60% draft submission

is not really 60% but close. includes the script for simulation.

bn_sim.py

@@ -0,0 +1,75 @@
+from itertools import product
+
+funcs = [
+    lambda x1, x2, x3, x4: not x2,
+    lambda x1, x2, x3, x4: x1,
+    lambda x1, x2, x3, x4: x1 ^ x4,
+    lambda x1, x2, x3, x4: x3,
+]
+
+sequential_sync_funcs = [
+    lambda x1, x2, x3, x4: not x2,
+    lambda x1, x2, x3, x4: not x2,
+    lambda x1, x2, x3, x4: (not x2) ^ x4,
+    lambda x1, x2, x3, x4: (not x2) ^ x4,
+]
+
+
+nodes = []
+
+
+def init(initial_state):
+    global nodes
+    nodes = [bool(i) for i in initial_state]
+    assert len(funcs) == len(nodes)
+
+
+def synchronous_update():
+    global nodes, funcs
+    temp = nodes.copy()
+    for i in range(len(funcs)):
+        temp[i] = funcs[i](*nodes)
+    nodes = temp
+
+
+def sequential_update(order):
+    global nodes, funcs
+    assert len(order) == len(nodes)
+    for i in order:
+        nodes[i] = funcs[i](*nodes)
+
+
+def state_to_str():
+    return "".join(str(int(i)) for i in nodes)
+
+
+def simulate(initial_state):
+    print("press ENTER to simulate one step. press 'q' before ENTER to exit")
+    init(initial_state)
+    state = state_to_str()
+    while input() != "q":
+        update()
+        print(state + " -> " + state_to_str(), end="")
+
+
+def get_table():
+    for i in product((0, 1), repeat=4):
+        init(tuple(i))
+        state = state_to_str()
+        update()
+        print(state + " -> " + state_to_str())
+
+
+def update():
+    return synchronous_update()
+    return sequential_update([0, 1, 2, 3])
+    # return block_sequential_update(...)
+    # return asynchronous_deterministic_update(...)
+
+
+def main():
+    get_table()
+
+
+if __name__ == "__main__":
+    main()