How Do I Fix the 'No Module Named 'Selenium'' Error in Python?

"No Module Named 'Selenium'" in Python: A Troubleshooting Guide

When encountering the "No module named 'selenium'" error while using Python 3.6, it indicates that the selenium package is not installed in your Python environment. Follow these steps to resolve the issue:

1. Confirm Python Installation:

   • Open a command prompt and type "python" to verify that Python is installed.

2. Check pip Functionality:

   • Enter "pip" in the command prompt to ensure pip (Package Installer for Python) is working properly.

3. Install Selenium:

   • Install the latest version of selenium using pip: "pip install -U selenium".

4. Validate Selenium Installation:

   • Check if selenium is installed by typing "pip freeze". It should list "selenium==version" in the output.

5. Configure Selenium Execution:

   • Ensure you have the appropriate WebDriver (e.g., GeckoDriver for Firefox) installed and configured in your code.

6. Example Program:

   • Create a simple Python program using Selenium:

     from selenium import webdriver
     
     driver = webdriver.Firefox(executable_path="path/to/geckodriver.exe")
     driver.get('https://stackoverflow.com')

7. Run the Program:

   • Execute the program, which should open a Firefox browser and navigate to Stack Overflow.

8. Download Python:

   • If Python is not installed, download it from the official website: "https://www.python.org/downloads/".

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