错误

使用selenium时报错：

Traceback (most recent call last):
  File "E:/预PyCharm项目/教程/第二章/demo1/demo1-1.py", line 8, in <module>
    driver = webdriver.Chrome()
  File "E:\预PyCharm项目\教程\Demo\venv\lib\site-packages\selenium\webdriver\chrome\webdriver.py", line 81, in __init__
    desired_capabilities=desired_capabilities)
  File "E:\预PyCharm项目\教程\Demo\venv\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 157, in __init__
    self.start_session(capabilities, browser_profile)
  File "E:\预PyCharm项目\教程\Demo\venv\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 252, in start_session
    response = self.execute(Command.NEW_SESSION, parameters)
  File "E:\预PyCharm项目\教程\Demo\venv\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 321, in execute
    self.error_handler.check_response(response)
  File "E:\预PyCharm项目\教程\Demo\venv\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: unknown error: cannot find Chrome binary

错误代码

from selenium import webdriver

driver = webdriver.Chrome()
driver.get("http://www.baidu.com")

print(driver.title)
driver.quit()

原因

可能是没有找到chrome浏览器

解决

手动设置关于本地浏览器的路径参数

正确代码

from selenium import webdriver

options = webdriver.ChromeOptions()
options.binary_location = r"F:\谷歌浏览器\安装文件\Chrome-78.0.3904.108\Google\Chrome\Application\chrome.exe"

driver = webdriver.Chrome(options=options)
driver.get("http://www.baidu.com")

print(driver.title)
driver.quit()

其中路径是你自己电脑本地的谷歌浏览器的路径。

如果运行成功，则打印：

百度一下，你就知道