Issue #19138: doctest's IGNORE_EXCEPTION_DETAIL now allows no detail at all.
(grafted from c80083ad142db2939507800c755082293a87f2de)
diff --git a/Lib/test/test_doctest.py b/Lib/test/test_doctest.py
index 8f8c7c7..86259c3 100644
--- a/Lib/test/test_doctest.py
+++ b/Lib/test/test_doctest.py
@@ -1020,6 +1020,33 @@
ValueError: message
TestResults(failed=1, attempted=1)
+If the exception does not have a message, you can still use
+IGNORE_EXCEPTION_DETAIL to normalize the modules between Python 2 and 3:
+
+ >>> def f(x):
+ ... r'''
+ ... >>> from http.client import HTTPException
+ ... >>> raise HTTPException() #doctest: +IGNORE_EXCEPTION_DETAIL
+ ... Traceback (most recent call last):
+ ... foo.bar.HTTPException
+ ... '''
+ >>> test = doctest.DocTestFinder().find(f)[0]
+ >>> doctest.DocTestRunner(verbose=False).run(test)
+ TestResults(failed=0, attempted=2)
+
+Note that a trailing colon doesn't matter either:
+
+ >>> def f(x):
+ ... r'''
+ ... >>> from http.client import HTTPException
+ ... >>> raise HTTPException() #doctest: +IGNORE_EXCEPTION_DETAIL
+ ... Traceback (most recent call last):
+ ... foo.bar.HTTPException:
+ ... '''
+ >>> test = doctest.DocTestFinder().find(f)[0]
+ >>> doctest.DocTestRunner(verbose=False).run(test)
+ TestResults(failed=0, attempted=2)
+
If an exception is raised but not expected, then it is reported as an
unexpected exception: