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Fixed #31069, Refs #26431 -- Doc'd RegexPattern behavior change in passing optional named groups in Django 3.0.
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@ -548,6 +548,10 @@ Miscellaneous
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* Support for ``sqlparse`` < 0.2.2 is removed.
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* ``RegexPattern``, used by :func:`~django.urls.re_path`, no longer returns
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keyword arguments with ``None`` values to be passed to the view for the
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optional named groups that are missing.
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.. _deprecated-features-3.0:
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Features deprecated in 3.0
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@ -56,10 +56,15 @@ algorithm the system follows to determine which Python code to execute:
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* If the matched URL pattern contained no named groups, then the
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matches from the regular expression are provided as positional arguments.
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* The keyword arguments are made up of any named parts matched by the
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path expression, overridden by any arguments specified in the optional
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``kwargs`` argument to :func:`django.urls.path` or
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path expression that are provided, overridden by any arguments specified
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in the optional ``kwargs`` argument to :func:`django.urls.path` or
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:func:`django.urls.re_path`.
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.. versionchanged:: 3.0
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In older versions, the keyword arguments with ``None`` values are
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made up also for not provided named parts.
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#. If no URL pattern matches, or if an exception is raised during any
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point in this process, Django invokes an appropriate
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error-handling view. See `Error handling`_ below.
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