Batch of UX tweaks the user asked for in quick succession: - Sidebar brand block (mockup §brand) — 28px ink chip with a "D" wordmark plus the "DataTools" text — injected into ``stSidebarHeader`` by a small JS bundled into the iframe-mounted script that already runs from ``hide_streamlit_chrome``. The Streamlit ``stLogoSpacer`` is hidden when the brand block is present so it sits flush at the top of the sidebar. - Findings cards are now collapsible. Each file's card head carries ``data-dt-collapsed="true"`` on first render; clicking the head flips the attribute via the new ``_WIRE_COLLAPSIBLE_FINDINGS_JS`` (MutationObserver re-wires after reruns). A CSS rule ``[stElementContainer]:has(.dt-finding-group-head[data-dt-collapsed ="true"]) ~ *`` hides every later sibling of the head's element container — covers both ``stLayoutWrapper`` (the columns rows in this Streamlit release) and ``stElementContainer`` so the rule survives future Streamlit layout renames. A chevron icon (``chevron_right``) rotates 90° when expanded. The head itself gets ``cursor: pointer`` + an accent-fill hover. - Tool-link buttons in finding rows dropped the leading ``Open`` — now read ``Clean Text →``, ``Standardize Formats →`` etc. - Finding-row column order: action is now LEFT of the description, matching user feedback (``[icon] [Tool →] [description + meta]``). - Head padding bumped to ``16px 22px`` so the filename has visible breathing room from the card's left edge (previously the mono filename felt like it was bleeding into the rounded corner). - Head margin-bottom bumped to 1.5rem for breathing room before the first finding row when expanded; collapsed state tucks the head flush against the card bottom with full ``--r-lg`` corner radius and no visible bottom border. - Files card row layout: ``✕`` button moved to the LEFT of the filename (``[✕] [chip + filename] [size]``). - Sidebar nav rows tightened: link padding 7px → 4px, line-height 1.25, 1px margin-bottom per li, section-header padding-top reduced. Plus a new ``--gap: 0.25rem`` rule for vertical blocks inside bordered containers so the Files card and findings card body have denser inter-row spacing. - Sidebar Language selector restyled: widget labels render as the spec's "Eyebrow" row (11.5px / 500 / 0.08em uppercase, tertiary ink), selectbox combobox gets a paper surface + soft border that matches the rest of the sidebar chrome. 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.