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//lib/python3/dist-packages/twisted/logger/_util.py

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# -*- test-case-name: twisted.logger.test.test_util -*-
# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.

"""
Logging utilities.
"""

from typing import List

from ._interfaces import LogTrace
from ._logger import Logger

def formatTrace(trace: LogTrace) -> str:
    """
    Format a trace (that is, the contents of the C{log_trace} key of a log
    event) as a visual indication of the message's propagation through various
    observers.

@param trace: the contents of the C{log_trace} key from an event.

@return: A multi-line string with indentation and arrows indicating the
        flow of the message through various observers.
    """

def formatWithName(obj: object) -> str:
        if hasattr(obj, "name"):
            return f"{obj} ({obj.name})"
        else:
            return f"{obj}"

result = []
    lineage: List[Logger] = []

for parent, child in trace:
        if not lineage or lineage[-1] is not parent:
            if parent in lineage:
                while lineage[-1] is not parent:
                    lineage.pop()

else:
                if not lineage:
                    result.append(f"{formatWithName(parent)}\n")

lineage.append(parent)

result.append("  " * len(lineage))
        result.append(f"-> {formatWithName(child)}\n")

return "".join(result)

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__pycache__ DIR	-	drwxr-xr-x	2026-01-08 12:56:23	Edit Download recursive recursive
_buffer.py	1.49 KB	lrw-r--r--	2024-08-27 10:30:39	Edit Download recursive recursive
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_flatten.py	4.88 KB	lrw-r--r--	2024-08-27 10:30:39	Edit Download recursive recursive
_format.py	13.16 KB	lrw-r--r--	2024-08-27 10:30:39	Edit Download recursive recursive
_global.py	8.43 KB	lrw-r--r--	2024-08-27 10:30:39	Edit Download recursive recursive
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_logger.py	9.75 KB	lrw-r--r--	2024-08-27 10:30:39	Edit Download recursive recursive
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