from selenium import webdriver
from time import sleep
from selenium.webdriver.firefox.service import Service
from selenium.webdriver.common.by import By
s=Service('geckodriver.exe')
driver=webdriver.Firefox(service=s)
driver.get('https://www.baidu.com/')
driver.maximize_window()
driver.save_screenshot('baidu.png')
sleep(2)
driver.quit()

应该有保存到,这个是保存在你默认的工作空间下的,你去你那个项目目录下找找看应该能找到