semopy currently relies on the legacy scipy.stats.mvn module, and more specifically on the mvnum attribute (i.e., scipy.stats.mvn.mvnum).
In recent versions of SciPy, scipy.stats.mvn.mvnum has been removed, which breaks semopy unless SciPy is pinned to an older version.
As a consequence:
semopy depends on scipy.stats.mvn.mvnum, which is no longer available in recent SciPy releases.- This effectively forces users to pin SciPy to ≤ 1.13.1 to keep
semopy working.
- However, SciPy 1.13.1 cannot be installed on Python 3.13 or later, so Python ≥ 3.13 becomes incompatible with the current
semopy dependency chain.
Additionally, based on the upstream issue tracker below, there does not appear to be active progress toward an official fix in semopy at this time:
https://gitlab.com/georgy.m/semopy/-/issues?show=eyJpaWQiOiI0NCIsImZ1bGxfcGF0aCI6Imdlb3JneS5tL3NlbW9weSIsImlkIjoxNzc5NjU2MzZ9
Therefore, official support for Python 3.13 and later in lingam is currently blocked and depends on upstream changes in semopy.
Workaround:
If users need Python 3.13 support today, they can install the forked version of semopy referenced in the URL above and then install the latest SciPy.
semopycurrently relies on the legacyscipy.stats.mvnmodule, and more specifically on themvnumattribute (i.e.,scipy.stats.mvn.mvnum).In recent versions of SciPy,
scipy.stats.mvn.mvnumhas been removed, which breakssemopyunless SciPy is pinned to an older version.As a consequence:
semopydepends onscipy.stats.mvn.mvnum, which is no longer available in recent SciPy releases.semopyworking.semopydependency chain.Additionally, based on the upstream issue tracker below, there does not appear to be active progress toward an official fix in
semopyat this time:https://gitlab.com/georgy.m/semopy/-/issues?show=eyJpaWQiOiI0NCIsImZ1bGxfcGF0aCI6Imdlb3JneS5tL3NlbW9weSIsImlkIjoxNzc5NjU2MzZ9
Therefore, official support for Python 3.13 and later in
lingamis currently blocked and depends on upstream changes insemopy.Workaround:
If users need Python 3.13 support today, they can install the forked version of
semopyreferenced in the URL above and then install the latest SciPy.