# \#reproducibility
**URL:** https://brian.discourse.group/tag/reproducibility/36.md
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## [Equation constants that do not change between runs](https://brian.discourse.group/t/equation-constants-that-do-not-change-between-runs/1253)
**Author:** [@bjourne](https://brian.discourse.group/u/bjourne)\
**Replies:** 3\
**Last updated:** [11 July 2024 15:51 UTC](https://brian.discourse.group/t/equation-constants-that-do-not-change-between-runs/1253 "2024-07-11T15:51:20Z")
I accidentally discovered that Brian2 treats eqs = '''dv/dt = (v\_rest - v + i\_exc + i\_inh) / (100\*ms) : volt (unless refractory)''' and tau\_m = 100 \* ms eqs = '''dv/dt = (v\_rest - v + i\_exc + i\_inh) / tau\_m : volt (u…
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## [Reproducibility issue between brian2.5 and 2.7](https://brian.discourse.group/t/reproducibility-issue-between-brian2-5-and-2-7/1240)
**Author:** [@mreynes](https://brian.discourse.group/u/mreynes)\
**Replies:** 3\
**Last updated:** [2 July 2024 14:53 UTC](https://brian.discourse.group/t/reproducibility-issue-between-brian2-5-and-2-7/1240 "2024-07-02T14:53:11Z")
Description of problem I have a model running perfectly fine on brian 2.5 (python 3.8) and I would like it to run on brian & python latests versions. However, the model does not reproduce at all the results from version…
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## [Docker image for Brian 1](https://brian.discourse.group/t/docker-image-for-brian-1/892)
**Author:** [@mstimberg](https://brian.discourse.group/u/mstimberg)\
**Replies:** 5\
**Last updated:** [2 February 2023 12:33 UTC](https://brian.discourse.group/t/docker-image-for-brian-1/892 "2023-02-02T12:33:24Z")
Brian 1 depends on Python 2.x and other outdated dependencies, so running it on modern systems has become difficult. To make it more convenient to reproduce old results obtained with Brian 1, we now provide a Docker imag…