/usr/lib/python2.7/dist-packages/cypari2/stack.pxd is in python-cypari2 1.1.4-2.
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 | from .types cimport GEN, pari_sp
from .gen cimport Gen
cdef void clear_stack()
cdef GEN deepcopy_to_python_heap(GEN x, void** address) except NULL
cdef Gen new_gen(GEN x)
cdef Gen new_gen_noclear(GEN x)
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