'''
SUMMER OF '69: Return the sum of the numbers in the array, except ignore sections of numbers starting with a 6 and extending to the next 9 (every 6 will be followed by at least one 9). Return 0 for no numbers.
summer_69([1, 3, 5]) --> 9
summer_69([4, 5, 6, 7, 8, 9]) --> 9
summer_69([2, 1, 6, 9, 11]) --> 14
'''

def summer_69(arr):
    	while x==0:
		for i in arr:
			if arr[i]==6:
				sd=i
		    		return x=1
		return sum((arr))

	while z==0:
		for f in arr:
			if arr[sd:sd+1]==9:
				return 

print(summer_69([1, 3, 5]))
print(summer_69([4, 5, 6, 7, 8, 9]))
print(summer_69([2, 1, 6, 9, 11]))
