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cpython/Lib/warnings.py at main · python/cpython · GitHub

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import sys

__all__ = [

"warn",

"warn_explicit",

"showwarning",

"formatwarning",

"filterwarnings",

"simplefilter",

"resetwarnings",

"catch_warnings",

"deprecated",

]

from _py_warnings import (

WarningMessage,

_DEPRECATED_MSG,

_OptionError,

_add_filter,

_deprecated,

_filters_mutated,

_filters_mutated_lock_held,

_filters_version,

_formatwarning_orig,

_formatwarnmsg,

_formatwarnmsg_impl,

_get_context,

_get_filters,

_getaction,

_getcategory,

_is_filename_to_skip,

_is_internal_filename,

_is_internal_frame,

_lock,

_new_context,

_next_external_frame,

_processoptions,

_set_context,

_set_module,

_setoption,

_setup_defaults,

_showwarning_orig,

_showwarnmsg,

_showwarnmsg_impl,

_use_context,

_warn_unawaited_coroutine,

_warnings_context,

catch_warnings,

defaultaction,

deprecated,

filters,

filterwarnings,

formatwarning,

onceregistry,

resetwarnings,

showwarning,

simplefilter,

warn,

warn_explicit,

)

try:

# Try to use the C extension, this will replace some parts of the

# _py_warnings implementation imported above.

from _warnings import (

_acquire_lock,

_defaultaction as defaultaction,

_filters_mutated_lock_held,

_onceregistry as onceregistry,

_release_lock,

_warnings_context,

filters,

warn,

warn_explicit,

)

_warnings_defaults = True

class _Lock:

def __enter__(self):

_acquire_lock()

return self

def __exit__(self, *args):

_release_lock()

_lock = _Lock()

except ImportError:

_warnings_defaults = False

# Module initialization

_set_module(sys.modules[__name__])

_processoptions(sys.warnoptions)

if not _warnings_defaults:

_setup_defaults()

del _warnings_defaults

del _setup_defaults

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