("h3>a[target='_blank'] ")
    i = 0
    j = 0
    for string_one in string_all:
        baidu_href = string_one.get_attribute('href')
        kw_string = string_one.get_attribute('text')
        kw_string1 = kw_string.lower()
        if 'baidu' in baidu_href:
            if kw in kw_string1:
                i += 1
            # print(kw_string, i)
            else:
                j += 1
                if kw_string.strip() == '':
                    pass
                else:
                    list_one_page.append(kw_string)
    return list_one_page

#翻页功能
def find_kw_not_in_page(kw='', page=0):
    flag = 0
    list_all_page = []
    while flag < page:
        find_one_page(list_all_page, kw)
        flag += 1
        print(' looking for %s in page %d ' % (kw, flag))
        driver.refresh()
        driver.implicitly_wait(2)
        driver.find_element_by_css_selector("div#page> :last-child").click()
        driver.implicitly_wait(2)
    return list_all_page


if __name__ == '__main__':
    driver = webdriver.Chrome('G:Pythonpython3chromedriver.exe')
    driver.get('http://www.baidu.com')
    driver.implicitly_wait(2)

    titles = find_kw_not_in_page('selenium', 10)

    for i in titles:
        print(i)
    print('total titles numbers is %d' % len(titles))

    time.sleep(2)
    print('try to close chrome')
    driver.quit()