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Rework CALL_FUNCTION* opcodes
Issue #27213: Rework CALL_FUNCTION* opcodes to produce shorter and more efficient bytecode: * CALL_FUNCTION now only accepts position arguments * CALL_FUNCTION_KW accepts position arguments and keyword arguments, but keys of keyword arguments are packed into a constant tuple. * CALL_FUNCTION_EX is the most generic, it expects a tuple and a dict for positional and keyword arguments. CALL_FUNCTION_VAR and CALL_FUNCTION_VAR_KW opcodes have been removed. 2 tests of test_traceback are currently broken: skip test, the issue #28050 was created to track the issue. Patch by Demur Rumed, design by Serhiy Storchaka, reviewed by Serhiy Storchaka and Victor Stinner.
1 parent e535920 commit f9b760f

12 files changed

Lines changed: 3361 additions & 3467 deletions

File tree

‎Include/opcode.h‎

Lines changed: 1 addition & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -108,9 +108,8 @@ extern "C" {
108108
#define LOAD_DEREF 136
109109
#define STORE_DEREF 137
110110
#define DELETE_DEREF 138
111-
#define CALL_FUNCTION_VAR 140
112111
#define CALL_FUNCTION_KW 141
113-
#define CALL_FUNCTION_VAR_KW 142
112+
#define CALL_FUNCTION_EX 142
114113
#define SETUP_WITH 143
115114
#define EXTENDED_ARG 144
116115
#define LIST_APPEND 145

‎Lib/dis.py‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -314,7 +314,7 @@ def _get_instructions_bytes(code, varnames=None, names=None, constants=None,
314314
argrepr = argval
315315
elif op in hasfree:
316316
argval, argrepr = _get_name_info(arg, cells)
317-
elif op in hasnargs:
317+
elif op in hasnargs: # unused
318318
argrepr = "%d positional, %d keyword pair" % (arg%256, arg//256)
319319
yield Instruction(opname[op], op,
320320
arg, argval, argrepr,

‎Lib/importlib/_bootstrap_external.py‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -236,6 +236,7 @@ def _write_atomic(path, data, mode=0o666):
236236
# Python 3.6b1 3373 (add BUILD_STRING opcode #27078)
237237
# Python 3.6b1 3375 (add SETUP_ANNOTATIONS and STORE_ANNOTATION opcodes
238238
# #27985)
239+
# Python 3.6a1 3376 (simplify CALL_FUNCTIONs & BUILD_MAP_UNPACK_WITH_CALL)
239240
#
240241
# MAGIC must change whenever the bytecode emitted by the compiler may no
241242
# longer be understood by older implementations of the eval loop (usually
@@ -244,7 +245,7 @@ def _write_atomic(path, data, mode=0o666):
244245
# Whenever MAGIC_NUMBER is changed, the ranges in the magic_values array
245246
# in PC/launcher.c must also be updated.
246247

247-
MAGIC_NUMBER = (3375).to_bytes(2, 'little') + b'\r\n'
248+
MAGIC_NUMBER = (3376).to_bytes(2, 'little') + b'\r\n'
248249
_RAW_MAGIC_NUMBER = int.from_bytes(MAGIC_NUMBER, 'little') # For import.c
249250

250251
_PYCACHE = '__pycache__'

‎Lib/opcode.py‎

Lines changed: 4 additions & 9 deletions
Original file line numberDiff line numberDiff line change
@@ -31,7 +31,7 @@
3131
haslocal = []
3232
hascompare = []
3333
hasfree = []
34-
hasnargs = []
34+
hasnargs = [] # unused
3535

3636
opmap = {}
3737
opname = ['<%r>' % (op,) for op in range(256)]
@@ -172,8 +172,7 @@ def jabs_op(name, op):
172172
name_op('STORE_ANNOTATION', 127) # Index in name list
173173

174174
def_op('RAISE_VARARGS', 130) # Number of raise arguments (1, 2, or 3)
175-
def_op('CALL_FUNCTION', 131) # #args + (#kwargs << 8)
176-
hasnargs.append(131)
175+
def_op('CALL_FUNCTION', 131) # #args
177176
def_op('MAKE_FUNCTION', 132) # Flags
178177
def_op('BUILD_SLICE', 133) # Number of items
179178
def_op('LOAD_CLOSURE', 135)
@@ -185,12 +184,8 @@ def jabs_op(name, op):
185184
def_op('DELETE_DEREF', 138)
186185
hasfree.append(138)
187186

188-
def_op('CALL_FUNCTION_VAR', 140) # #args + (#kwargs << 8)
189-
hasnargs.append(140)
190-
def_op('CALL_FUNCTION_KW', 141) # #args + (#kwargs << 8)
191-
hasnargs.append(141)
192-
def_op('CALL_FUNCTION_VAR_KW', 142) # #args + (#kwargs << 8)
193-
hasnargs.append(142)
187+
def_op('CALL_FUNCTION_KW', 141) # #args + #kwargs
188+
def_op('CALL_FUNCTION_EX', 142) # Flags
194189

195190
jrel_op('SETUP_WITH', 143)
196191

‎Lib/test/test_dis.py‎

Lines changed: 18 additions & 18 deletions
Original file line numberDiff line numberDiff line change
@@ -96,7 +96,7 @@ def _f(a):
9696
dis_f = """\
9797
%3d 0 LOAD_GLOBAL 0 (print)
9898
2 LOAD_FAST 0 (a)
99-
4 CALL_FUNCTION 1 (1 positional, 0 keyword pair)
99+
4 CALL_FUNCTION 1
100100
6 POP_TOP
101101
102102
%3d 8 LOAD_CONST 1 (1)
@@ -108,7 +108,7 @@ def _f(a):
108108
dis_f_co_code = """\
109109
0 LOAD_GLOBAL 0 (0)
110110
2 LOAD_FAST 0 (0)
111-
4 CALL_FUNCTION 1 (1 positional, 0 keyword pair)
111+
4 CALL_FUNCTION 1
112112
6 POP_TOP
113113
8 LOAD_CONST 1 (1)
114114
10 RETURN_VALUE
@@ -126,7 +126,7 @@ def bug708901():
126126
4 LOAD_CONST 1 (1)
127127
128128
%3d 6 LOAD_CONST 2 (10)
129-
8 CALL_FUNCTION 2 (2 positional, 0 keyword pair)
129+
8 CALL_FUNCTION 2
130130
10 GET_ITER
131131
>> 12 FOR_ITER 4 (to 18)
132132
14 STORE_FAST 0 (res)
@@ -154,11 +154,11 @@ def bug1333982(x=[]):
154154
10 MAKE_FUNCTION 0
155155
12 LOAD_FAST 0 (x)
156156
14 GET_ITER
157-
16 CALL_FUNCTION 1 (1 positional, 0 keyword pair)
157+
16 CALL_FUNCTION 1
158158
159159
%3d 18 LOAD_CONST 4 (1)
160160
20 BINARY_ADD
161-
22 CALL_FUNCTION 1 (1 positional, 0 keyword pair)
161+
22 CALL_FUNCTION 1
162162
24 RAISE_VARARGS 1
163163
164164
%3d >> 26 LOAD_CONST 0 (None)
@@ -224,14 +224,14 @@ def bug1333982(x=[]):
224224
225225
3 10 LOAD_NAME 2 (fun)
226226
12 LOAD_CONST 0 (1)
227-
14 CALL_FUNCTION 1 (1 positional, 0 keyword pair)
227+
14 CALL_FUNCTION 1
228228
16 STORE_ANNOTATION 3 (y)
229229
230230
4 18 LOAD_CONST 0 (1)
231231
20 LOAD_NAME 4 (lst)
232232
22 LOAD_NAME 2 (fun)
233233
24 LOAD_CONST 1 (0)
234-
26 CALL_FUNCTION 1 (1 positional, 0 keyword pair)
234+
26 CALL_FUNCTION 1
235235
28 STORE_SUBSCR
236236
30 LOAD_NAME 1 (int)
237237
32 POP_TOP
@@ -698,7 +698,7 @@ def jumpy():
698698
Instruction(opname='BUILD_LIST', opcode=103, arg=0, argval=0, argrepr='', offset=26, starts_line=None, is_jump_target=False),
699699
Instruction(opname='BUILD_MAP', opcode=105, arg=0, argval=0, argrepr='', offset=28, starts_line=None, is_jump_target=False),
700700
Instruction(opname='LOAD_CONST', opcode=100, arg=7, argval='Hello world!', argrepr="'Hello world!'", offset=30, starts_line=None, is_jump_target=False),
701-
Instruction(opname='CALL_FUNCTION', opcode=131, arg=7, argval=7, argrepr='7 positional, 0 keyword pair', offset=32, starts_line=None, is_jump_target=False),
701+
Instruction(opname='CALL_FUNCTION', opcode=131, arg=7, argval=7, argrepr='', offset=32, starts_line=None, is_jump_target=False),
702702
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=34, starts_line=None, is_jump_target=False),
703703
Instruction(opname='LOAD_FAST', opcode=124, arg=2, argval='f', argrepr='f', offset=36, starts_line=8, is_jump_target=False),
704704
Instruction(opname='RETURN_VALUE', opcode=83, arg=None, argval=None, argrepr='', offset=38, starts_line=None, is_jump_target=False),
@@ -720,7 +720,7 @@ def jumpy():
720720
Instruction(opname='LOAD_DEREF', opcode=136, arg=3, argval='b', argrepr='b', offset=24, starts_line=None, is_jump_target=False),
721721
Instruction(opname='LOAD_DEREF', opcode=136, arg=0, argval='c', argrepr='c', offset=26, starts_line=None, is_jump_target=False),
722722
Instruction(opname='LOAD_DEREF', opcode=136, arg=1, argval='d', argrepr='d', offset=28, starts_line=None, is_jump_target=False),
723-
Instruction(opname='CALL_FUNCTION', opcode=131, arg=4, argval=4, argrepr='4 positional, 0 keyword pair', offset=30, starts_line=None, is_jump_target=False),
723+
Instruction(opname='CALL_FUNCTION', opcode=131, arg=4, argval=4, argrepr='', offset=30, starts_line=None, is_jump_target=False),
724724
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=32, starts_line=None, is_jump_target=False),
725725
Instruction(opname='LOAD_FAST', opcode=124, arg=2, argval='inner', argrepr='inner', offset=34, starts_line=6, is_jump_target=False),
726726
Instruction(opname='RETURN_VALUE', opcode=83, arg=None, argval=None, argrepr='', offset=36, starts_line=None, is_jump_target=False),
@@ -734,7 +734,7 @@ def jumpy():
734734
Instruction(opname='LOAD_DEREF', opcode=136, arg=3, argval='d', argrepr='d', offset=8, starts_line=None, is_jump_target=False),
735735
Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='e', argrepr='e', offset=10, starts_line=None, is_jump_target=False),
736736
Instruction(opname='LOAD_FAST', opcode=124, arg=1, argval='f', argrepr='f', offset=12, starts_line=None, is_jump_target=False),
737-
Instruction(opname='CALL_FUNCTION', opcode=131, arg=6, argval=6, argrepr='6 positional, 0 keyword pair', offset=14, starts_line=None, is_jump_target=False),
737+
Instruction(opname='CALL_FUNCTION', opcode=131, arg=6, argval=6, argrepr='', offset=14, starts_line=None, is_jump_target=False),
738738
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=16, starts_line=None, is_jump_target=False),
739739
Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=18, starts_line=None, is_jump_target=False),
740740
Instruction(opname='RETURN_VALUE', opcode=83, arg=None, argval=None, argrepr='', offset=20, starts_line=None, is_jump_target=False),
@@ -744,13 +744,13 @@ def jumpy():
744744
Instruction(opname='SETUP_LOOP', opcode=120, arg=52, argval=54, argrepr='to 54', offset=0, starts_line=3, is_jump_target=False),
745745
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=0, argval='range', argrepr='range', offset=2, starts_line=None, is_jump_target=False),
746746
Instruction(opname='LOAD_CONST', opcode=100, arg=1, argval=10, argrepr='10', offset=4, starts_line=None, is_jump_target=False),
747-
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=6, starts_line=None, is_jump_target=False),
747+
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='', offset=6, starts_line=None, is_jump_target=False),
748748
Instruction(opname='GET_ITER', opcode=68, arg=None, argval=None, argrepr='', offset=8, starts_line=None, is_jump_target=False),
749749
Instruction(opname='FOR_ITER', opcode=93, arg=32, argval=44, argrepr='to 44', offset=10, starts_line=None, is_jump_target=True),
750750
Instruction(opname='STORE_FAST', opcode=125, arg=0, argval='i', argrepr='i', offset=12, starts_line=None, is_jump_target=False),
751751
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=14, starts_line=4, is_jump_target=False),
752752
Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=16, starts_line=None, is_jump_target=False),
753-
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=18, starts_line=None, is_jump_target=False),
753+
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='', offset=18, starts_line=None, is_jump_target=False),
754754
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=20, starts_line=None, is_jump_target=False),
755755
Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=22, starts_line=5, is_jump_target=False),
756756
Instruction(opname='LOAD_CONST', opcode=100, arg=2, argval=4, argrepr='4', offset=24, starts_line=None, is_jump_target=False),
@@ -766,14 +766,14 @@ def jumpy():
766766
Instruction(opname='POP_BLOCK', opcode=87, arg=None, argval=None, argrepr='', offset=44, starts_line=None, is_jump_target=True),
767767
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=46, starts_line=10, is_jump_target=False),
768768
Instruction(opname='LOAD_CONST', opcode=100, arg=4, argval='I can haz else clause?', argrepr="'I can haz else clause?'", offset=48, starts_line=None, is_jump_target=False),
769-
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=50, starts_line=None, is_jump_target=False),
769+
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='', offset=50, starts_line=None, is_jump_target=False),
770770
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=52, starts_line=None, is_jump_target=False),
771771
Instruction(opname='SETUP_LOOP', opcode=120, arg=52, argval=108, argrepr='to 108', offset=54, starts_line=11, is_jump_target=True),
772772
Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=56, starts_line=None, is_jump_target=True),
773773
Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=98, argval=98, argrepr='', offset=58, starts_line=None, is_jump_target=False),
774774
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=60, starts_line=12, is_jump_target=False),
775775
Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=62, starts_line=None, is_jump_target=False),
776-
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=64, starts_line=None, is_jump_target=False),
776+
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='', offset=64, starts_line=None, is_jump_target=False),
777777
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=66, starts_line=None, is_jump_target=False),
778778
Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=68, starts_line=13, is_jump_target=False),
779779
Instruction(opname='LOAD_CONST', opcode=100, arg=5, argval=1, argrepr='1', offset=70, starts_line=None, is_jump_target=False),
@@ -793,7 +793,7 @@ def jumpy():
793793
Instruction(opname='POP_BLOCK', opcode=87, arg=None, argval=None, argrepr='', offset=98, starts_line=None, is_jump_target=True),
794794
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=100, starts_line=19, is_jump_target=False),
795795
Instruction(opname='LOAD_CONST', opcode=100, arg=6, argval='Who let lolcatz into this test suite?', argrepr="'Who let lolcatz into this test suite?'", offset=102, starts_line=None, is_jump_target=False),
796-
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=104, starts_line=None, is_jump_target=False),
796+
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='', offset=104, starts_line=None, is_jump_target=False),
797797
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=106, starts_line=None, is_jump_target=False),
798798
Instruction(opname='SETUP_FINALLY', opcode=122, arg=70, argval=180, argrepr='to 180', offset=108, starts_line=20, is_jump_target=True),
799799
Instruction(opname='SETUP_EXCEPT', opcode=121, arg=12, argval=124, argrepr='to 124', offset=110, starts_line=None, is_jump_target=False),
@@ -812,7 +812,7 @@ def jumpy():
812812
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=136, starts_line=None, is_jump_target=False),
813813
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=138, starts_line=23, is_jump_target=False),
814814
Instruction(opname='LOAD_CONST', opcode=100, arg=8, argval='Here we go, here we go, here we go...', argrepr="'Here we go, here we go, here we go...'", offset=140, starts_line=None, is_jump_target=False),
815-
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=142, starts_line=None, is_jump_target=False),
815+
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='', offset=142, starts_line=None, is_jump_target=False),
816816
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=144, starts_line=None, is_jump_target=False),
817817
Instruction(opname='POP_EXCEPT', opcode=89, arg=None, argval=None, argrepr='', offset=146, starts_line=None, is_jump_target=False),
818818
Instruction(opname='JUMP_FORWARD', opcode=110, arg=26, argval=176, argrepr='to 176', offset=148, starts_line=None, is_jump_target=False),
@@ -822,7 +822,7 @@ def jumpy():
822822
Instruction(opname='STORE_FAST', opcode=125, arg=1, argval='dodgy', argrepr='dodgy', offset=156, starts_line=None, is_jump_target=False),
823823
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=158, starts_line=26, is_jump_target=False),
824824
Instruction(opname='LOAD_CONST', opcode=100, arg=9, argval='Never reach this', argrepr="'Never reach this'", offset=160, starts_line=None, is_jump_target=False),
825-
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=162, starts_line=None, is_jump_target=False),
825+
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='', offset=162, starts_line=None, is_jump_target=False),
826826
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=164, starts_line=None, is_jump_target=False),
827827
Instruction(opname='POP_BLOCK', opcode=87, arg=None, argval=None, argrepr='', offset=166, starts_line=None, is_jump_target=False),
828828
Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=168, starts_line=None, is_jump_target=False),
@@ -833,7 +833,7 @@ def jumpy():
833833
Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=178, starts_line=None, is_jump_target=False),
834834
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=180, starts_line=28, is_jump_target=True),
835835
Instruction(opname='LOAD_CONST', opcode=100, arg=10, argval="OK, now we're done", argrepr='"OK, now we\'re done"', offset=182, starts_line=None, is_jump_target=False),
836-
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=184, starts_line=None, is_jump_target=False),
836+
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='', offset=184, starts_line=None, is_jump_target=False),
837837
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=186, starts_line=None, is_jump_target=False),
838838
Instruction(opname='END_FINALLY', opcode=88, arg=None, argval=None, argrepr='', offset=188, starts_line=None, is_jump_target=False),
839839
Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=190, starts_line=None, is_jump_target=False),

‎Lib/test/test_extcall.py‎

Lines changed: 8 additions & 10 deletions
Original file line numberDiff line numberDiff line change
@@ -118,7 +118,7 @@
118118
>>> g(*Nothing())
119119
Traceback (most recent call last):
120120
...
121-
TypeError: g() argument after * must be an iterable, not Nothing
121+
TypeError: 'Nothing' object is not iterable
122122
123123
>>> class Nothing:
124124
... def __len__(self): return 5
@@ -127,7 +127,7 @@
127127
>>> g(*Nothing())
128128
Traceback (most recent call last):
129129
...
130-
TypeError: g() argument after * must be an iterable, not Nothing
130+
TypeError: 'Nothing' object is not iterable
131131
132132
>>> class Nothing():
133133
... def __len__(self): return 5
@@ -231,34 +231,32 @@
231231
>>> h(*h)
232232
Traceback (most recent call last):
233233
...
234-
TypeError: h() argument after * must be an iterable, not function
234+
TypeError: 'function' object is not iterable
235235
236236
>>> dir(*h)
237237
Traceback (most recent call last):
238238
...
239-
TypeError: dir() argument after * must be an iterable, not function
239+
TypeError: 'function' object is not iterable
240240
241241
>>> None(*h)
242242
Traceback (most recent call last):
243243
...
244-
TypeError: NoneType object argument after * must be an iterable, \
245-
not function
244+
TypeError: 'function' object is not iterable
246245
247246
>>> h(**h)
248247
Traceback (most recent call last):
249248
...
250-
TypeError: h() argument after ** must be a mapping, not function
249+
TypeError: 'function' object is not a mapping
251250
252251
>>> dir(**h)
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Traceback (most recent call last):
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...
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TypeError: dir() argument after ** must be a mapping, not function
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TypeError: 'function' object is not a mapping
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>>> None(**h)
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Traceback (most recent call last):
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...
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TypeError: NoneType object argument after ** must be a mapping, \
261-
not function
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TypeError: 'function' object is not a mapping
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>>> dir(b=1, **{'b': 1})
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Traceback (most recent call last):

‎Lib/test/test_traceback.py‎

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -304,6 +304,7 @@ def prn():
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])
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# issue 26823 - Shrink recursive tracebacks
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@unittest.skipIf(True, "FIXME: test broken, see issue #28050")
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def _check_recursive_traceback_display(self, render_exc):
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# Always show full diffs when this test fails
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# Note that rearranging things may require adjusting

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