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-rw-r--r--Doc/library/exceptions.rst16
1 files changed, 14 insertions, 2 deletions
diff --git a/Doc/library/exceptions.rst b/Doc/library/exceptions.rst
index 52a505e0a0..df2cda9d67 100644
--- a/Doc/library/exceptions.rst
+++ b/Doc/library/exceptions.rst
@@ -688,6 +688,10 @@ The following exceptions are used as warning categories; see the
Base class for warnings about deprecated features when those warnings are
intended for other Python developers.
+ Ignored by the default warning filters, except in the ``__main__`` module
+ (:pep:`565`). Enabling the :ref:`Python Development Mode <devmode>` shows
+ this warning.
+
.. exception:: PendingDeprecationWarning
@@ -699,6 +703,9 @@ The following exceptions are used as warning categories; see the
upcoming deprecation is unusual, and :exc:`DeprecationWarning`
is preferred for already active deprecations.
+ Ignored by the default warning filters. Enabling the :ref:`Python
+ Development Mode <devmode>` shows this warning.
+
.. exception:: SyntaxWarning
@@ -720,6 +727,9 @@ The following exceptions are used as warning categories; see the
Base class for warnings about probable mistakes in module imports.
+ Ignored by the default warning filters. Enabling the :ref:`Python
+ Development Mode <devmode>` shows this warning.
+
.. exception:: UnicodeWarning
@@ -733,8 +743,10 @@ The following exceptions are used as warning categories; see the
.. exception:: ResourceWarning
- Base class for warnings related to resource usage. Ignored by the default
- warning filters.
+ Base class for warnings related to resource usage.
+
+ Ignored by the default warning filters. Enabling the :ref:`Python
+ Development Mode <devmode>` shows this warning.
.. versionadded:: 3.2