# 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.

- Skill: `ecnu-icalk/python-tkinter-ccsds-packet-viewer` (Agent Skill)
- Install (CLI): `npx skillmds@latest add ecnu-icalk/python-tkinter-ccsds-packet-viewer`
- Raw SKILL.md: https://api.skillmd.com/api/skills/ecnu-icalk/python-tkinter-ccsds-packet-viewer/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: ECNU-ICALK (https://skillmd.com/u/ecnu-icalk)
- Updated: 2026-09-08
- Page: https://skillmd.com/skills/ecnu-icalk/python-tkinter-ccsds-packet-viewer

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# 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