selenium.common.exceptions.SessionNotCreatedException: Message: session not created: This version of ChromeDriver only supports Chrome version 80 - selenium

Question

when i go to command prompt and type chromedriver -v:
ChromeDriver 79.0.3945.36 (3582db32b33893869b8c1339e8f4d9ed1816f143-refs/branch-heads/3945#{#614})
but when i try to run this code :
from selenium import webdriver
class InstaBot:
def __init__(self):
self.driver=webdriver.Chrome()
self.driver.get("www.instagram.com")
InstaBot()
it gives me error like this:
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.SessionNotCreatedException: Message: session not created: This version of ChromeDriver only supports Chrome version 80
why this is happening i tried to remove selenium as well as chromedriver
and reinstall of version 79.0.3945 but when i run it ,it show this can only be run on version 80
my chrome version is 79.0.3945 which is lastest ,and version 80 chrome is chrome beta

Answer 1

This error message...
selenium.common.exceptions.SessionNotCreatedException: Message: session not created: This version of ChromeDriver only supports Chrome version 80
...implies that the ChromeDriver v80.0 was unable to initiate/spawn a new Browsing Context i.e. Chrome Browser session.
Your main issue is the incompatibility between the version of the binaries you are using as follows:
You mentioned about using chromedriver=79.0.3945.36 and the release notes of chromedriver=79.0 clearly mentions the following :
Supports Chrome v79
Presumably you are using chrome v79.0 browser.
So, it's quite evident your have chromedriver=80.0 present within your system which is also within the system PATH variable and is invoked while you:
self.driver=webdriver.Chrome()
Solution
There are two solutions:
Either you upgrade chrome to Chrome Version 80.0 level. (as per ChromeDriver v80.0 release notes)
Or you can override the default chromedriver v80.0 binary location with chromedriver v79.0 binary location as follows:
from selenium import webdriver
driver = webdriver.Chrome(executable_path=r'C:\path\to\chromedriver.exe')
driver.get('http://google.com/')
You can find a detailed discussion in Ubuntu: selenium.common.exceptions: session not created: This version of ChromeDriver only supports Chrome version 79
Additional Considerations
Ensure to:
Clean your Project Workspace through your IDE and Rebuild your project with required dependencies only.
If your base Web Client version is too old, then uninstall it and install a recent GA and released version of Web Client.
Take a System Reboot.
Execute your #Test as non-root user.
Always invoke driver.quit() within tearDown(){} method to close & destroy the WebDriver and Web Client instances gracefully.
Reference
You can find a relevant detailed discussion in:
How to work with a specific version of ChromeDriver while Chrome Browser gets updated automatically through Python selenium

Answer 2

Use Bonigarcia plugin in project. After that it will manage all driver by itself.It reads chrome version and instantiate driver accordingly.
for help follow my post :
https://www.linkedin.com/pulse/webdrivermanager-bonigarcia-rohan-ravi-yadav/
or original git link/post
https://github.com/bonigarcia/webdrivermanager
If any help required , Let me know