The snappy_manifold method of Mcomplex does not work in Python 3

3-manifolds / SnapPy

SnapPy is a package for studying the topology and geometry of 3-manifolds, with a focus on hyperbolic structures. It is based on the SnapPea kernel written by Jeff Weeks.

https://snappy.computop.org/

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The snappy_manifold method of Mcomplex does not work in Python 3 #7

Closed MarkCBell closed 4 years ago

MarkCBell commented 4 years ago

In Python 3, running

>>> from snappy.snap.t3mlite import Mcomplex
>>> Mcomplex('4_1').snappy_manifold()

results in

ModuleNotFoundError: No module named 'StringIO'

due to an import StringIO in snap/t3mlite/mcomplex.py which does not work in Python 3 as this module was renamed to io. This was tested in Python 3.7.0 with SnapPy 2.7

NathanDunfield commented 4 years ago

Closed in f610f5b7e17d7c5b6a7847682229c97c7fa18afc. Thanks for the report!