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I was too bored to use count():
def lonelyinteger(a):
s = list(set(a))
for number in s:
try:
a.remove(number)
a.remove(number)
except ValueError as V:
return(number)
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Lonely Integer
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I was too bored to use count(): def lonelyinteger(a): s = list(set(a)) for number in s: try: a.remove(number) a.remove(number) except ValueError as V: return(number)