Procedure to Run the Script on Any Machine

1. Install Python

1. Download Python:

   • Visit the official Python website: https://www.python.org/downloads/.
   • Download the version compatible with your operating system (Windows, macOS, or Linux).

2. Install Python:

   • Run the downloaded installer.
   • Check the box that says "Add Python to PATH" during installation. This will make it easier to use Python from the terminal.
   • Follow the installation steps until complete.

2. Install Required Library (openpyxl)

1. Open a Terminal:

   • On Windows: Press Win + R, type cmd, and press Enter.
   • On macOS/Linux: Open the "Terminal" application.

2. Install the openpyxl Library:

   • Type the following command in the terminal and press Enter:

     pip install openpyxl

   • If you have multiple versions of Python installed, use pip3 instead of pip:

     pip3 install openpyxl

3. Prepare the Excel File

1. Create the Excel File:

   • Create an Excel file named email.xlsx.
   • Make sure that the email addresses to be verified are placed in column A, starting from cell A1.

2. Save the File:

   • Save this file in the same directory where you will place the Python script for easy access.

4. Download and Prepare the Python Script

1. Create the Python Script:

   • Copy the provided Python code into a new text editor (such as Notepad++, Visual Studio Code, or even Notepad).
   • Save the file with a .py extension, e.g., emailchecker.py.

2. Check the Directory:

   • Place email.xlsx and emailchecker.py in the same directory (e.g., on the Desktop or in a dedicated folder).

5. Run the Script

1. Open Terminal:

   • Navigate to the directory where the script and the Excel file are located.
   • For example, if the files are on the Desktop:

     cd Desktop

2. Run the Script:

   • Type the following command in the terminal:

     python emailchecker.py

   • If you have multiple versions of Python installed, use python3 instead of python:

     python3 emailchecker.py

6. Check the Results

1. Result File:
   • After execution, a file named result_verification.xlsx (or result_verification_1.xlsx, etc. if there are multiple versions) will be created in the same directory.
   • Open this file to see the results, which will be in column B with "Valid" or "Invalid" for each email address.

7. Error Handling

• If an error occurs while executing the script, a file named error_log.txt will be generated with a description of the error.
• Make sure to check this file to understand what went wrong.

Summary of Key Commands

• Install Python: https://www.python.org/downloads/
• Install openpyxl:

  pip install openpyxl