This is My First Python Program

In this Python program provides a simple GUI tool for batch renaming files. It allows users to browse files, specify a rename format, and choose a new extension for the files. The tool then renames the selected files according to the specified format and extension.

• Specify a custom rename format.
• Choose a new extension for the files.
• Handles duplicate file names by appending an index.

• Python 3.x
• Tkinter library (usually comes pre-installed with Python)

1. Run the program by executing the main() function.
2. Click the "Browse File" button to select file.
3. Enter a custom rename format in the provided Entry widget.
4. Optionally, specify a new extension for the files.
5. Click the "Done" button to rename the selected files.
6. View success or error messages in pop-up dialogs.

• Browse File Button: Opens a file dialog to select multiple files.
• Rename Format Entry: Enter a custom rename format for the files.
• New Extension Entry: Optionally, specify a new extension for the files.
• Done Button: Initiates the file renaming process.
• Listbox: Displays the selected files for renaming.