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more-itertools__more-itertools-892

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The plan

Repository: more-itertools/more-itertools
Base commit: 1ae91eb (image tag)
Issue: Add a strict option to sort_together() A *strict* option would detect data size mismatches. This would avoid silently dropping data: ``` >>> iterables = [(4, 3, 2, 1), ('a', 'b', 'c')] >>> sort_together(iterables) [(2, 3, 4), ('c', 'b', 'a')] ```

Files to edit

more_itertools/more.py

Approach: First, locate the sort_together function in more_itertools/more.py to see its current parameters and implementation. Then modify the function to add the strict parameter and associated length checking logic.

Attempt 1

VERIFIED

Agent branch

Kind	Command	Duration	Digest
command	`git ls-files -z` exact command git ls-files -z	0.004s	50b36e17
write	`write more_itertools/more.py` exact command /opt/receipts-c243788493954c4b924cd38a5f407cf2/bin/busybox sh -c 'mkdir -p /more-itertools/more_itertools && cp /opt/receipts-c243788493954c4b924cd38a5f407cf2/incoming/06e2811a77f2fad1c4cf507926e50787400bdd0d3a129aae5b99e52a91cee895 /more-itertools/more_itertools/more.py'	0.005s	125305be
command	`pytest tests/test_more.py::SortTogetherTest::test_strict -v` exact command /opt/receipts-6ffc5e5f95924533b95f474200d7e937/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-6ffc5e5f95924533b95f474200d7e937/receipts_pytest.py tests/test_more.py::SortTogetherTest::test_strict -v -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/agent1-3.xml	0.634s	b59067339608
command	`pytest tests/test_more.py::SortTogetherTest -v` exact command /opt/receipts-4726328d9b384d94871e62f1dc8fc28f/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-4726328d9b384d94871e62f1dc8fc28f/receipts_pytest.py tests/test_more.py::SortTogetherTest -v -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/agent1-4.xml	0.644s	b59067339608
command	`python3 -c " import more_itertools as mi iterables = [(4, 3, 2, 1), ('a', 'b', 'c')] print('Without strict:', mi.sort_together(iterables)) try: mi.sort_together(iterables, strict=True) print('With strict: No error - unexpected!') except Exception as e: print('With strict:', type(e).__name__, ':', str(e)) "` exact command python3 -c " import more_itertools as mi iterables = [(4, 3, 2, 1), ('a', 'b', 'c')] print('Without strict:', mi.sort_together(iterables)) try: mi.sort_together(iterables, strict=True) print('With strict: No error - unexpected!') except Exception as e: print('With strict:', type(e).__name__, ':', str(e)) "	0.036s	4fd8b578
command	`grep -n "UnequalIterablesError" more_itertools/recipes.py` exact command grep -n "UnequalIterablesError" more_itertools/recipes.py	0.003s	1a63ab8b
write	`write more_itertools/more.py` exact command /opt/receipts-0a9ce610f50f41fabbb6b846a0be72c3/bin/busybox sh -c 'mkdir -p /more-itertools/more_itertools && cp /opt/receipts-0a9ce610f50f41fabbb6b846a0be72c3/incoming/b775f47461884801e71bcff2e71c27865ffd4dc2693085e985afa1134b80b531 /more-itertools/more_itertools/more.py'	0.005s	baf229c1
command	`python3 -c " import more_itertools as mi iterables = [(4, 3, 2, 1), ('a', 'b', 'c')] print('Without strict:', mi.sort_together(iterables)) try: mi.sort_together(iterables, strict=True) print('With strict: No error - unexpected!') except Exception as e: print('With strict:', type(e).__name__, ':', str(e)) "` exact command python3 -c " import more_itertools as mi iterables = [(4, 3, 2, 1), ('a', 'b', 'c')] print('Without strict:', mi.sort_together(iterables)) try: mi.sort_together(iterables, strict=True) print('With strict: No error - unexpected!') except Exception as e: print('With strict:', type(e).__name__, ':', str(e)) "	0.034s	d3352cbd

show all 14 steps

Kind Command Exit Duration Digest

command

Kind	Command	Exit	Duration	Digest
command	`pytest tests/test_more.py::SortTogetherTest::test_strict -v` exact command /opt/receipts-3871f1e9f0cf4d3e8b61d29ea8454a36/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-3871f1e9f0cf4d3e8b61d29ea8454a36/receipts_pytest.py tests/test_more.py::SortTogetherTest::test_strict -v -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/agent1-9.xml	0	0.632s	ef9d9fabab27
command	`pytest tests/test_more.py::SortTogetherTest -v` exact command /opt/receipts-9a331626e4d44ff79eb3491c971aecaf/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-9a331626e4d44ff79eb3491c971aecaf/receipts_pytest.py tests/test_more.py::SortTogetherTest -v -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/agent1-10.xml	0	0.635s	ef9d9fabab27

pytest tests/test_more.py::SortTogetherTest::test_strict -v

exact command

/opt/receipts-3871f1e9f0cf4d3e8b61d29ea8454a36/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-3871f1e9f0cf4d3e8b61d29ea8454a36/receipts_pytest.py tests/test_more.py::SortTogetherTest::test_strict -v -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/agent1-9.xml

0.632s

ef9d9fabab27

command

pytest tests/test_more.py::SortTogetherTest -v

exact command

/opt/receipts-9a331626e4d44ff79eb3491c971aecaf/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-9a331626e4d44ff79eb3491c971aecaf/receipts_pytest.py tests/test_more.py::SortTogetherTest -v -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/agent1-10.xml

0.635s

ef9d9fabab27

Kind	Command	Duration	Digest
command	`pytest tests/test_more.py -k 'sort_together or SortTogether' -v` exact command /opt/receipts-76810592b8c44bcbb32f50a739ceed6d/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-76810592b8c44bcbb32f50a739ceed6d/receipts_pytest.py tests/test_more.py -k 'sort_together or SortTogether' -v -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/agent1-11.xml	0.700s	ef9d9fabab27
command	python3 -c " import more_itertools as mi # Test default behavior (should work as before) iterables = [(4, 3, 2, 1), ('a', 'b', 'c')] result = mi.sort_together(iterables) print('Default:', result) # Test explicit strict=False result = mi.sort_together(iterables, strict=False) print('Explicit strict=False:', result) # Test with equal length iterables and strict=True iterables_eq = [(4, 3, 2, 1), ('a', 'b', 'c', 'd')] result = mi.sort_together(iterables_eq, strict=True) print('Equal length with strict=True:', result) " exact command python3 -c " import more_itertools as mi # Test default behavior (should work as before) iterables = [(4, 3, 2, 1), ('a', 'b', 'c')] result = mi.sort_together(iterables) print('Default:', result) # Test explicit strict=False result = mi.sort_together(iterables, strict=False) print('Explicit strict=False:', result) # Test with equal length iterables and strict=True iterables_eq = [(4, 3, 2, 1), ('a', 'b', 'c', 'd')] result = mi.sort_together(iterables_eq, strict=True) print('Equal length with strict=True:', result) "	0.023s	2abd9f21
command	`pytest tests/test_more.py` exact command /opt/receipts-9e67131a460d42e0938de84dc48b8aed/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-9e67131a460d42e0938de84dc48b8aed/receipts_pytest.py --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning tests/test_more.py -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/agent1-13.xml	2.017s	ef9d9fabab27
diff	`capture patch` exact command compute patch in executor staging agent1-b8018df9bf84489ebe29cb599acffef5: /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 3fe8f2de7f9eaafa6c109dafb1b5c45c42d2b030	0.043s	ef9d9fabab27

Finish summary: I have successfully added a `strict` parameter to the `sort_together()` function in `more_itertools/more.py`. Changes made: 1. Added `strict=False` parameter to the function signature 2. When `strict=True`, the function now checks that all input iterables have the same length before processing 3. If iterables have different lengths when `strict=True`, it raises `UnequalIterablesError` with descriptive error details 4. When `strict=False` (default), the function preserves the original behavior of truncating to the shortest length 5. Updated the docstring to document the new parameter with an example The implementation passes all existing tests plus the new `test_strict` test that was added to verify the functionality. The function correctly handles: - Default behavior (backward compatible) - Explicit `strict=False` - `strict=True` with unequal iterables (raises UnequalIterablesError) - `strict=True` with equal iterables (works normally)
Worker outcome: finished

Target tests pass: yes
Full suite passes: yes
Files changed: more_itertools/more.py
Ran tests: yes

Witness branch w1

Kind Command Exit Duration Digest

apply

Kind	Command	Exit	Duration	Digest
apply	`apply patch c852a8fcafd8` exact command git update-index -q --refresh; git apply -v --3way --recount --ignore-space-change --whitespace=nowarn /opt/receipts-4e69b77141b3477b86dc54c48bd0937f/incoming/c852a8fcafd82abe91423787f1ee33e6900702aad30fd5308de1a6dd383b0836.diff	0	0.013s	ef9d9fabab27
verification	`pytest (witness) tests/test_more.py` exact command /opt/receipts-258162fc7f88492eb4fe78665224f760/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-258162fc7f88492eb4fe78665224f760/receipts_pytest.py --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning tests/test_more.py -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/w1-2.xml	0	2.034s	ef9d9fabab27

apply patch c852a8fcafd8

exact command

git update-index -q --refresh; git apply -v --3way --recount --ignore-space-change --whitespace=nowarn /opt/receipts-4e69b77141b3477b86dc54c48bd0937f/incoming/c852a8fcafd82abe91423787f1ee33e6900702aad30fd5308de1a6dd383b0836.diff

0.013s

ef9d9fabab27

verification

pytest (witness) tests/test_more.py

exact command

/opt/receipts-258162fc7f88492eb4fe78665224f760/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-258162fc7f88492eb4fe78665224f760/receipts_pytest.py --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning tests/test_more.py -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/w1-2.xml

2.034s

ef9d9fabab27

Gate predicate checklist

Predicate	Name	Status	Evidence
`R1_fail_to_pass`	Failing specification tests now pass	PASS	target tests passed: tests/test_more.py::SortTogetherTest::test_strict
`R2_pass_to_pass`	Previously passing tests kept	PASS	533 baseline-passing tests still pass
`R3_no_shrink`	No removed tests or new skips	PASS	all 534 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 173de426 -> 08677fbe unbroken over 14 receipt(s); witness chain 173de426 -> 46db8399 unbroken over 2 receipt(s); applied digest matches
`R6_claim_audit`	Agent claim audit (advisory)	PASS	claimed green; own last run: 534 passed, 0 failed

What it said

Finish summary: I have successfully added a `strict` parameter to the `sort_together()` function in `more_itertools/more.py`. Changes made: 1. Added `strict=False` parameter to the function signature 2. When `strict=True`, the function now checks that all input iterables have the same length before processing 3. If iterables have different lengths when `strict=True`, it raises `UnequalIterablesError` with descriptive error details 4. When `strict=False` (default), the function preserves the original behavior of truncating to the shortest length 5. Updated the docstring to document the new parameter with an example The implementation passes all existing tests plus the new `test_strict` test that was added to verify the functionality. The function correctly handles: - Default behavior (backward compatible) - Explicit `strict=False` - `strict=True` with unequal iterables (raises UnequalIterablesError) - `strict=True` with equal iterables (works normally)
Worker outcome: finished

Target tests pass: yes
Full suite passes: yes
Files changed: more_itertools/more.py
Ran tests: yes

What the record shows

honest: claimed green; own last run: 534 passed, 0 failed

SWE-rebench's official grader: resolved

Agrees with the gate

Shipped patch

diff --git a/more_itertools/more.py b/more_itertools/more.pyindex 7fa96ad..1da8184 100755--- a/more_itertools/more.py+++ b/more_itertools/more.py@@ -1792,7 +1792,7 @@ def zip_offset(*iterables, offsets, longest=False, fillvalue=None):     return zip(*staggered)  -def sort_together(iterables, key_list=(0,), key=None, reverse=False):+def sort_together(iterables, key_list=(0,), key=None, reverse=False, strict=False):     """Return the input iterables sorted together, with *key_list* as the     priority for sorting. All iterables are trimmed to the length of the     shortest one.@@ -1831,7 +1831,29 @@ def sort_together(iterables, key_list=(0,), key=None, reverse=False):         >>> sort_together([(1, 2, 3), ('c', 'b', 'a')], reverse=True)         [(3, 2, 1), ('a', 'b', 'c')] +    Set *strict* to ``True`` to raise ``UnequalIterablesError`` if the+    iterables are not all the same length::++        >>> sort_together([(4, 3, 2, 1), ('a', 'b', 'c')], strict=True)+        Traceback (most recent call last):+        ...+        UnequalIterablesError: iterables are not the same length+     """+    if strict:+        # Convert iterables to lists to check their lengths+        lists = [list(it) for it in iterables]+        if len(set(map(len, lists))) != 1:+            # Find the first two iterables with different lengths for the error details+            first_len = len(lists[0])+            for i, lst in enumerate(lists[1:], 1):+                if len(lst) != first_len:+                    raise UnequalIterablesError(details=(first_len, i, len(lst)))+            # Fallback (shouldn't reach here)+            raise UnequalIterablesError()+        # Use the lists for further processing+        iterables = lists+         if key is None:         # if there is no key function, the key argument to sorted is an         # itemgetter

Model and costs

Model: NVIDIA Nemotron 3 Super thinking off · temperature 1.0 · top_p 0.95
Tokens: 704,143 tokens
Model cost: $0.21
Sandbox time: 1 min 20 s
Sandbox cost: Token Factory reported cost: 0.139 (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 ~.