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refactor: rename Tier4 to T4Devkit#275

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ktro2828 wants to merge 2 commits into
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refactor/class/t4devkit
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refactor: rename Tier4 to T4Devkit#275
ktro2828 wants to merge 2 commits into
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refactor/class/t4devkit

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What

This pull request performs a comprehensive renaming of the main database class from Tier4 to T4Devkit throughout the codebase, documentation, and tests. The change standardizes the naming, updates all relevant import statements, docstrings, and user-facing messages, and marks the old Tier4 class as deprecated in favor of T4Devkit. This ensures consistency and clarity for users and developers interacting with the library.

Core class renaming and deprecation:

  • Renamed the primary database class from Tier4 to T4Devkit in t4_devkit/tier4.py, updated all references, and marked Tier4 as deprecated with a warning to use T4Devkit instead. [1] [2]

These changes ensure a smooth transition to the new class name and maintain backward compatibility by deprecating the old class rather than removing it immediately.

Signed-off-by: ktro2828 <kotaro.uetake@tier4.jp>
Signed-off-by: ktro2828 <kotaro.uetake@tier4.jp>
@github-actions github-actions Bot added ci Continuous Integration (CI) processes and testing documentation Improvements or additions to documentation refactor Refactoring code or increasing performance labels Apr 24, 2026
@ktro2828 ktro2828 linked an issue Apr 24, 2026 that may be closed by this pull request
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github-actions Bot commented Apr 24, 2026

☂️ Python Coverage

current status: ❌

Overall Coverage

Lines Covered Coverage Threshold Status
4225 3496 83% 50% 🟢

New Files

No new covered files...

Modified Files

File Coverage Status
t4_devkit/helper/rendering.py 18% 🔴
t4_devkit/helper/timeseries.py 27% 🔴
t4_devkit/sanity/safety.py 100% 🟢
t4_devkit/sanity/tier4/tiv001.py 96% 🟢
t4_devkit/tier4.py 83% 🟢
TOTAL 65% 🔴

updated for commit: f6c70c4 by action🐍

@ktro2828 ktro2828 requested a review from KSeangTan April 24, 2026 08:45
@ktro2828 ktro2828 changed the title refactor: Rename Tier4 to T4Devkit refactor: rename Tier4 to T4Devkit Apr 24, 2026
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Suggestion to rename the class Tier4

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