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Loguru logging#113

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loguru-logging
Open

Loguru logging#113
Hendrik-code wants to merge 4 commits into
mainfrom
loguru-logging

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@Hendrik-code Hendrik-code commented Jun 29, 2026

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Summary

Migrates the TPTBox.logger emission layer to Loguru while keeping the public API and terminal color coding unchanged. This is a Loguru-backed facade: every public class, method signature, Log_Type, verbose semantic,
sub-logger, String_Logger, Reflection_Logger, the global log, the logging alias, on_*/print_error/log_statistic, .prefix/.default_verbose, and create_from_bids are preserved.
Loguru replaces only the two emission primitives (the terminal write and the Logger file write), all isolated behind a new TPTBox/logger/_loguru_backend.py (the only module that imports loguru).

Backwards compatibility & color coding

  • Each Log_Type maps to a custom TPTBOX_* Loguru level whose color markup reproduces the exact original ANSI (<light-cyan>\033[96m, <bg blue>\033[44m, <italic>, <underline>, …).
  • A new regression test (unit_tests/test_logger.py, 10 tests) locks the contract against type2bcolors. Verified: 28/28 golden cases render identically (only invisible reset-code differences) and all 15 non-default Log_Types emit the exact color code.
  • end="\r" progress lines are preserved (the terminal sink honors end instead of Loguru's forced newline), WARNING_THROW still routes to warnings.warn, and verbose=False still suppresses.
  • File output stays ANSI-free with the exact filename scheme, header, and duration lines; multiple Loggers stay isolated.
  • Full suite: 405 passed / 4 skipped (395 prior + 10 new logger tests). The logger is imported package-wide, so this is the integration proof.

New capabilities (all opt-in, no behavior change by default)

  1. Thread/process-safe writes (verified: 3200 concurrent lines, zero interleaving). enqueue=True for multiprocessing.
  2. File rotation & retention: Logger(..., rotation="20 MB", retention="10 days", enqueue=True).
  3. User sinks / JSON / level filtering: from TPTBox.logger import loguru_logger; loguru_logger.add("run.jsonl", serialize=True, level="TPTBOX_WARNING").
  4. Exception capture: print_error emits a structured record to user sinks; opt-in install_excepthook() routes uncaught exceptions through Loguru.

Notes for reviewers

  • Global take-over: TPTBox configures the global Loguru logger at import (drops Loguru's default handler). Opt out with TPTBOX_LOGGER_TAKEOVER=0 set before importing TPTBox.
    Configuring eagerly at import (rather than lazily) is deliberate — it ensures user sinks added afterwards are never wiped by the take-over logger.remove().
  • Adds loguru = "^0.7.2" to pyproject.toml.
  • Coloring is now Loguru-native (level-driven) rather than hand-rolled ANSI, so terminal output is visually identical but not byte-identical (it differs only by redundant reset codes) — this matches the agreed "Loguru-native coloring" choice.

Hendrik-code and others added 4 commits June 29, 2026 11:51
…vels)

Add loguru dep and a new TPTBox/logger/_loguru_backend.py: each Log_Type maps to
a custom TPTBOX_* Loguru level whose color markup reproduces the exact ANSI of
type2bcolors (light-cyan->96, bg blue->44, ...). print_to_terminal now emits via
a colorized Loguru function-sink (writing to the live sys.stdout, honoring end so
end='\r' progress lines are intact). WARNING_THROW still routes to warnings.warn.

Public API/classes/verbose semantics unchanged. Verified: 28/28 golden cases
render identically (only invisible reset-code differences) and all 15 non-default
Log_Types emit the exact expected color code.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…on/retention)

Logger now writes via a Loguru file sink instead of raw file.write. Default
keeps its own handle behind a Loguru function-sink (flush() works, 'end'
honored, ANSI-free, atexit-safe duration line). New rotation=/retention=/enqueue
kwargs switch to a Loguru-owned path sink for rotation & retention. Per-instance
record filtering keeps multiple Loggers' files isolated.

Verified: exact filename scheme + header/duration lines, no ANSI in files,
rotation produces multiple files, two-logger isolation, and the duration line is
still written at interpreter exit for unclosed loggers.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…r sinks

print_error now also emits a structured Loguru record (opt(exception=True), bound
to an 'exception' channel the default sinks ignore) so user sinks capture the
traceback; the human-readable text output is unchanged. Add install_excepthook()
to route uncaught exceptions through Loguru (opt-in). Re-export configure,
install_excepthook, and the configured loguru_logger from TPTBox.logger so callers
can attach their own sinks (JSON via serialize=True, level filtering on TPTBOX_*).

Configure now runs eagerly at import so the take-over logger.remove() only drops
Loguru's own default handler and never wipes user sinks added afterwards.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Add unit_tests/test_logger.py (10 tests) asserting the backwards-compat contract:
per-Log_Type terminal coloring matches type2bcolors, carriage-return end
preserved, WARNING_THROW->warnings.warn, verbose gating, ANSI-free + isolated
file output, and structured exception capture into user sinks. Document the
Loguru backend, TPTBOX_* levels, take-over opt-out, rotation/retention, user
sinks, and exception capture in the logger README.

Full unit suite: 405 passed / 4 skipped; thread safety verified (3200 concurrent
lines, no interleaving).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Copilot AI review requested due to automatic review settings June 29, 2026 12:49

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Copilot was unable to review this pull request because the user who requested the review has reached their quota limit.

@Hendrik-code Hendrik-code requested a review from robert-graf June 29, 2026 12:55
@Hendrik-code Hendrik-code linked an issue Jun 29, 2026 that may be closed by this pull request
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