VERIFIED

pymodbus-dev__pymodbus-2502

VERIFIED on first verdict

1 attempt, 0 appeals. 1 file, 3 added and 3 removed lines. Tokens: 28,723 tokens. Model cost: $0.009. Sandbox time: 1 min 16 s.

Open receipt

The plan

Repository: pymodbus-dev/pymodbus
Base commit: f5ede3e (image tag)
Issue: Async client functions return `None` on no response. ### Versions - Pymodbus: 3.8.0 ### Description Previously, a timeout during a call to e.g. `client.read_coils` would log an error and return an exception response. As of 3.8.0, this instead returns `None` in the async client, which breaks the normal usage of PyModbus as given in the documentation: ```python

Files to edit

pymodbus/transaction/transaction.py

Approach: Modify the `execute` method to raise ModbusIOException when there's no response after retries, similar to how `sync_execute` behaves.

Attempt 1

VERIFIED

Agent branch

Kind	Command	Duration	Digest
command	`git ls-files -z` exact command git ls-files -z	0.003s	5cfc4ff1
write	`write pymodbus/transaction/transaction.py` exact command /opt/receipts-bece7779acc34834b4c382d7a37a626c/bin/busybox sh -c 'mkdir -p /pymodbus/pymodbus/transaction && cp /opt/receipts-bece7779acc34834b4c382d7a37a626c/incoming/eb7b5c7103bb37cac5f1aebbea22ef975fb10662574fddfd74dfe20face6686e /pymodbus/pymodbus/transaction/transaction.py'	0.004s	6c17dd80
command	`pytest 'test/transaction/test_transaction.py::TestTransaction::test_transaction_execute[4-5098]'` exact command /opt/receipts-5fe0e4f0f70941c9b009199318b8213c/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-5fe0e4f0f70941c9b009199318b8213c/receipts_pytest.py 'test/transaction/test_transaction.py::TestTransaction::test_transaction_execute[4-5098]' --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/agent1-3.xml	2.373s	7719600ea8d1
command	`pytest test/transaction/test_transaction.py` exact command /opt/receipts-a40e29054f3f405d8b12755be6142b09/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-a40e29054f3f405d8b12755be6142b09/receipts_pytest.py test/transaction/test_transaction.py --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/agent1-4.xml	2.478s	7719600ea8d1
diff	`capture patch` exact command compute patch in executor staging agent1-7cf7932d2296458c93402b70f9b06e70: /opt/homebrew/Cellar/git/2.53.0/bin/git -c core.hooksPath=/dev/null -c core.attributesFile=/dev/null -c diff.external= -c core.quotePath=false add -A && /opt/homebrew/Cellar/git/2.53.0/bin/git -c core.hooksPath=/dev/null -c core.attributesFile=/dev/null -c diff.external= -c core.quotePath=false diff --cached --binary --no-ext-diff --no-textconv --no-renames 2f07bb48303fd8fc390cec069de1b9c1ab7de87c	0.061s	7719600ea8d1

Finish summary: Modified TransactionManager.execute() in pymodbus/transaction/transaction.py to raise ModbusIOException on timeout instead of returning None, matching behavior of sync_execute().
Worker outcome: finished

Target tests pass: yes
Full suite passes: yes
Files changed: pymodbus/transaction/transaction.py
Ran tests: yes

Witness branch w1

Kind Command Exit Duration Digest

apply

Kind	Command	Exit	Duration	Digest
apply	`apply patch 4e07b32fe706` exact command git update-index -q --refresh; git apply -v --3way --recount --ignore-space-change --whitespace=nowarn /opt/receipts-52a51ae29e9c4b978aaf61f451ffbcc5/incoming/4e07b32fe7068c8a94bbeacd358b9d3f287da6dee8133da6e9e6ac860bbae743.diff	0	0.009s	7719600ea8d1
verification	`pytest (witness) test/transaction/test_transaction.py` exact command /opt/receipts-e5693e07902d49c7a972a42c534832b8/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-e5693e07902d49c7a972a42c534832b8/receipts_pytest.py --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning test/transaction/test_transaction.py -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/w1-2.xml	0	2.461s	7719600ea8d1

apply patch 4e07b32fe706

exact command

git update-index -q --refresh; git apply -v --3way --recount --ignore-space-change --whitespace=nowarn /opt/receipts-52a51ae29e9c4b978aaf61f451ffbcc5/incoming/4e07b32fe7068c8a94bbeacd358b9d3f287da6dee8133da6e9e6ac860bbae743.diff

0.009s

7719600ea8d1

verification

pytest (witness) test/transaction/test_transaction.py

exact command

/opt/receipts-e5693e07902d49c7a972a42c534832b8/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-e5693e07902d49c7a972a42c534832b8/receipts_pytest.py --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning test/transaction/test_transaction.py -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/w1-2.xml

2.461s

7719600ea8d1

Gate predicate checklist

Predicate	Name	Status	Evidence
`R1_fail_to_pass`	Failing specification tests now pass	PASS	target tests passed: test/transaction/test_transaction.py::TestTransaction::test_transaction_execute[4-5098]
`R2_pass_to_pass`	Previously passing tests kept	PASS	25 baseline-passing tests still pass
`R3_no_shrink`	No removed tests or new skips	PASS	all 26 baseline tests collected; skips unchanged (0)
`R4_patch_scope`	Patch scope	PASS	patch touches 1 file(s), all in scope
`R5_provenance`	Witness chain and patch digest	PASS	agent chain dff4621a -> 1a8cfd3c unbroken over 5 receipt(s); witness chain dff4621a -> a07fb2e7 unbroken over 2 receipt(s); applied digest matches
`R6_claim_audit`	Agent claim audit (advisory)	PASS	claimed green; own last run: 26 passed, 0 failed

What it said

Finish summary: Modified TransactionManager.execute() in pymodbus/transaction/transaction.py to raise ModbusIOException on timeout instead of returning None, matching behavior of sync_execute().
Worker outcome: finished

Target tests pass: yes
Full suite passes: yes
Files changed: pymodbus/transaction/transaction.py
Ran tests: yes

What the record shows

honest: claimed green; own last run: 26 passed, 0 failed

SWE-rebench's official grader: resolved

Agrees with the gate

Shipped patch

diff --git a/pymodbus/transaction/transaction.py b/pymodbus/transaction/transaction.pyindex 6bea652b..c09eb935 100644--- a/pymodbus/transaction/transaction.py+++ b/pymodbus/transaction/transaction.py@@ -151,9 +151,9 @@ class TransactionManager(ModbusProtocol):                     f"ERROR: No response received of the last {self.accept_no_response_limit} request, CLOSING CONNECTION."                 )             self.count_no_responses += 1-            Log.error(f"No response received after {self.retries} retries, continue with next request")-            self.response_future = asyncio.Future()-            return None+            txt = f"No response received after {self.retries} retries, continue with next request"+            Log.error(txt)+            raise ModbusIOException(txt)      async def server_execute(self) -> tuple[ModbusPDU, int, Exception]:         """Wait for request.

Model and costs

Model: NVIDIA Nemotron 3 Super thinking off · temperature 1.0 · top_p 0.95
Tokens: 28,723 tokens
Model cost: $0.009
Sandbox time: 1 min 16 s
Sandbox cost: Token Factory reported cost: 0.153 (unit not published)

Full environment disclosure

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The bundle

Recorded JSON and patches. In these copies the local checkout path is removed from file paths, and the home directory is shown as ~.