Python Image Viewer With History And Random Navigation

What the source does

• FilesystemNone observedNo reads or writes in the source
• NetworkNone observedNo outbound calls in the source
• ShellNone observedNo commands run in the source
• DependenciesPinnedNothing floats
• SecretsNone foundNo keys in source

Five audit layers

Gates applied: no behavioural pass.

Audit 0.4.1 · source sha 04e912cff54b · 14 Oct 2026Report an issue or request a re-scan

• PublisherECNU-ICALK GitHub organizationOwner of the repository this skill is read from
• Source folderECNU-ICALK/AutoSkill/SkillBank/ConvSkill/english_gpt4_8_GLM4.7/python-image-viewer-with-history-and-random-navigationThe exact folder we audited
• LicenceNot declaredAs the repository states it
• Commit pinned for this verdict04e912cff54bA new audit runs when the source changes
• Repository statusNot archivedLast push 157 days ago
• Sandboxed runNot runSkills are read, not executed; layer L4 is skipped

Its description: Implements a Tkinter-based image viewer that maintains a linear history of viewed image indices. Navigation moves backward through history and forward through history, adding new random images from the remaining pool…

---
id: "2c226787-0061-43a9-9a14-aeb783364a85"
name: "Python Image Viewer with History and Random Navigation"
description: "Implements a Tkinter-based image viewer that maintains a linear history of viewed image indices. Navigation moves backward through history and forward through history, adding new random images from the remaining pool only when the end of history is reached."
version: "0.1.0"
tags:
  - "python"
  - "tkinter"
  - "image-viewer"
  - "history-navigation"
  - "random-selection"
triggers:
  - "integrate history navigation into image viewer"
  - "python tkinter image viewer with back button"
  - "random image selection with history"
  - "browse history then load new images"
  - "implement image viewer history list"
---

# Python Image Viewer with History and Random Navigation

Implements a Tkinter-based image viewer that maintains a linear history of viewed image indices. Navigation moves backward through history and forward through history, adding new random images from the remaining pool only when the end of history is reached.

## Prompt

# Role & Objective
You are a Python/Tkinter developer implementing an image viewer class with specific navigation and history management logic.

# Operational Rules & Constraints
1. **Data Structures**:
   - `self.history`: A list storing integer indices referencing `self.image_files`.
   - `self.history_index`: An integer tracking the current position in the history list.

2. **Folder Selection (`select_folder`)**:
   - Reset `self.history` to an empty list `[]`.
   - Reset `self.history_index` to `-1`.
   - Call `add_image_to_history()` to select and display the first random image.

3. **History Addition (`add_image_to_history`)**:
   - Select a random index from `self.image_files` that is **not** already present in `self.history`.
   - Append this index to `self.history`.
   - Increment `self.history_index`.

4. **Next Image Logic (`next_image`)**:
   - If `self.history_index + 1 < len(self.history)`: Increment `self.history_index` (browse forward in existing history).
   - Else: Call `add_image_to_history()` (load a new random image from the remaining pool).
   - Update the current image state based on the new `self.history_index`.
   - Call `display_image()`.

5. **Previous Image Logic (`previous_image`)**:
   - If `self.history_index > 0`: Decrement `self.history_index`.
   - Do **not** add new images to history.
   - Update the current image state based on the new `self.history_index`.
   - Call `display_image()`.

6. **Display Logic (`display_image`)**:
   - Retrieve the filename using `self.image_files[self.history[self.history_index]]`.
   - Use this filename string to construct the full path via `os.path.join(self.image_folder, filename)`.
   - Do not pass integers directly to `os.path.join`.

7. **Delayed Loading**:
   - If implementing a delayed load (e.g., showing text first), ensure the delayed method loads the **same** image identified by the current history index, not a new random one.

# Anti-Patterns
- Do not store full file paths in `self.history` if `self.image_files` is a list of names; store indices.
- Do not generate a new random image in `previous_image`.
- Do not generate a new random image in `next_image` if history is not exhausted.

## Triggers

- integrate history navigation into image viewer
- python tkinter image viewer with back button
- random image selection with history
- browse history then load new images
- implement image viewer history list

Excerpt, first 3,495 characters of SKILL.md, verbatim from the audited commit. It is text from someone else’s repository, quoted so you can judge it before your agent reads it.

git clone https://github.com/ECNU-ICALK/AutoSkill
git -C AutoSkill checkout 04e912cff54b

Works in

1. 2026-10-14
   ✓SAFE B 89 / 100

   first audit · source 04e912cff54b

Questions about Python Image Viewer With History And Random Navigation

• github.com/ECNU-ICALK/AutoSkill/tree/main/SkillBank/ConvSkill/en — the audited source at commit 04e912cff54b and every finding aboveObserved · 14 Oct 2026

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