[Python] Brainfuck 2 Ook! converter

#!/usr/bin/python
# -*- coding: utf-8 -*-


bfsource = str(raw_input('Brainfuck sourcefile: '))


try:
	file = open(bfsource, 'r')
except:
	print '[!] Error while opening file'

bf = file.read()
file.close()


output = ''
for char in bf:
	if char == '+':
		output += 'Ook. Ook. '
	elif char == '-':
		output += 'Ook! Ook! '
	elif char == '>':
		output += 'Ook. Ook? '
	elif char == '<':
		output += 'Ook? Ook. '
	elif char == '[':
		output += 'Ook! Ook? '
	elif char == ']':
		output += 'Ook? Ook! '
	elif char == '.':
		output += 'Ook! Ook. '
	elif char == ',':
		output += 'Ook. Ook! '
	else:
		continue

file = open('Ook', 'w')
file.write(output)
file.close