Ribosome

This program has been disqualified.

Source code:

#Ribosome
#This organelle reads some RNA and outputs a protein!
import random
if not input:
	peptide=""
	RNA_strand=""
	output=random.choice(['R','P','S'])
	amino_acids={
	'RP': 'R',
	'PS': 'I',
	'SR': 'B',
	'PR': 'O',
	'SP': 'S',
	'RS': '0',
	'RR': 'M',
	'PP': 'E',
	'SS': ' '}
	length=0
else:
	j=100
	RNA_strand+=input
	peptide+=amino_acids[input+output]
	length+=1
	fail=0
	protein=[0,0,0]
	if j>=length:
		j=length-1
	while peptide.count(peptide[length-j-1:length-1])<5:
		j-=1
		if j<1:
			fail=1
			break
	if fail:
		output=random.choice(['R','P','S'])
	else:
		tryptophan=length-2
		for i in range(peptide.count(peptide[length-j:length-1])):
			tryptophan = peptide.rfind(peptide[length-j:length-1],0,tryptophan)
			if j+tryptophan<length and not tryptophan == -1:
				protein[0]+={'R':0.1,'P':0,'S':-0.1}[RNA_strand[tryptophan+j]]
				protein[1]+={'R':-0.1,'P':0.1,'S':0}[RNA_strand[tryptophan+j]]
				protein[2]+={'R':0,'P':-0.1,'S':0.1}[RNA_strand[tryptophan+j]]
		output={0:'P',1:'S',2:'R'}[protein.index(max(protein))]