we don't need contextlib here

bob.py

@@ -2,7 +2,6 @@ import argparse
 import socket
 from otp import bob
 from net import send, send_point, recv, recv_point
-import contextlib
 import sys
 
 def main():
@@ -15,7 +14,6 @@ def main():
 
     with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as alice:
         alice.connect((args.ip, args.port))
-        with contextlib.suppress(StopIteration):
         b = bob(args.c > 0)
         b.send(None)
         send_point(alice, b.send(recv_point(alice)))