Phase 1 of the audit-log re-enablement plan. Adds three opt-in env vars that let us ship one instrumented build for the user to run, without flipping the kill switch on for everybody. **Default behaviour is byte-identical to today**: with no env vars set the kill switch wins, no writer thread starts, no file is written, no stderr line is printed. Env vars (do NOT set in prod): - ``DATATOOLS_AUDIT_ENABLED=1`` — bypass ``_DISABLED`` for one session. ``_DISABLED = True`` stays in the source so an upgrade with no env var is still safe. - ``DATATOOLS_AUDIT_TRACE=1`` — print ``[audit] ...`` lines to stderr at module import, every writer-thread state change, and every producer entry point. Lets the user share a small log instead of attaching a debugger. - ``DATATOOLS_AUDIT_PROBE=<value>`` — bisect the producer path for Phase 2. Values: ``full`` (default), ``noop``, ``no-events``, ``no-page-open``, ``no-session-start``. The named variants return early from the corresponding ``log_*`` function so we can isolate which call is implicated in the blank-pages symptom. Also: - ``_writer_loop`` gets an outer ``try/except BaseException`` so silent thread death now surfaces a ``"writer thread died: ..."`` line in the launcher terminal instead of looking like a hang. - Existing first-write-failure stderr print gets ``flush=True`` so the user actually sees it before the process is killed. - Test fixture switches from the previous-commit ``_DISABLED = False`` override to ``_ENABLE_OVERRIDE = True`` so tests exercise the same bypass path the diagnostic build uses. - Two new tests pin the safety contract: with the kill switch on and no override, every producer is a true no-op (no writer thread, no file). And ``DATATOOLS_AUDIT_PROBE=no-events`` bypasses ``log_event`` even when the override is on — guards the bisect. Rollback: ``git revert HEAD`` removes Phase 1 cleanly. The deadlock fix from the previous commit stays in place. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
🌐 Language: English · Español
DataTools
Local CSV / Excel cleaning. CLI + browser GUI, no cloud, no install ceremony. GUI ships with English and Spanish language packs.
Tools
| # | Tool | Status |
|---|---|---|
| 01 | Find Duplicates — exact + fuzzy match, 5 normalizers, survivor rules, audit | Ready |
| 02 | Clean Text — whitespace, smart chars, BOM, line endings, case ops | Ready |
| 03 | Standardize Formats — dates, phones, emails, addresses, names, currencies, booleans | Ready |
| 04 | Fix Missing Values — disguised-null detection, profile, mean/median/mode/ffill/bfill/interpolate, drop strategies | Ready |
| 05 | Map Columns — fuzzy auto-rename, target schema with type coercion, required fields with defaults, drop/reorder | Ready |
| 06 | Find Unusual Values | Coming Soon |
| 07 | Combine Files | Coming Soon |
| 08 | Quality Check | Coming Soon |
| 09 | Automated Workflows — chain tools with recommended (not forced) order, save/load JSON, automate weekly cleanups | Ready |
Download (non-technical users)
Pre-built installers — no Python required:
| Platform | Download | First-launch note |
|---|---|---|
| macOS | DataTools-X.Y.Z-mac.dmg |
Drag DataTools.app into /Applications, then double-click. |
| Windows | DataTools-X.Y.Z-win-setup.exe |
Run the installer; launches from Start Menu. |
| Linux | DataTools-X.Y.Z-linux-x86_64.AppImage |
chmod +x the file, then double-click. |
Latest release: see GitHub Releases (or the Gumroad listing). The installers are ~150–200 MB; the launcher boots a local server at http://127.0.0.1:8501 and opens your browser. Nothing is sent to the cloud.
Install from source (developers)
pip install -r requirements.txt
Python 3.10+ required.
Run
GUI (recommended):
streamlit run src/gui/app.py
CLI — seven entry points:
python -m src.cli customers.csv [--apply] # dedup
python -m src.cli_text_clean messy.csv [--apply] # text clean
python -m src.cli_format intl.csv [--apply] # format standardize (auto-streams >100 MB)
python -m src.cli_missing holes.csv [--apply] # missing values
python -m src.cli_column_map vendor.csv [--apply] # column mapper
python -m src.cli_pipeline any_file.csv [--apply] # chain tools end-to-end
python -m src.cli_analyze any_file.csv [--json] # scan only
Every CLI runs preview-only by default; add --apply to write output.
Language
The GUI sidebar has a language picker. Packs ship for English and Español (src/i18n/packs/); the choice persists for the session. Adding a language: drop a <code>.json next to en.json mirroring its key tree, then list it in LANGUAGES. See Developer Guide §i18n.
Review & Normalize gate
Every uploaded file passes through a CSV-normalization gate before any tool sees it. The analyzer flags ~15 issue types (whitespace, NBSP / zero-width chars, BOM, encoding, smart punct, dirty headers, null sentinels, mojibake, …) tagged by confidence (high / medium / low) and fix action. The GUI shows each finding with Auto-fix / Skip / Customize, a live before/after preview, and an encoding-override picker. Tool pages refuse to load until the gate passes.
Output
Every run writes:
{input}_<tool>.csv— the cleaned data{input}_changes.csv(text cleaner) or{input}_match_groups.csv(dedup) — audit traillogs/<tool>_YYYYMMDD_HHMMSS.log— debug-level run log
Original input file is never modified.
Docs
- User Guide — install, GUI workflow, gate
- CLI Reference — every flag with recipes
- Requirements — file sizes, encodings, detectors, perf targets
- Technical — architecture, gate internals, fix registry
- Developer Guide — adding fixes / detectors / standardizers
Dependencies
pandas, openpyxl, rapidfuzz, phonenumbers, typer, loguru, charset-normalizer, streamlit. Optional: ftfy for mojibake repair.
License
Proprietary.