Issue #25523: Correct "a" article to "an" article
This changes the main documentation, doc strings, source code comments, and a
couple error messages in the test suite. In some cases the word was removed
or edited some other way to fix the grammar.
diff --git a/Objects/exceptions.c b/Objects/exceptions.c
index c76eca8..1a218c1 100644
--- a/Objects/exceptions.c
+++ b/Objects/exceptions.c
@@ -867,7 +867,7 @@
static int
oserror_use_init(PyTypeObject *type)
{
- /* When __init__ is defined in a OSError subclass, we want any
+ /* When __init__ is defined in an OSError subclass, we want any
extraneous argument to __new__ to be ignored. The only reasonable
solution, given __new__ takes a variable number of arguments,
is to defer arg parsing and initialization to __init__.