ارور webdriver

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اینها کدها هستند ارور میده

from selenium import webdriver

import time

import urllib









x=str(input("Enter the URL"))

refreshrate=int(input("Enter the number of seconds"))

refreshrate=int(refreshrate)

driver = webdriver.Opera()





driver.get("http://"+x)

while True:

    time.sleep(refreshrate)

    driver.refresh()

Traceback (most recent call last):

  File "C:\Users\DashAmir\AppData\Local\Programs\Python\P  ython37\lib\site-packages\selenium\webdriver\common\service.py", line 76, in start

    stdin=PIPE)

  File "C:\Users\DashAmir\AppData\Local\Programs\Python\P  ython37\lib\subprocess.py", line 756, in __init__

    restore_signals, start_new_session)

  File "C:\Users\DashAmir\AppData\Local\Programs\Python\P  ython37\lib\subprocess.py", line 1155, in _execute_child

    startupinfo)

FileNotFoundError: [WinError 2] The system cannot find the file specified





During handling of the above exception, another exception occurred:





Traceback (most recent call last):

  File "C:\Users\DashAmir\AppData\Local\Programs\Python\P  ython37\ex1.py", line 9, in <module>

    driver = webdriver.Opera()

  File "C:\Users\DashAmir\AppData\Local\Programs\Python\P  ython37\lib\site-packages\selenium\webdriver\opera\webdriver.py", line 78, in __init__

    service_log_path=service_log_path)

  File "C:\Users\DashAmir\AppData\Local\Programs\Python\P  ython37\lib\site-packages\selenium\webdriver\opera\webdriver.py", line 57, in __init__

    service_log_path=service_log_path)

  File "C:\Users\DashAmir\AppData\Local\Programs\Python\P  ython37\lib\site-packages\selenium\webdriver\chrome\webdriver.py", line 68, in __init__

    self.service.start()

  File "C:\Users\DashAmir\AppData\Local\Programs\Python\P  ython37\lib\site-packages\selenium\webdriver\common\service.py", line 83, in start

    os.path.basename(self.path), self.start_error_message)

selenium.common.exceptions.WebDriverException: Message: 'operadriver' executable needs to be in PATH. Please see https://sites.google.com/a/chromium.org/chromedriver/home