try except in while loops

[mepyyeti]

The following code snippet works..

from some_py_file import Thing
#I'm still shaky relying on functools' partial function so for this portion I'm writing out code in 'bulk' style
code = Thing()
some_num = 100
while True:
	question = input('[yes/no]')
	if question =='yes' or 'y':
		try:
			num = float(input('Enter num...'))
			if num ==4 or num == '':
				num = float(some_num /4)
			if num ==5:
				num =float(some_num /5)
			if amount_down == 5:
				num = float(some_num/20)
			num2 = float(input(''))
			print('some_num: ',some_num,'  num: ',num)#just to make sure loop reaches here, with question = 'yes'
			code.func_in_Thing(num, num2)
			break
		except ValueError:
			print('please enter numbers...')
			continue

So the above works...the opposite should also work...but does not.

from some_py_file import Thing
code = Thing()
some_num = 100
while True:
	question = input('[yes/no]')
	if question =='no' or 'n':
		break:#this should kick me out of the while loop ALTOGETHER if question != 'no/n' 
#if question =='foo' it should move the code try/except
#BUT question =='foo' just kicks me out altogether.
	try:
		num = float(input('Enter num...'))
		if num ==4 or num == '':
			num = float(some_num /4)
		if num ==5:
			num =float(some_num /5)
		if amount_down == 5:
			num = float(some_num/20)
		num2 = float(input(''))
		print('some_num: ',some_num,'  num: ',num)
		code.func_in_Thing(num, num2)
		break
	except ValueError:
		print('please enter numbers...')
		continue

The way I understand break it should kick me out of the while ONLY when question == 'no/n'...so why is it the first snippet operates properly and this one breaks regardless of question == 'foo'. if question !='no/n' python SHOULD move down to the try/except code....why doesn't it?