How to Fix the 'Geckodriver Executable Not Found in PATH' Error in Selenium with Python?

Selenium using Python: Resolving 'Geckodriver Executable Not Found in PATH' Error

Background:

When using Selenium with Python and Firefox, you may encounter an error stating that the 'geckodriver' executable is not present in the system PATH. This executable is necessary for Selenium to control Firefox.

Cause:

The error occurs because the Selenium client bindings cannot locate the geckodriver executable. By default, the executables are expected to be in the system's PATH. If it's not there, the system cannot find it.

Solution:

To resolve this issue, you need to add the directory containing the geckodriver executable to the system PATH:

Unix/macOS:

1. Download the latest geckodriver executable from https://github.com/mozilla/geckodriver/releases.
2. Extract the executable to a directory in your system PATH.

3. Open a terminal and run the following command to add the directory to the PATH:

   export PATH=$PATH:/path/to/directory/of/executable

Windows:

1. Download the latest geckodriver executable from https://github.com/mozilla/geckodriver/releases.
2. Extract the executable to a directory of your choice.
3. Open the Control Panel and search for "System".
4. Click on "Advanced system settings" and then on the "Environment Variables" button.
5. Under "System variables", find the PATH variable and click Edit.
6. Add the full directory path containing the geckodriver executable to the end of the value field and click OK.
7. Restart your system for the changes to take effect.

Additional Considerations:

• Make sure to download the geckodriver executable corresponding to the version of Firefox you are using.

• If you have installed Firefox in a non-default location, you may also need to specify the binary location explicitly when creating the WebDriver instance:

  from selenium.webdriver.firefox.firefox_binary import FirefoxBinary
  
  binary = FirefoxBinary('path/to/installed firefox binary')
  browser = webdriver.Firefox(firefox_binary=binary)

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