BabyLanguage.py

from random import randint
nest=0
chars="<>+-,.["
def genProgram():
    global chars
    global nest
    output=""
    while randint(0,6) > 0:
        nextc=randint(0,6)
        output+=chars[nextc]
        if nextc == 6:
            nest+=1
            if nest < 20:
                output+=genProgram()
            nest-=1
            output+="]"
    return output
def interpret(bf):
    tape=0
    memory=[0]
    point=0
    while tape<len(bf):
        c=bf[tape]
        if c=="<":
            if point==0:
                memory=[0]+memory
            else:
                point-=1
        if c==">":
            point+=1
            if point==len(memory):
                memory+=[0]
        if c=="+":
            memory[point]+=1
            if memory[point]==256:
                memory[point]=0
        if c=="-":
            memory[point]-=1
            if memory[point]==-1:
                memory[point]=255
        if c==".":
            print(chr(memory[point]), end='')
        if c==",":
            get=input()
            if len(get)==0:
                memory[point]=0
            else:
                memory[point]=ord(get[0])
        if c=="[":
            if memory[point]==0:
                openedCount=0
                while openedCount>=0 or bf[tape]!="]":
                    tape+=1
                    if bf[tape]=="[":
                        openedCount+=1
                    if bf[tape]=="]":
                        openedCount-=1
        elif c=="]":
            if memory[point]!=0:
                openedCount=0
                while openedCount>=0 or bf[tape]!="[":
                    tape-=1
                    if bf[tape]=="]":
                        openedCount+=1
                    if bf[tape]=="[":
                        openedCount-=1
        tape+=1
foo=genProgram()
interpret(foo)