如何使用python调用不同浏览器

import unittest,os,time
from selenium import webdriver
from selenium.common.exceptions import NoSuchElementException

dictInput = {}

class Test(unittest.TestCase):
def setUp(self):
self.chromedriver = "C:\Users\xxx\AppData\Local\Google\Chrome\Application\chromedriver.exe" # 将chromedriver.exe拷贝到你想要调用的chrome安装路径下即可
os.environ["webdriver.chrome.driver"] = self.chromedriver
self.browser = webdriver.Chrome(self.chromedriver)
def test(self):
self.browser.get('xxxx')#此处xxxx为网页的url
if __name__ == '__main__':
import sys;sys.argv = ['',
'Test.test'
]
unittest.main()