in confidence-shared/shared.py [0:0]
def _pack_into(self, size, format, value):
with self._reserve(size):
# XXX TODO: I feel like I should be able to use `struct.pack_into` here but can't figure it out.
for i, byte in enumerate(struct.pack(format, value)):
self.rbuf.data[self.rbuf.len + i] = byte