3-manifolds / Spherogram

Spherogram is a Python module for dealing with the kind of planar diagrams that arise in 3-dimensional topology, such as link and Heegaard diagrams. It a component of the larger SnapPy project.
https://snappy.math.uic.edu/spherogram.html
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Details in draw and links base #12

Closed fchapoton closed 3 years ago

fchapoton commented 3 years ago

namely autopep8 cleanup, then manual care for remaining flake8 details

There were 2 "copy" methods, so I removed one