Python How to Check for an item in a Tuple

Python How to Check for an item in a Tuple
Check whether an element exists within a tuple
How to check if a tuple contains an element
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tuple1 = [2,4,5,8,1]
if 8 in tuple1:
print "tuple1 contains 8"
if 3 not in tuple1:
print "tuple1 doesn't contain 3"
if tuple1.__contains__(5):
print "tuple1 contains 5"