无法在PyCharm-Mac上运行简单的webdriver[重复]

Question

我在Mac上安装了pycharm(Python3.6)+selenium(3.8)。

正在尝试运行：

from selenium import webdriver
driver=webdriver.Firefox()

我得到错误：

/Users/ronavaida/PycharmProjects/untitled/venv/bin/python /Users/ronavaida/PycharmProjects/untitled/testselenium.py
Traceback (most recent call last):
  File "/Users/ronavaida/PycharmProjects/untitled/testselenium.py", line 3, in <module>
    driver=webdriver.Firefox()
  File "/Users/ronavaida/PycharmProjects/untitled/venv/lib/python3.6/site-packages/selenium/webdriver/firefox/webdriver.py", line 158, in __init__
    keep_alive=True)
  File "/Users/ronavaida/PycharmProjects/untitled/venv/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 154, in __init__
    self.start_session(desired_capabilities, browser_profile)
  File "/Users/ronavaida/PycharmProjects/untitled/venv/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 243, in start_session
    response = self.execute(Command.NEW_SESSION, parameters)
  File "/Users/ronavaida/PycharmProjects/untitled/venv/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 311, in execute
    self.error_handler.check_response(response)
  File "/Users/ronavaida/PycharmProjects/untitled/venv/lib/python3.6/site-packages/selenium/webdriver/remote/errorhandler.py", line 237, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.SessionNotCreatedException: Message: Unable to find a matching set of capabilities

Answer 1

您看到的错误说明了一切：

SessionNotCreatedException: Message: Unable to find a matching set of capabilities

您需要从此链接下载最新的GeckoDriver二进制文件并将其保存在您的系统中，并在初始化WebDriver和Browser实例时提供GeckoDriver二进制文件的绝对路径，如下所示：

from selenium import webdriver

driver = webdriver.Firefox(executable_path=r'C:\path\to\geckodriver.exe')
driver.get('https://www.google.co.in')
driver.quit()