Binary package “python-cysignals-bare” in ubuntu bionic

interrupt and signal handling for Cython -- Python - bare

 Since Cython optimizes for speed, Cython normally does not check
 for interrupts. The cysignals package provides mechanisms to handle
 interrupts (and other signals and errors) in Cython code.
 This package installs the library for Python 2; this very library
 was not built against the PARI/GP library.