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Allow notary context manger to be reentrant and reused.

Status: Open.

#454 In jupyter/nbformat;

· Carreau opened on Aug 12, 2026

CI broke with 5.11.0 release

Status: Open.

#452 In jupyter/nbformat;

· billti opened on Aug 7, 2026

Consider making metadata.kernelspec.display_name optional

Status: Open.

#448 In jupyter/nbformat;

· ML16516 opened on Aug 6, 2026

Remove/replace codemirror_mode field?

Status: Open.

#435 In jupyter/nbformat;

· krassowski opened on Jul 15, 2026

Add new metadata field for locking a kernel

Status: Open.

#433 In jupyter/nbformat;

· DenisaCG opened on Jul 9, 2026

Try to recover/fallback to an in-memory database if nbsignatures fails

Status: Open.

#428 In jupyter/nbformat;

· krassowski opened on May 11, 2026

test_is_valid_should_not_mutate fails with Python 3.13

Status: Open.

#405 In jupyter/nbformat;

· mcepl opened on Nov 20, 2024

TypeError: list indices must be integers or slices, not str

Status: Open.

#400 In jupyter/nbformat;

· dsm-72 opened on Apr 21, 2024

Papermill Incompatibility with VS Code Generated Notebooks

Status: Open.

#393 In jupyter/nbformat;

· lachjames opened on Feb 16, 2024

Jupyter notebook opening issue form anaconda distributer: ImportError: cannot import name 'encodestring' from 'base64' (/Users/ ... /python3.9/base64.py)

Status: Open.

#392 In jupyter/nbformat;

· Zewdu-Alamineh opened on Feb 15, 2024

Facing test issues on PPC64LE architecture.

Status: Open.

#387 In jupyter/nbformat;

· vinodk99 opened on Nov 10, 2023

Cell "executing" state

Status: Open.

#365 In jupyter/nbformat;

· davidbrochart opened on Jun 15, 2023