min-state

Use rpsrunner.py to play unranked matches on your computer.

Source code:

import random

kon={'RR':'1','RP':'2','RS':'3','PR':'4','PP':'5','PS':'6','SR':'7','SP':'8','SS':'9'}
d0s={'1':0,'2':0,'3':0,'4':1,'5':1,'6':1,'7':2,'8':2,'9':2}
d1s={'1':0,'2':1,'3':2,'4':0,'5':1,'6':2,'7':0,'8':1,'9':2}
k2i={'R':0,'P':1,'S':2}
i2k={0:'R',1:'P',2:'S'}

def mdl(N):
    N%=3
    if N<0:
       N+=3
    return N

if not input:
   DNA=""
   flag=False
   subs=[0]*6
   skor=[0]*6
   output=random.choice("RPS")
else:
   if flag:
      for i in range(6):
          skor[i]*=0.9
          j=mdl(subs[i]-k2i[input])
          if j==1:
             skor[i]+=j
          else:
             skor[i]-=1
   DNA+=kon[input+output]
   i=min(11,len(DNA))
   j=-1
   while i>1 and j<0:
         i-=1
         RNA=DNA[-i:]
         j=DNA.rfind(RNA,0,-1)
   flag=(j>=0)
   output=random.choice("RPS")
   if flag:
      for k in range(3):
          subs[k]=mdl(d0s[DNA[i+j]]-k+1)
          subs[k+3]=mdl(d1s[DNA[i+j]]-k-1)
      output=i2k[subs[skor.index(max(skor))]]