import time
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.wait import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
driver=webdriver.Firefox()
url='https://www.baidu.com/'
driver.get(url)
time.sleep(4)
print(driver.current_url)#打印当前页面URL，正确
print(driver.title)
driver.implicitly_wait(5)
driver.find_element(By.ID,'kw').send_keys("先导入By模块")
driver.find_element(By.ID,'su').click()
time.sleep(4)
print(driver.current_url)#打印当前页面URL 正确
print(driver.title)
# driver.implicitly_wait(5)
driver.find_element(By.LINK_TEXT,"登录").click()
time.sleep(4)
print(driver.current_url)#打印当前页面URL 正确
print(driver.title)
driver.back()
# 10是最长等待时间，0.5是每0.5秒去查询对应的元素，util后面跟的是等待具体条件，EC跟的是判断条件判断元素是否在DOM上
WebDriverWait(driver, 10, 0.5,"超时").until(EC.presence_of_element_located((By.LINK_TEXT, "hao123")),message="")
driver.find_element(By.LINK_TEXT, "hao123").click()
time.sleep(4)
print(driver.current_url)#打印当前页面URL 错误：输出https://www.baidu.com/而不是hao123的链接
print(driver.title)
driver.forward()
time.sleep(4)
print(driver.current_url)#打印当前页面URL 错误：输出的是查询链接
print(driver.title)
driver.close()#关闭当前页面 错误：关闭了查询链接
time.sleep(4)
driver.quit()
你虽然打开了hao123，但窗口还是操作的第一个，需要切换到新窗口，这样就可以了
import time
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.wait import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
driver = webdriver.Firefox()
url = 'https://www.baidu.com/'
driver.get(url)
time.sleep(4)
print(driver.current_url) # 打印当前页面URL
print(driver.title)
WebDriverWait(driver, 10, 0.5, "超时").until(EC.presence_of_element_located((By.LINK_TEXT, "hao123")), message="")
driver.find_element(By.LINK_TEXT, "hao123").click()
time.sleep(4)
windows = driver.window_handles
driver.switch_to.window(windows[-1])
print(driver.current_url) # 打印当前页面URL
print(driver.title)
time.sleep(4)
driver.quit()