masalt0

file=open(input('.bird: ')+'.bird','r').readlines();import time;import os;cls=lambda:os.system('cls'if os.name in ('nt','dos')else'clear')
row=0
column=0
loopstartrow=0
loopstartcolumn=0
pointer=''
oldpointer='>'
datatype='lit'
stroutput=''
intoutput=''

masalt0

import time;import os;cls=lambda:os.system('cls'if os.name in ('nt','dos')else'clear');file='';file=input('filename (no extension): ')+'.a-b';file=open(file,"r");file=file.readlines();cls();current=file[0];print(current);time.sleep(.5);inp=''
while not current==file[21]:
  words=[file[1],file[3],file[5],file[7],file[9],file[11],file[13],file[15],file[17],file[19]];numbers=[file[2],file[4],file[6],file[8],file[10], file[12],file[14],file[16],file[18],file[20]];next=current.replace(words[0],numbers[0]).replace(words[1],numbers[1]).replace(words[2],numbers[2]).replace(words[3],numbers[3]).replace(words[4],numbers[4]).replace(words[5],numbers[5]).replace(words[6],numbers[6]).replace(words[7],numbers[7]).replace(words[8],numbers[8]).replace(words[9],numbers[9])
  if '?' in next:inp=input();next=next.replace('?',inp);current=next;print()
  else:current=next;print(current);time.sleep(.5)
print(file[22]*10)

fish.py

#!/usr/local/bin/python3.2

"""

Python interpreter for the esoteric language ><> (pronounced /ˈfɪʃ/).
Usage: ./fish.py --help

More information: http://esolangs.org/wiki/Fish

Requires python 2.7/3.2 or higher.