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Preview: format_helpers.py Size: 2.35 KB

//lib64/python3.12/asyncio/format_helpers.py

import functools
import inspect
import reprlib
import sys
import traceback

from . import constants


def _get_function_source(func):
    func = inspect.unwrap(func)
    if inspect.isfunction(func):
        code = func.__code__
        return (code.co_filename, code.co_firstlineno)
    if isinstance(func, functools.partial):
        return _get_function_source(func.func)
    if isinstance(func, functools.partialmethod):
        return _get_function_source(func.func)
    return None


def _format_callback_source(func, args):
    func_repr = _format_callback(func, args, None)
    source = _get_function_source(func)
    if source:
        func_repr += f' at {source[0]}:{source[1]}'
    return func_repr


def _format_args_and_kwargs(args, kwargs):
    """Format function arguments and keyword arguments.

    Special case for a single parameter: ('hello',) is formatted as ('hello').
    """
    # use reprlib to limit the length of the output
    items = []
    if args:
        items.extend(reprlib.repr(arg) for arg in args)
    if kwargs:
        items.extend(f'{k}={reprlib.repr(v)}' for k, v in kwargs.items())
    return '({})'.format(', '.join(items))


def _format_callback(func, args, kwargs, suffix=''):
    if isinstance(func, functools.partial):
        suffix = _format_args_and_kwargs(args, kwargs) + suffix
        return _format_callback(func.func, func.args, func.keywords, suffix)

    if hasattr(func, '__qualname__') and func.__qualname__:
        func_repr = func.__qualname__
    elif hasattr(func, '__name__') and func.__name__:
        func_repr = func.__name__
    else:
        func_repr = repr(func)

    func_repr += _format_args_and_kwargs(args, kwargs)
    if suffix:
        func_repr += suffix
    return func_repr


def extract_stack(f=None, limit=None):
    """Replacement for traceback.extract_stack() that only does the
    necessary work for asyncio debug mode.
    """
    if f is None:
        f = sys._getframe().f_back
    if limit is None:
        # Limit the amount of work to a reasonable amount, as extract_stack()
        # can be called for each coroutine and future in debug mode.
        limit = constants.DEBUG_STACK_DEPTH
    stack = traceback.StackSummary.extract(traceback.walk_stack(f),
                                           limit=limit,
                                           lookup_lines=False)
    stack.reverse()
    return stack

Name	Size	Perms	Modified	Actions
__pycache__ DIR	-	drwxr-xr-x	2026-01-08 23:02:23	Edit Download recursive recursive
base_events.py	76.73 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
base_futures.py	1.93 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
base_subprocess.py	8.66 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
base_tasks.py	2.61 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
constants.py	1.38 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
coroutines.py	3.26 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
events.py	28.65 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
exceptions.py	1.71 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
format_helpers.py	2.35 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
futures.py	14.00 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
locks.py	18.55 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
log.py	124 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
mixins.py	481 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
proactor_events.py	32.71 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
protocols.py	6.79 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
queues.py	7.79 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
runners.py	7.06 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
selector_events.py	47.20 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
sslproto.py	31.15 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
staggered.py	6.91 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
streams.py	26.97 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
subprocess.py	7.56 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
taskgroups.py	9.33 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
tasks.py	36.49 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
threads.py	790 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
timeouts.py	5.20 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
transports.py	10.47 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
trsock.py	2.42 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
unix_events.py	51.88 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
windows_events.py	31.82 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
windows_utils.py	4.94 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
__init__.py	1.19 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
__main__.py	3.41 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive

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