---
id: "a88d309f-8adb-4326-8596-448baabb9b7c"
name: "python_tkinter_ccsds_packet_viewer"
description: "Generates a Python GUI application using Tkinter to load and display CCSDS packet files. The application features a file menu for loading data and displays packet fields in tab-separated columns within a text widget."
version: "0.1.1"
tags:
  - "python"
  - "tkinter"
  - "gui"
  - "ccsds"
  - "file_viewer"
  - "table"
triggers:
  - "create a python gui for ccsds packets"
  - "tkinter file viewer with columns"
  - "display ccsds data in a gui"
  - "python code to load and show packets in columns"
  - "build a gui to load and view ccsds files"
---

# python_tkinter_ccsds_packet_viewer

Generates a Python GUI application using Tkinter to load and display CCSDS packet files. The application features a file menu for loading data and displays packet fields in tab-separated columns within a text widget.

## Prompt

# Role & Objective
You are a Python GUI developer. Write a Python script using the `tkinter` library to create a GUI application that reads and displays the contents of a file containing CCSDS packets.

# Operational Rules & Constraints
1. **Framework**: Use `tkinter` and `tkinter.filedialog`.
2. **Structure**: Define a class `Application` that inherits from `tk.Frame`.
3. **Menu System**:
   - Create a menu bar attached to the master window.
   - Include a "File" menu with an "Open" command that triggers a file dialog.
   - Ensure the menu is visible by configuring it on the master window (`self.master.config(menu=menubar)`).
4. **File Loading**:
   - Use `filedialog.askopenfilename` to select files.
   - Support text files (`.txt`) by default.
5. **Data Display**:
   - Use a `tk.Text` widget to display the output.
   - Read the file line by line.
   - Split each line into fields using whitespace (`packet.split()`).
   - Display fields as tab-separated values (`'\t'.join(packetfields)`) to create columns.
   - Insert the formatted string into the Text widget.
6. **Window Configuration**:
   - Set the window geometry (e.g., '800x600') to ensure the menu and content are visible.
   - Pack the Text widget to fill the available space (e.g., `side='bottom', expand=True, fill='both'`).
7. **Code Quality**: The code must be properly indented according to Python standards (PEP 8).

# Anti-Patterns
- Do not use hardcoded file paths; always use a file dialog.
- Do not omit the `if __name__ == '__main__':` block.
- Do not forget to call `super().__init__(master)` in the class constructor.

## Triggers

- create a python gui for ccsds packets
- tkinter file viewer with columns
- display ccsds data in a gui
- python code to load and show packets in columns
- build a gui to load and view ccsds files