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Version 2.9.0

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@chaoming0625 chaoming0625 released this 24 Oct 16:20
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V2.9.0
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Release Date: October 25, 2026

Version 2.9.0 brings brainpy.state back into the BrainPy repository. brainpy.state exists to make BrainPy models compatible with the BrainX ecosystem: its models are built on brainstate, carry physical units through brainunit, and train online with braintrace. The state-based models are now BrainPy's own code instead of a re-export of the standalone brainpy_state package, and brainpy no longer depends on brainpy_state.

Breaking Changes

  • brainpy.state now contains only the state-based models: Dynamics, Neuron, Synapse, the LIF / HH / Izhikevich / reduced neuron families, Expon / DualExpon / Alpha / AMPA / GABAa / BioNMDA, SynOut / COBA / CUBA / MgBlock, STP / STD, the projections (AlignPostProj, DeltaProj, CurrentProj, align_pre_projection, align_post_projection, gap junctions), LeakyRateReadout, and the input generators.
  • Every other name previously re-exported from brainpy_state (for example the Network / Builder / Simulator API and its *Proj rules, and the dist, spatial, and network submodules) is no longer available from brainpy.state.

Build and Tooling

  • Drop the brainpy_state dependency and raise the brainevent floor to >=0.2.1.

Documentation

  • Host the brainpy.state tutorials, how-to guides, concept chapters, example gallery, and API reference in the BrainPy documentation (docs/state/, docs/apis/state.rst), and move the example scripts to examples/state/.
  • Document CubaLIF, CobaLIF, FitzHughNagumo, HindmarshRose, and the current-input generators, which were missing from the API reference.
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