[3.11] Trim trailing whitespace and test on CI (GH-104275)

.github/CODEOWNERS

@@ -5,7 +5,10 @@
 # https://git-scm.com/docs/gitignore#_pattern_format
 
 # GitHub
-.github/**                    @ezio-melotti
+.github/**                    @ezio-melotti @hugovk
+
+# pre-commit
+.pre-commit-config.yaml       @hugovk @AlexWaygood
 
 # asyncio
 **/*asyncio*                  @1st1 @asvetlov

.github/workflows/lint.yml

@@ -0,0 +1,22 @@
+name: Lint
+
+on: [push, pull_request, workflow_dispatch]
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "3.x"
+      - uses: pre-commit/action@v3.0.0

.pre-commit-config.yaml

@@ -0,0 +1,7 @@
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.4.0
+    hooks:
+      - id: check-yaml
+      - id: trailing-whitespace
+        types_or: [c, python, rst]

Lib/test/test_asyncio/test_runners.py

@@ -441,7 +441,7 @@ async def coro():
         with asyncio.Runner() as runner:
             with self.assertRaises(asyncio.CancelledError):
                 runner.run(coro())
-    
+
     def test_signal_install_not_supported_ok(self):
         # signal.signal() can throw if the "main thread" doensn't have signals enabled
         assert threading.current_thread() is threading.main_thread()

Lib/test/test_isinstance.py

@@ -8,7 +8,6 @@
 from test import support
 
 
-
 class TestIsInstanceExceptions(unittest.TestCase):
     # Test to make sure that an AttributeError when accessing the instance's
     # class's bases is masked.  This was actually a bug in Python 2.2 and
@@ -97,7 +96,7 @@ def getclass(self):
         class D: pass
         self.assertRaises(RuntimeError, isinstance, c, D)
 
-
+
 # These tests are similar to above, but tickle certain code paths in
 # issubclass() instead of isinstance() -- really PyObject_IsSubclass()
 # vs. PyObject_IsInstance().
@@ -147,7 +146,6 @@ def getbases(self):
         self.assertRaises(TypeError, issubclass, B, C())
 
 
-
 # meta classes for creating abstract classes and instances
 class AbstractClass(object):
     def __init__(self, bases):
@@ -179,7 +177,7 @@ class Super:
 
 class Child(Super):
     pass
-
+
 class TestIsInstanceIsSubclass(unittest.TestCase):
     # Tests to ensure that isinstance and issubclass work on abstract
     # classes and instances.  Before the 2.2 release, TypeErrors were
@@ -357,6 +355,6 @@ def blowstack(fxn, arg, compare_to):
         tuple_arg = (tuple_arg,)
         fxn(arg, tuple_arg)
 
-
+
 if __name__ == '__main__':
     unittest.main()

Modules/_blake2/blake2module.h

@@ -38,6 +38,6 @@
 #endif // HAVE_LIBB2
 
 // for secure_zero_memory(), store32(), store48(), and store64()
-#include "impl/blake2-impl.h" 
+#include "impl/blake2-impl.h"
 
 #endif // Py_BLAKE2MODULE_H

Modules/_blake2/impl/blake2b-round.h

@@ -62,7 +62,7 @@
   \
   row2l = _mm_roti_epi64(row2l, -24); \
   row2h = _mm_roti_epi64(row2h, -24); \
- 
+
 #define G2(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h,b0,b1) \
   row1l = _mm_add_epi64(_mm_add_epi64(row1l, b0), row2l); \
   row1h = _mm_add_epi64(_mm_add_epi64(row1h, b1), row2h); \
@@ -81,7 +81,7 @@
   \
   row2l = _mm_roti_epi64(row2l, -63); \
   row2h = _mm_roti_epi64(row2h, -63); \
- 
+
 #if defined(HAVE_SSSE3)
 #define DIAGONALIZE(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h) \
   t0 = _mm_alignr_epi8(row2h, row2l, 8); \

Modules/_blake2/impl/blake2s-load-xop.h

@@ -166,7 +166,7 @@ buf = _mm_perm_epi8(t1, m3, _mm_set_epi32(TOB(3),TOB(2),TOB(1),TOB(7)) );
 #define LOAD_MSG_8_3(buf) \
 t0 = _mm_perm_epi8(m0, m2, _mm_set_epi32(TOB(6),TOB(1),TOB(0),TOB(0)) ); \
 buf = _mm_perm_epi8(t0, m3, _mm_set_epi32(TOB(3),TOB(2),TOB(5),TOB(4)) ); \
- 
+
 #define LOAD_MSG_8_4(buf) \
 buf = _mm_perm_epi8(m0, m1, _mm_set_epi32(TOB(5),TOB(4),TOB(7),TOB(2)) );
 

Modules/_blake2/impl/blake2s-round.h

@@ -86,6 +86,6 @@
   LOAD_MSG_ ##r ##_4(buf4); \
   G2(row1,row2,row3,row4,buf4); \
   UNDIAGONALIZE(row1,row2,row3,row4); \
- 
+
 #endif
 

Modules/_ctypes/darwin/dlfcn.h

@@ -1,7 +1,7 @@
 /*
 Copyright (c) 2002 Jorge Acereda  <jacereda@users.sourceforge.net> &
                    Peter O'Gorman <ogorman@users.sourceforge.net>
-                   
+
 Portions may be copyright others, see the AUTHORS file included with this
 distribution.
 

Modules/_ctypes/libffi_osx/ffi.c

@@ -65,12 +65,12 @@ initialize_aggregate(
 
 		arg->size		= ALIGN(arg->size, curalign);
 		arg->size		+= (*ptr)->size;
-		arg->alignment	= (arg->alignment > curalign) ? 
+		arg->alignment	= (arg->alignment > curalign) ?
 			arg->alignment : curalign;
 #else
 		arg->size		= ALIGN(arg->size, (*ptr)->alignment);
 		arg->size		+= (*ptr)->size;
-		arg->alignment	= (arg->alignment > (*ptr)->alignment) ? 
+		arg->alignment	= (arg->alignment > (*ptr)->alignment) ?
 			arg->alignment : (*ptr)->alignment;
 #endif
 
@@ -130,10 +130,10 @@ struct_on_stack(
 // Arguments' ffi_type->alignment must be nonzero.
 ffi_status
 ffi_prep_cif(
-/*@out@*/ /*@partial@*/	ffi_cif*		cif, 
+/*@out@*/ /*@partial@*/	ffi_cif*		cif,
 						ffi_abi			abi,
-						unsigned int	nargs, 
-/*@dependent@*/ /*@out@*/ /*@partial@*/ ffi_type*	rtype, 
+						unsigned int	nargs,
+/*@dependent@*/ /*@out@*/ /*@partial@*/ ffi_type*	rtype,
 /*@dependent@*/			ffi_type**		atypes)
 {
 	unsigned int	bytes	= 0;
@@ -184,7 +184,7 @@ ffi_prep_cif(
 		if ((*ptr)->alignment == 0)
 			return FFI_BAD_TYPEDEF;
 
-		/* Perform a sanity check on the argument type, do this 
+		/* Perform a sanity check on the argument type, do this
 		check after the initialization.  */
 		FFI_ASSERT_VALID_TYPE(*ptr);
 

Modules/_ctypes/libffi_osx/include/ffi.h

@@ -199,9 +199,9 @@ typedef union {
 
 void
 ffi_raw_call(
-/*@dependent@*/	ffi_cif*	cif, 
-				void		(*fn)(void), 
-/*@out@*/		void*		rvalue, 
+/*@dependent@*/	ffi_cif*	cif,
+				void		(*fn)(void),
+/*@out@*/		void*		rvalue,
 /*@dependent@*/	ffi_raw*	avalue);
 
 void
@@ -225,9 +225,9 @@ ffi_raw_size(
 	longs and doubles are followed by an empty 64-bit word.	*/
 void
 ffi_java_raw_call(
-/*@dependent@*/	ffi_cif*	cif, 
-				void		(*fn)(void), 
-/*@out@*/		void*		rvalue, 
+/*@dependent@*/	ffi_cif*	cif,
+				void		(*fn)(void),
+/*@out@*/		void*		rvalue,
 /*@dependent@*/	ffi_raw*	avalue);
 
 void
@@ -272,8 +272,8 @@ typedef struct ffi_raw_closure {
 	ffi_cif*	cif;
 
 #if !FFI_NATIVE_RAW_API
-	/*	if this is enabled, then a raw closure has the same layout 
-		as a regular closure.  We use this to install an intermediate 
+	/*	if this is enabled, then a raw closure has the same layout
+		as a regular closure.  We use this to install an intermediate
 		handler to do the transaltion, void** -> ffi_raw*. */
 	void	(*translate_args)(ffi_cif*,void*,void**,void*);
 	void*	this_closure;
@@ -303,17 +303,17 @@ ffi_prep_java_raw_closure(
 
 ffi_status
 ffi_prep_cif(
-/*@out@*/ /*@partial@*/					ffi_cif*		cif, 
+/*@out@*/ /*@partial@*/					ffi_cif*		cif,
 										ffi_abi			abi,
-										unsigned int	nargs, 
-/*@dependent@*/ /*@out@*/ /*@partial@*/	ffi_type*		rtype, 
+										unsigned int	nargs,
+/*@dependent@*/ /*@out@*/ /*@partial@*/	ffi_type*		rtype,
 /*@dependent@*/							ffi_type**		atypes);
 
 void
 ffi_call(
-/*@dependent@*/	ffi_cif*	cif, 
-				void		(*fn)(void), 
-/*@out@*/		void*		rvalue, 
+/*@dependent@*/	ffi_cif*	cif,
+				void		(*fn)(void),
+/*@out@*/		void*		rvalue,
 /*@dependent@*/	void**		avalue);
 
 /* Useful for eliminating compiler warnings */

Modules/_ctypes/libffi_osx/include/ffi_common.h

@@ -41,7 +41,7 @@ char* alloca();
 #	endif
 #endif
 
-/*#if defined(FFI_DEBUG) 
+/*#if defined(FFI_DEBUG)
 #include <stdio.h>
 #endif*/
 
@@ -65,7 +65,7 @@ ffi_type_test(
 #	define FFI_ASSERT_AT(x, f, l)	((x) ? 0 : ffi_assert(#x, (f), (l)))
 #	define FFI_ASSERT_VALID_TYPE(x)	ffi_type_test(x, __FILE__, __LINE__)
 #else
-#	define FFI_ASSERT(x) 
+#	define FFI_ASSERT(x)
 #	define FFI_ASSERT_AT(x, f, l)
 #	define FFI_ASSERT_VALID_TYPE(x)
 #endif	// #ifdef FFI_DEBUG

Modules/_ctypes/libffi_osx/include/fficonfig.h

@@ -1,4 +1,4 @@
-/*	Manually created fficonfig.h for Darwin on PowerPC or Intel 
+/*	Manually created fficonfig.h for Darwin on PowerPC or Intel
 
 	This file is manually generated to do away with the need for autoconf and
 	therefore make it easier to cross-compile and build fat binaries.
@@ -33,10 +33,10 @@
 #	define	SIZEOF_DOUBLE 8
 #	if __GNUC__ >= 4
 #		define	HAVE_LONG_DOUBLE 1
-#		define	SIZEOF_LONG_DOUBLE 16 
+#		define	SIZEOF_LONG_DOUBLE 16
 #	else
 #		undef	HAVE_LONG_DOUBLE
-#		define	SIZEOF_LONG_DOUBLE 8 
+#		define	SIZEOF_LONG_DOUBLE 8
 #	endif
 
 #elif defined(__ppc64__)

Modules/_ctypes/libffi_osx/include/x86-ffitarget.h

@@ -33,7 +33,7 @@
 #	define X86
 #endif
 
-#if defined(__x86_64__) 
+#if defined(__x86_64__)
 #	ifndef X86_64
 #		define X86_64
 #	endif

Modules/_ctypes/libffi_osx/powerpc/ppc-ffi_darwin.c

@@ -891,7 +891,7 @@ ffi_closure_helper_DARWIN(
 					avalue[i] = alloca(arg_types[i]->size);
 					ffi64_struct_to_ram_form(arg_types[i], (const char*)pgr,
 						&gprSize, (const char*)pfr, &fprSize, &nf, avalue[i], NULL);
- 
+
 					ng	+= gprSize / sizeof(long);
 					pgr	+= gprSize / sizeof(long);
 					pfr	+= (fprSize - savedFPRSize) / sizeof(double);
@@ -1479,7 +1479,7 @@ ffi64_struct_to_reg_form(
 								memcpy(&outGPRs[destGMarker],
 									&inStruct[srcMarker], inType->size);
 						}
-						
+
 						srcMarker += inType->size;
 						destGMarker += inType->size;
 						i += inType->size - 1;
@@ -1561,7 +1561,7 @@ ffi64_struct_to_reg_form(
 			case FFI_TYPE_STRUCT:
 				recurseCount++;
 				ffi64_struct_to_reg_form(inType->elements[i],
-					inStruct, &srcMarker, &fprsUsed, outGPRs, 
+					inStruct, &srcMarker, &fprsUsed, outGPRs,
 					&destGMarker, outFPRs, &destFMarker);
 				recurseCount--;
 				break;

Modules/_ctypes/libffi_osx/types.c

@@ -1,6 +1,6 @@
 /* -----------------------------------------------------------------------
    types.c - Copyright (c) 1996, 1998  Red Hat, Inc.
-   
+
    Predefined ffi_types needed by libffi.
 
    Permission is hereby granted, free of charge, to any person obtaining
@@ -85,7 +85,7 @@ FFI_INTEGRAL_TYPEDEF(sint64, 8, 8, FFI_TYPE_SINT64);
 		FFI_INTEGRAL_TYPEDEF(longdouble, 12, 4, FFI_TYPE_LONGDOUBLE);
 #	endif
 
-#elif defined ARM || defined SH || defined POWERPC_AIX 
+#elif defined ARM || defined SH || defined POWERPC_AIX
 FFI_INTEGRAL_TYPEDEF(double, 8, 4, FFI_TYPE_DOUBLE);
 FFI_INTEGRAL_TYPEDEF(longdouble, 8, 4, FFI_TYPE_LONGDOUBLE);
 #elif defined POWERPC_DARWIN

Modules/_ctypes/libffi_osx/x86/x86-ffi64.c

@@ -2,8 +2,8 @@
 
 /* -----------------------------------------------------------------------
    x86-ffi64.c - Copyright (c) 2002  Bo Thorsen <bo@suse.de>
-   
-   x86-64 Foreign Function Interface 
+
+   x86-64 Foreign Function Interface
 
    Permission is hereby granted, free of charge, to any person obtaining
    a copy of this software and associated documentation files (the
@@ -208,7 +208,7 @@ classify_argument(
 
 		case FFI_TYPE_STRUCT:
 		{
-			ffi_type**				ptr; 
+			ffi_type**				ptr;
 			int						i;
 			enum x86_64_reg_class	subclasses[MAX_CLASSES];
 			const int				UNITS_PER_WORD = 8;