/usr/lib/python2.7/dist-packages/cysignals/signals.pxi is in python-cysignals-pari 1.3.2+ds-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | #*****************************************************************************
# cysignals is free software: you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cysignals is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with cysignals. If not, see <http://www.gnu.org/licenses/>.
#
#*****************************************************************************
from cysignals.signals cimport *
cdef extern from 'pxi.h':
int import_cysignals__signals() except -1
# This *must* be done for every module using interrupt functions
# otherwise you will get segmentation faults.
import_cysignals__signals()
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