bpo-32043: Rephrase -X dev documentation (#4478) · python/cpython@bc9b6e2 (original) (raw)

`@@ -411,8 +411,10 @@ Miscellaneous options

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` nested imports). Note that its output may be broken in multi-threaded

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``` application. Typical usage is ``python3 -X importtime -c 'import


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```  asyncio'``. See also :envvar:`PYTHONPROFILEIMPORTTIME`.

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 * ``-X dev`` enables the "developer mode": enable debug checks at runtime.

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Developer mode:

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 * ``-X dev``: enable CPython's "developer mode", introducing additional

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runtime checks which are too expensive to be enabled by default. It should

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not be more verbose than the default if the code is correct: new warnings

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are only emitted when an issue is detected. Effect of the developer mode:

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``` * Warning filters: add a filter to display all warnings ("default"


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``  action), except of :exc:`BytesWarning` which still depends on the

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`@@ -441,8 +443,7 @@ Miscellaneous options

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```  The ``-X showalloccount`` option.

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` .. versionadded:: 3.7

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 The ``-X importtime``, ``-X dev`` and :envvar:`PYTHONPROFILEIMPORTTIME`

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options.

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 The ``-X importtime`` and ``-X dev`` options.

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`Options you shouldn't use