preliminary fixes/removed typos, etc.

bn_sim.py

@@ -1,4 +1,5 @@
 from itertools import product
+from random import random
 
 funcs = [
     lambda x1, x2, x3, x4: not x2,
@@ -14,6 +15,13 @@ sequential_sync_funcs = [
     lambda x1, x2, x3, x4: (not x2) ^ x4,
 ]
 
+probabilistic_funcs = [
+    (1, funcs[0], None),
+    (1, funcs[1], None),
+    (1, funcs[2], None),
+    (0.5, funcs[3], lambda x1, x2, x3, x4: not x3),
+]
+
 
 nodes = []
 
@@ -39,6 +47,17 @@ def sequential_update(order):
         nodes[i] = funcs[i](*nodes)
 
 
+def probabilistic_update():
+    global nodes, probabilistic_funcs
+    funcs = probabilistic_funcs
+    temp = nodes.copy()
+    for i in range(len(funcs)):
+        probability, *nodeFuncs = funcs[i]
+        func = nodeFuncs[0] if probability >= random() else nodeFuncs[1]
+        temp[i] = func(*nodes)
+    nodes = temp
+
+
 def state_to_str():
     return "".join(str(int(i)) for i in nodes)
 
@@ -61,14 +80,16 @@ def get_table():
 
 
 def update():
-    return synchronous_update()
-    return sequential_update([0, 1, 2, 3])
+    # return synchronous_update()
+    # return sequential_update([0, 1, 2, 3])
+    return probabilistic_update()
     # return block_sequential_update(...)
     # return asynchronous_deterministic_update(...)
 
 
 def main():
     get_table()
+    # simulate([0,0,0,0])
 
 
 if __name__ == "__main__":