鼠标操作、toast、用户输入、快捷键操作

## 鼠标悬停
```python
el = browser.find_element('xpath', "//a[contains(text(),'HTML / CSS')]")
        # actionchains 下面动作方法必须要再加上 perform 才能生效
ActionChains(browser).move_to_element(el).perform()

import time

from selenium import webdriver
from selenium.webdriver import ActionChains


def test_hover():
    url = 'https://www.runoob.com/html/html-tutorial.html'
    with webdriver.Chrome(executable_path='chromedriver_95.exe') as browser:
        browser.implicitly_wait(5)
        browser.get(url)

        # 鼠标悬停（哪个元素）
        el = browser.find_element('xpath', "//a[contains(text(),'HTML / CSS')]")
        # actionchains 下面动作方法必须要再加上 perform 才能生效
        ActionChains(browser).move_to_element(el).perform()

        # 双击
        # ActionChains(browser).double_click(el).perform()
        # # 右击
        # ActionChains(browser).context_click(el).perform()
        # # 拖动
        # ActionChains(browser).drag_and_drop(el, el).perform()


        time.sleep(5)

# 双击
# ActionChains(browser).double_click(el).perform()
# # 右击
# ActionChains(browser).context_click(el).perform()
# # 拖动
# ActionChains(browser).drag_and_drop(el1, el2).perform()

import time

from selenium import webdriver
from selenium.webdriver import ActionChains


def test_drapanddrop():
    url = 'https://demos.telerik.com/kendo-ui/dragdrop/index'
    with webdriver.Chrome(executable_path='chromedriver_95.exe') as browser:
        browser.implicitly_wait(5)
        browser.maximize_window()
        browser.get(url)

        el_start = browser.find_element('id', "draggable")
        # 把该元素挪动到可视范围之内
        el_start.location_once_scrolled_into_view
        el_end = browser.find_element('id', "droptarget")
        # actionchains 下面动作方法必须要再加上 perform 才能生效
        # ActionChains(browser).move_to_element(el).perform()
        # # 拖动
        ActionChains(browser).drag_and_drop(el_start, el_end).perform()


        time.sleep(5)

```

## toast
因为是通过 JS 动态加载的，过3s 消失，当出现时，使用 source 的暂停键，
debug，

注意设置等待。

## 用户输入，
- send_keys()
- 单选   
- 多选  (找到元素，直接点击)
- select  (直接找到 option 元素，点击)

import time

from selenium import webdriver
from selenium.webdriver import ActionChains


def test_check():
    url = 'file:///D:/vip%E7%8F%AD%E7%BA%A7/py44/day37_%E6%B5%8F%E8%A7%88%E5%99%A8%E6%93%8D%E4%BD%9C/radio.html'
    with webdriver.Chrome(executable_path='chromedriver_95.exe') as browser:
        browser.implicitly_wait(5)
        browser.maximize_window()
        browser.get(url)

        browser.find_element('xpath', '//input[@value="a"]').click()
        # time.sleep(5)


        # 下拉框
        # browser.find_element('name', 'mysel').click()
        browser.find_element('xpath', '//option[text()="选项3"]').click()
        time.sleep(5)

- 快捷键
```python
# 回车
browser.find_element('id', 'kw').send_keys('困困', Keys.ENTER)

import time

from selenium import webdriver
from selenium.webdriver import ActionChains, Keys


def test_kuaijiejian():
    url = 'http://www.baidu.com'
    with webdriver.Chrome(executable_path='chromedriver_95.exe') as browser:
        browser.implicitly_wait(5)
        browser.maximize_window()
        browser.get(url)

        browser.find_element('id', 'kw').send_keys('困困')
        # 回车
        # browser.find_element('id', 'kw').send_keys(Keys.ENTER)

        # 第二种情况：  Ctrl + c (+Ctrl松开)  Ctrl + v
        # 下面这个是先按control，松开后再v
        # browser.find_element('id', 'kw').send_keys(Keys.CONTROL, 'v')

        actions = ActionChains(browser)
        # 3个步骤，组合键，先按control再按a再抬起control
        actions.key_down(Keys.CONTROL).send_keys('a').key_up(Keys.CONTROL).perform()
        actions.key_down(Keys.CONTROL).send_keys('c').key_up(Keys.CONTROL).perform()
        actions.key_down(Keys.CONTROL).send_keys('v').key_up(Keys.CONTROL).perform()
        actions.key_down(Keys.CONTROL).send_keys('v').key_up(Keys.CONTROL).perform()
        actions.key_down(Keys.CONTROL).send_keys('v').key_up(Keys.CONTROL).perform()
        time.sleep(5)