• There are 77 files with units, with 19,197 lines of code.
• 3 very complex files (McCabe index sum 251+; 5,963 lines of code)
• 2 complex files (McCabe index sum 126-250; 1,723 lines of code)
• 11 medium complex files (McCabe index sum 51-125; 4,651 lines of code)
• 14 slightly complex files (McCabe index sum 26-50; 3,586 lines of code)
• 47 simple files (McCabe index sum 1-25; 3,274 lines of code)
• 47 main files have no units (e.g. languages without unit analysis, or files without functions) and are not classified.

The McCabe index of a file grows with its size: per 100 lines tells a large but plain file from a dense one, and most complex unit whether the complexity sits in one unit or is spread over many.

File	# lines	# units	McCabe index (sum)	per 100 lines	most complex unit
core.py in redis/commands	3073	347	391	13	5
cluster.py in redis	1678	118	344	21	24
connection.py in redis	1212	109	316	26	37
client.py in redis	1047	92	250	24	22
helpers.py in redis/_parsers	676	51	215	32	21
connection.py in redis/asyncio	969	47	109	11	18
commands.py in redis/commands/search	580	44	74	13	9
cache.py in redis	314	52	68	22	6
sentinel.py in redis	269	26	66	25	7
cluster.py in redis/asyncio	1101	45	63	6	4
ocsp.py in redis	215	13	58	27	14
basic_operations.py in benchmarks	148	12	58	39	6
querystring.py in redis/commands/search	145	36	57	39	7
query.py in redis/commands/search	217	30	54	25	21
commands.py in redis/commands/timeseries	483	37	52	11	3
commands.py in redis/commands/bf	210	49	52	25	3
aggregation.py in redis/commands/search	170	24	49	29	9
cluster.py in redis/commands	423	44	49	12	4
event.py in redis	255	38	48	19	4
client.py in redis/asyncio	1035	36	46	4	3
utils.py in redis	202	19	44	22	8
resp3.py in redis/_parsers	206	10	41	20	27
hiredis.py in redis/_parsers	173	10	40	23	13
__init__.py in redis/commands/bf	154	16	36	23	3
helpers.py in redis/commands	76	8	34	45	7
lock.py in redis	173	14	32	18	4
token.py in redis/auth	95	24	31	33	3
commands.py in redis/commands/json	219	28	30	14	2
commands.py in redis/_parsers	170	7	30	18	9
token_manager.py in redis/auth	235	24	29	12	3
sentinel.py in redis/asyncio	247	12	23	9	6
socket.py in redis/_parsers	110	10	21	19	5
utils.py in redis/commands/vectorset	52	3	20	38	9
resp2.py in redis/_parsers	92	2	20	22	16
command_packer_benchmark.py in benchmarks	88	6	20	23	7
base.py in redis/_parsers	186	13	19	10	3
index_definition.py in redis/commands/search	58	7	18	31	4
backoff.py in redis	57	17	17	30	1
reducers.py in redis/commands/search	68	12	17	25	6
info.py in redis/commands/bf	97	13	16	16	2
field.py in redis/commands/search	123	9	15	12	5
decoders.py in redis/commands/json	35	4	14	40	5
tasks.py in root	67	9	13	19	3
sentinel.py in redis/commands	31	13	13	42	1
encoders.py in redis/_parsers	36	3	12	33	6
base.py in benchmarks	34	5	12	35	5
utils.py in redis/commands/timeseries	30	5	11	37	3
suggestion.py in redis/commands/search	35	4	11	31	5
commands.py in redis/commands/vectorset	183	11	11	6	1
lock.py in redis/asyncio	163	5	11	7	4

• File complexity is the sum of the McCabe indexes (conditional complexity) of the units (methods, functions...) in a file.
• Files are classified in five categories based on that sum: 1-25 (simple files), 26-50 (slightly complex files), 51-125 (medium complex files), 126-250 (complex files), 251+ (very complex files). The default bands are five times the unit complexity bands, as a file is a group of units.
• Only main code files with units are classified. Files without units (languages without unit analysis, or files without functions) have no complexity to measure and are left out rather than counted as simple.
• A very complex file holds many decisions, which often means it has too many responsibilities: a candidate to split, and a place where changes need more testing.