Version compatibility

SimPEG follows the time-window based policy for support of Python and Numpy versions introduced in NEP29. In summary, SimPEG supports:

• all minor versions of Python released in the prior 42 months before a SimPEG release, and

• all minor versions of Numpy released in the prior 24 months before a SimPEG release.

We follow these guidelines conservatively, meaning that we might not drop support for older versions of our dependencies if they are not causing any issue. We include notes in the Release Notes every time we drop support for a Python or Numpy version.

Supported Python versions

If you require support for older Python versions, please pin SimPEG to the following releases to ensure compatibility:

Python version	Last compatible release
3.8	0.22.2
3.9	0.22.2
3.10	0.24.0