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Fix: convert deque to list before tf.transpose in keras.ops.quantile #21784

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hertschuh merged 2 commits intokeras-team:masterfrom
Junead04:fix-quantile-deque-bug
Jan 22, 2026
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Fix: convert deque to list before tf.transpose in keras.ops.quantile #21784
hertschuh merged 2 commits intokeras-team:masterfrom
Junead04:fix-quantile-deque-bug

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@Junead04
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Summary
Fixed a ValueError in keras.ops.quantile when running under TensorFlow graph execution (@tf.function).
The issue was caused by passing a collections.deque object as the perm argument to tf.transpose.

Fix
Fixes #21781
Convert perm to a list before passing it to TensorFlow:
result = tf.transpose(result, perm=list(perm))

Test
Added a regression test verifying correct behavior under tf.function.
CC: @keras-team

deque bug and add regression test
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google-cla bot commented Oct 26, 2025

Thanks for your pull request! It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

View this failed invocation of the CLA check for more information.

For the most up to date status, view the checks section at the bottom of the pull request.

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Summary of Changes

Hello @Junead04, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request resolves a critical bug affecting the keras.ops.quantile function when used within TensorFlow's graph execution mode (@tf.function). The issue stemmed from an incompatibility between tf.transpose and collections.deque objects. The fix ensures proper operation by explicitly converting the permutation argument to a list, and a new test case has been introduced to prevent future regressions.

Highlights

  • Bug Fix: Addresses a ValueError that occurred in keras.ops.quantile when executed within a TensorFlow graph (@tf.function).
  • Root Cause: The error was caused by passing a collections.deque object as the perm argument to tf.transpose, which is not supported in TensorFlow's graph execution mode.
  • Solution: The perm argument is now explicitly converted to a standard Python list before being passed to tf.transpose, resolving the compatibility issue.
  • Testing: A new regression test, test_quantile_graph_mode, has been added to verify the correct behavior of keras.ops.quantile when running under tf.function.
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Code Review

This pull request addresses a ValueError in keras.ops.quantile when used within a @tf.function in TensorFlow. The fix correctly converts a collections.deque object to a list before passing it to tf.transpose, which resolves the graph execution issue. A new regression test is also added to ensure this behavior is correct and prevent future regressions. The changes are accurate and well-tested. The pull request is well-structured and ready to be merged.

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codecov-commenter commented Oct 26, 2025

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.80%. Comparing base (c2bc6cf) to head (95514ee).
⚠️ Report is 144 commits behind head on master.

Additional details and impacted files
@@            Coverage Diff             @@
##           master   #21784      +/-   ##
==========================================
+ Coverage   82.63%   82.80%   +0.16%     
==========================================
  Files         577      592      +15     
  Lines       59316    62289    +2973     
  Branches     9300     9751     +451     
==========================================
+ Hits        49018    51576    +2558     
- Misses       7910     8190     +280     
- Partials     2388     2523     +135     
Flag Coverage Δ
keras 82.62% <ø> (+0.16%) ⬆️
keras-jax 62.42% <ø> (-0.90%) ⬇️
keras-numpy 56.56% <ø> (-1.00%) ⬇️
keras-openvino 37.57% <ø> (+3.28%) ⬆️
keras-tensorflow 63.67% <ø> (-0.45%) ⬇️
keras-torch 62.44% <ø> (-1.19%) ⬇️

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@keerthanakadiri
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Hi @Junead04, Can you please sign the CLA? Thank you!

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@hertschuh hertschuh left a comment

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Thanks for the fix!

import tensorflow as tf
from keras import ops

def test_quantile_graph_mode():
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This test already exists:

def test_quantile_in_tf_function(self):

Can you remove this file and modify the existing test to cover the case that was not working?

@hertschuh
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You'll also need to accept the CLA.

@Junead04
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Okk I will sign into the CLA.This is my first contribution so I don't know about this.Thank you for guiding me @keerthanakadiri @hertschuh

@hertschuh
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Okk I will sign into the CLA.This is my first contribution so I don't know about this.Thank you for guiding me @keerthanakadiri @hertschuh

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In the failing checks below, click on "cla/google", it will take you to a page that explains things and there will be another link to click to accept the CLA.

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This PR is stale because it has been open for 14 days with no activity. It will be closed if no further activity occurs. Thank you.

@github-actions github-actions bot added the stale label Dec 10, 2025
@Junead04
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I sign in CLA sorry for late but when I rescan this PR it is showing error.

@hertschuh
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Can you address the PR comments and run the code formatter? Thanks!

https://github.com/keras-team/keras/blob/master/CONTRIBUTING.md#generating-public-api-and-formatting-the-code

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github-actions bot commented Jan 6, 2026

This PR is stale because it has been open for 14 days with no activity. It will be closed if no further activity occurs. Thank you.

@github-actions github-actions bot added the stale label Jan 6, 2026
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This PR was closed because it has been inactive for 28 days. Please reopen if you'd like to work on this further.

@github-actions github-actions bot closed this Jan 20, 2026
@hertschuh hertschuh reopened this Jan 22, 2026
Remove non-standard test file.
@google-ml-butler google-ml-butler bot added kokoro:force-run ready to pull Ready to be merged into the codebase labels Jan 22, 2026
@hertschuh
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Thanks!

@hertschuh hertschuh merged commit 2ba60cc into keras-team:master Jan 22, 2026
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Bug in keras.ops.quantile when running with tensorflow graph execution (tf.function)

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