Merge pull request carykh#53 from djlf4568/patch-1

Create qftft.py

code/djlf4568/qftft.py

@@ -0,0 +1,31 @@
+# email: [email protected]
+# discord: DJLF#6985
+
+def strategy(history, memory):
+  # "cooperate" = 1, "defect" = 0
+  choice = None
+  if history.shape[1] == 0: # first turn
+    choice = "cooperate"
+  elif history.shape[1] == 1: # second turn
+    if history[1,-1] == 0: # if opp defect last turn
+      choice = "defect"
+    else:
+      choice = "cooperate"
+  elif history.shape[1] >= 4 and history[1,0] == 0 and history[1,1] == 0 and history[1,2] == 0 and history[1,3] == 0:
+    choice = "defect"
+  elif history.shape[1] >= 4 and history[1,0] == 1 and history[1,1] == 1 and history[1,2] == 1 and history[1,3] == 1:
+    choice = "cooperate"
+
+  else: # not first or second turn
+    if history[0,-1] == 0: # if i defect last turn
+      choice = "cooperate"
+    else: # if i cooperate last turn
+      if history[1,-1] == 0: # if opp defect last turn
+        if history[0,-2] == 1: # if i cooperate two turns ago
+          choice = "defect"
+        else: # if i defect two turns ago
+          choice = "defect"
+      else: # if opp cooperate last turn
+        choice = "cooperate"
+
+  return choice, None