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__pycache__	-	Open
base_events.py	72.45 MB	View DL Edit
base_futures.py	2.51 MB	View DL Edit
base_subprocess.py	8.64 MB	View DL Edit
base_tasks.py	2.41 MB	View DL Edit
constants.py	888 B	View DL Edit
coroutines.py	8.59 MB	View DL Edit
events.py	25.83 MB	View DL Edit
exceptions.py	1.59 MB	View DL Edit
format_helpers.py	2.35 MB	View DL Edit
futures.py	13.71 MB	View DL Edit
locks.py	14.83 MB	View DL Edit
log.py	124 B	View DL Edit
proactor_events.py	31.39 MB	View DL Edit
protocols.py	6.79 MB	View DL Edit
queues.py	8.11 MB	View DL Edit
runners.py	2.08 MB	View DL Edit
selector_events.py	38.57 MB	View DL Edit
sslproto.py	26.82 MB	View DL Edit
staggered.py	5.85 MB	View DL Edit
streams.py	26.03 MB	View DL Edit
subprocess.py	7.88 MB	View DL Edit
tasks.py	33.61 MB	View DL Edit
threads.py	790 B	View DL Edit
transports.py	10.47 MB	View DL Edit
trsock.py	5.74 MB	View DL Edit
unix_events.py	50.54 MB	View DL Edit
windows_events.py	32.28 MB	View DL Edit
windows_utils.py	4.94 MB	View DL Edit
__init__.py	1.25 MB	View DL Edit
__main__.py	3.3 MB	View DL Edit

Edit file: /usr/lib64/python3.9/asyncio/coroutines.py

__all__ = 'coroutine', 'iscoroutinefunction', 'iscoroutine'

import collections.abc
import functools
import inspect
import os
import sys
import traceback
import types
import warnings

from . import base_futures
from . import constants
from . import format_helpers
from .log import logger

def _is_debug_mode():
    # If you set _DEBUG to true, @coroutine will wrap the resulting
    # generator objects in a CoroWrapper instance (defined below).  That
    # instance will log a message when the generator is never iterated
    # over, which may happen when you forget to use "await" or "yield from"
    # with a coroutine call.
    # Note that the value of the _DEBUG flag is taken
    # when the decorator is used, so to be of any use it must be set
    # before you define your coroutines.  A downside of using this feature
    # is that tracebacks show entries for the CoroWrapper.__next__ method
    # when _DEBUG is true.
    return sys.flags.dev_mode or (not sys.flags.ignore_environment and
                                  bool(os.environ.get('PYTHONASYNCIODEBUG')))

_DEBUG = _is_debug_mode()

class CoroWrapper:
    # Wrapper for coroutine object in _DEBUG mode.

def __init__(self, gen, func=None):
        assert inspect.isgenerator(gen) or inspect.iscoroutine(gen), gen
        self.gen = gen
        self.func = func  # Used to unwrap @coroutine decorator
        self._source_traceback = format_helpers.extract_stack(sys._getframe(1))
        self.__name__ = getattr(gen, '__name__', None)
        self.__qualname__ = getattr(gen, '__qualname__', None)

def __repr__(self):
        coro_repr = _format_coroutine(self)
        if self._source_traceback:
            frame = self._source_traceback[-1]
            coro_repr += f', created at {frame[0]}:{frame[1]}'

return f'<{self.__class__.__name__} {coro_repr}>'

def __iter__(self):
        return self

def __next__(self):
        return self.gen.send(None)

def send(self, value):
        return self.gen.send(value)

def throw(self, type, value=None, traceback=None):
        return self.gen.throw(type, value, traceback)

def close(self):
        return self.gen.close()

@property
    def gi_frame(self):
        return self.gen.gi_frame

@property
    def gi_running(self):
        return self.gen.gi_running

@property
    def gi_code(self):
        return self.gen.gi_code

def __await__(self):
        return self

@property
    def gi_yieldfrom(self):
        return self.gen.gi_yieldfrom

def __del__(self):
        # Be careful accessing self.gen.frame -- self.gen might not exist.
        gen = getattr(self, 'gen', None)
        frame = getattr(gen, 'gi_frame', None)
        if frame is not None and frame.f_lasti == -1:
            msg = f'{self!r} was never yielded from'
            tb = getattr(self, '_source_traceback', ())
            if tb:
                tb = ''.join(traceback.format_list(tb))
                msg += (f'\nCoroutine object created at '
                        f'(most recent call last, truncated to '
                        f'{constants.DEBUG_STACK_DEPTH} last lines):\n')
                msg += tb.rstrip()
            logger.error(msg)

def coroutine(func):
    """Decorator to mark coroutines.

If the coroutine is not yielded from before it is destroyed,
    an error message is logged.
    """
    warnings.warn('"@coroutine" decorator is deprecated since Python 3.8, use "async def" instead',
                  DeprecationWarning,
                  stacklevel=2)
    if inspect.iscoroutinefunction(func):
        # In Python 3.5 that's all we need to do for coroutines
        # defined with "async def".
        return func

if inspect.isgeneratorfunction(func):
        coro = func
    else:
        @functools.wraps(func)
        def coro(*args, **kw):
            res = func(*args, **kw)
            if (base_futures.isfuture(res) or inspect.isgenerator(res) or
                    isinstance(res, CoroWrapper)):
                res = yield from res
            else:
                # If 'res' is an awaitable, run it.
                try:
                    await_meth = res.__await__
                except AttributeError:
                    pass
                else:
                    if isinstance(res, collections.abc.Awaitable):
                        res = yield from await_meth()
            return res

coro = types.coroutine(coro)
    if not _DEBUG:
        wrapper = coro
    else:
        @functools.wraps(func)
        def wrapper(*args, **kwds):
            w = CoroWrapper(coro(*args, **kwds), func=func)
            if w._source_traceback:
                del w._source_traceback[-1]
            # Python < 3.5 does not implement __qualname__
            # on generator objects, so we set it manually.
            # We use getattr as some callables (such as
            # functools.partial may lack __qualname__).
            w.__name__ = getattr(func, '__name__', None)
            w.__qualname__ = getattr(func, '__qualname__', None)
            return w

wrapper._is_coroutine = _is_coroutine  # For iscoroutinefunction().
    return wrapper

# A marker for iscoroutinefunction.
_is_coroutine = object()

def iscoroutinefunction(func):
    """Return True if func is a decorated coroutine function."""
    return (inspect.iscoroutinefunction(func) or
            getattr(func, '_is_coroutine', None) is _is_coroutine)

# Prioritize native coroutine check to speed-up
# asyncio.iscoroutine.
_COROUTINE_TYPES = (types.CoroutineType, types.GeneratorType,
                    collections.abc.Coroutine, CoroWrapper)
_iscoroutine_typecache = set()

def iscoroutine(obj):
    """Return True if obj is a coroutine object."""
    if type(obj) in _iscoroutine_typecache:
        return True

if isinstance(obj, _COROUTINE_TYPES):
        # Just in case we don't want to cache more than 100
        # positive types.  That shouldn't ever happen, unless
        # someone stressing the system on purpose.
        if len(_iscoroutine_typecache) < 100:
            _iscoroutine_typecache.add(type(obj))
        return True
    else:
        return False

def _format_coroutine(coro):
    assert iscoroutine(coro)

is_corowrapper = isinstance(coro, CoroWrapper)

def get_name(coro):
        # Coroutines compiled with Cython sometimes don't have
        # proper __qualname__ or __name__.  While that is a bug
        # in Cython, asyncio shouldn't crash with an AttributeError
        # in its __repr__ functions.
        if is_corowrapper:
            return format_helpers._format_callback(coro.func, (), {})

if hasattr(coro, '__qualname__') and coro.__qualname__:
            coro_name = coro.__qualname__
        elif hasattr(coro, '__name__') and coro.__name__:
            coro_name = coro.__name__
        else:
            # Stop masking Cython bugs, expose them in a friendly way.
            coro_name = f'<{type(coro).__name__} without __name__>'
        return f'{coro_name}()'

def is_running(coro):
        try:
            return coro.cr_running
        except AttributeError:
            try:
                return coro.gi_running
            except AttributeError:
                return False

coro_code = None
    if hasattr(coro, 'cr_code') and coro.cr_code:
        coro_code = coro.cr_code
    elif hasattr(coro, 'gi_code') and coro.gi_code:
        coro_code = coro.gi_code

coro_name = get_name(coro)

if not coro_code:
        # Built-in types might not have __qualname__ or __name__.
        if is_running(coro):
            return f'{coro_name} running'
        else:
            return coro_name

coro_frame = None
    if hasattr(coro, 'gi_frame') and coro.gi_frame:
        coro_frame = coro.gi_frame
    elif hasattr(coro, 'cr_frame') and coro.cr_frame:
        coro_frame = coro.cr_frame

# If Cython's coroutine has a fake code object without proper
    # co_filename -- expose that.
    filename = coro_code.co_filename or '<empty co_filename>'

lineno = 0
    if (is_corowrapper and
            coro.func is not None and
            not inspect.isgeneratorfunction(coro.func)):
        source = format_helpers._get_function_source(coro.func)
        if source is not None:
            filename, lineno = source
        if coro_frame is None:
            coro_repr = f'{coro_name} done, defined at {filename}:{lineno}'
        else:
            coro_repr = f'{coro_name} running, defined at {filename}:{lineno}'

elif coro_frame is not None:
        lineno = coro_frame.f_lineno
        coro_repr = f'{coro_name} running at {filename}:{lineno}'

else:
        lineno = coro_code.co_firstlineno
        coro_repr = f'{coro_name} done, defined at {filename}:{lineno}'

return coro_repr

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