[New-bugs-announce] [issue26604] Add optional source parameter to warnings.warn()

[STINNER Victor]

New submission from STINNER Victor:

Follow-up of the issue #26567 which added PyErr_ResourceWarning() (C API), attached patch adds a new source parameter to the warnings.warn() function (Python API).

source is the destroyed object which emits a ResourceWarning. The source is used to show the traceback where the object was created (allocated) when tracemalloc is used.

The patch also changes _pyio, asyncio and asyncore modules to set the source parameter.

Note: tempfile doesn't set source because it uses a class method:

    @classmethod
    def _cleanup(cls, name, warn_message):
        _shutil.rmtree(name)
        _warnings.warn(warn_message, ResourceWarning)

----------
files: warnings_warn_source.patch
keywords: patch
messages: 262137
nosy: haypo
priority: normal
severity: normal
status: open
title: Add optional source parameter to warnings.warn()
type: enhancement
versions: Python 3.6
Added file: http://bugs.python.org/file42236/warnings_warn_source.patch

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue26604>
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