def check text stack for in text if or or stack append if or or and no

def check(text):
	stack = []
	for i in text:
		if (i == '(' or i == '[' or i == '{'):
			stack.append(i)
		if ((i == ')' or i == ']' or i == '}' ) and ( not stack or abs(ord(i) - ord(stack.pop())) > 2 ) ):
			return False
	return not stack
text = open('text.txt').read()
print check(text)