Python Pickle Files: Why Loading an Unknown Model Can Run Code
An unknown Python .pkl model can execute code when loaded. Follow a tested harmless example, learn safe inspection, and compare skops, Safetensors, JSON and PyTorch weights_only.
Posts by Lucas Bennett
Python CSV KeyError: Fix a Hidden UTF-8 BOM in Headers
If Python's csv.DictReader cannot find a visible header, check for a UTF-8 BOM. Reproduce the hidden key, use utf-8-sig and validate your CSV schema safely.
API Idempotency: Retry Requests Without Creating Duplicates
A timeout can hide a successful API request. Learn how operation keys, atomic database writes and a clear retry contract prevent duplicate work, with a tested Python and SQLite example.
SSH Host Key Changed? Verify It Before Fixing known_hosts
An SSH host-key warning can mean a rebuilt server or an impostor. Learn how to verify the fingerprint and safely update one known_hosts entry.
Git detached HEAD: save a commit and recover it with reflog
Detached HEAD is normal. Learn how to keep a commit on a branch, carry uncommitted edits, and find a commit with Git's reflog.
PowerShell says scripts are disabled? Check this first
If PowerShell says running scripts is disabled, inspect the effective policy first. Learn what each scope means, why a downloaded file can be blocked, and when to ask IT.
Docker Compose networking: localhost, names and ports
Docker works in your browser but fails in a container? Use a two-service example to choose the right hostname, port and listening address.
Git Stash: Save Unfinished Work Before Switching Branches
Use Git stash to park unfinished changes, switch branches, and restore the right work without dropping it too early. See how untracked files, conflicts, commits and worktrees change the choice.
Git diff --check: Catch Whitespace Errors Before a Commit
Check staged and unstaged Git changes for whitespace errors and conflict markers, then understand what a clean result actually means.
Added a Tool to PATH? Why Your Terminal Still Can’t Find It
Added a tool to PATH but PowerShell still cannot find it? Compare saved and session settings, check command resolution, and correct the right entry.
Git Cherry-Pick for Release Backports: What to Check
Decide whether a release fix needs a direct cherry-pick, prerequisites or an adapted implementation, and investigate conflicts, equivalent patches and empty results.
How to Cherry-Pick One Git Commit onto Another Branch
Copy one ordinary Git commit onto a review branch. Inspect the patch, choose the receiving branch, apply it once and verify what arrived.
How to Undo a Shared Git Commit with git revert
Reverse an ordinary commit that others may already have pulled. Use git revert to add a corrective commit, then inspect and test it before sharing.
WSL 2 Disk Space Not Shrinking? How to Compact ext4.vhdx on Windows
Check the exact WSL 2 disk, verify a backup and stop the distribution before attempting VHDX compaction. Understand DiskPart, Optimize-VHD and sparse-mode limits.
Try a Windows-only Steam game on Linux with Proton
Steam Play can run some Windows-only games on Linux. Learn how to enable Proton, test the parts of a game that matter, and know when DRM or anti-cheat can get in the way.