# 导包
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from time import sleep

# 创建封装类
class Login:
    
    # 创建属性参数
    def __init__(self):
        self.driver = webdriver.Chrome()
        self.url = "https://www.csdn.net/"
        self.driver.get("https://www.csdn.net/")
        self.login_button_xpath = "//a[@class='toolbar-btn-loginfun']"
        self.iframe_window_xpath = "//iframe[contains(@name,'passport_iframe')]"
        self.login_to_password_xpath = "//*[text()='密码登录']"
        self.username_input_xpath = "//input[@class='base-input-text'and @autocomplete='username']"
        self.password_input_xpath = "//input[@class='base-input-text'and @autocomplete='current-password']"
        self.agree_checkbox_xpath = "//i[@class='icon icon-nocheck']"
        self.login_submit_button_xpath = "//button[@class='base-button']"
        self.wait = WebDriverWait(self.driver, 10)
    
    # 封装执行步骤
    def login_action(self, login_num, login_password):
        try:
            self.driver.get(self.url)
            self.driver.maximize_window()
            self.driver.find_element(By.XPATH, self.login_button_xpath).click()
            # 处理iframe窗口
            self.wait.until(EC.frame_to_be_available_and_switch_to_it((By.XPATH, self.iframe_window_xpath)))
            self.driver.find_element_by_xpath(self.login_to_password_xpath).click()
            self.driver.find_element(By.XPATH, self.username_input_xpath).send_keys(login_num)
            self.driver.find_element(By.XPATH, self.password_input_xpath).send_keys(login_password)
            self.driver.find_element(By.XPATH, self.agree_checkbox_xpath).click()
            self.driver.find_element(By.XPATH, self.login_submit_button_xpath).click()

            sleep(3)

        finally:
            # 关闭浏览器
            self.driver.quit()

# 实例化调用
login_instance = Login()
login_num = "your_num"
login_password = "your_password"
login_instance.login_action(login_num, login_password)